Il semble se développer une intense discussion sur la nature de KT Eri
- Interprétation comme nova classique type He/N
- Nova naine de type UGWZ puis outburst d'une étoile symbiotique (Arne
Henden)
- Détection d'une forte variabilité (Delta mag = 1,8) de l'étoile de mag
15 détectée sur images pré-outburst (CSS) avec
une période de 210 jours et suggestion qu'il pourrait s'agir d'une nova
récurrente avec un spectre en outburst similaire à celui de CI Aql (voir
ATEL 2331)
= nova hybride, FeII dans les premiers temps évoluant vers un type
- ce qui rejoindrait la suggestion de M. Della Valle (nova FeII broad,
rapide, semblable à V382 Vel)

Ce qui est certain comme le dit Arne Henden, c'est qu'il s'agit d'un
objet intéressant à suivre, d'autant plus qu'il est idéalement placé
pour les mois suivants (si la métro nous est clémente)

Ce qui est dommage c'est que cet objet qui a atteint mag 5,6 vers le 15
novembre n'ait pas été détecté plus tôt, cela semble incroyable.

J'ai essayé de reprendre les diverses infos sur
http://www.astronomie-amateur.fr/Projets%20Spectro4B%20Novae.html

François Teyssier




Robin Leadbeater a écrit :
>
> More on this interesting object from the CVNET and AAVSO discussion
> groups.
> Note the reference to symbiotic stars Francois ;-)
>
> Robin
>
> ----- Original Message -----
> From: "Arne Henden" <arne@... <mailto:arne%40aavso.org>>
> To: <cvnet-discussion@yahoogroups.com
> <mailto:cvnet-discussion%40yahoogroups.com>>
> Cc: "AAVSO-DIS" <aavso-discussion@...
> <mailto:aavso-discussion%40aavso.org>>
> Sent: Friday, December 04, 2009 11:02 PM
> Subject: Re: [AAVSO-DIS] [cvnet-discussion] Re: ATel #2327:
> Opticalobservations of KT Eri = NovaEridani 2009
>
> Certainly, the astrometry indicated that the nova and the 15th mag star
> were identical within 0.25arcsec or so. What this appears to be is
> something
> like a symbiotic variable - the donor being variable and the white dwarf
> accreting slowly via wind. It is unfortunate that CRTS is unfiltered, as
> much of the variation could be due to Halpha emission, or variation of
> the white dwarf or the donor, or whatever - we can't untangle thie
> situation.
> As Sebastian mentions, it will be very interesting to see what is left
> after
> the nova fades.
>
> Having the donor being the visible star and the nova being fainter helps
> in the amplitude vs distance question.
>
> The bottom line to me is that this is an interesting source and you should
> keep watching!
> Arne
>
> On Fri, Dec 4, 2009 at 5:34 PM, Sebastián Otero
> <varsao@... <mailto:varsao%40fullzero.com.ar>>
> wrote:
> >>> http://www.astronomerstelegram.org/?read=2327
> <http://www.astronomerstelegram.org/?read=2327>
> >>
> >> So if the 15th mag. star is not the progenitor, we're going to see a
> >> visual
> >> double star as the star gets fainter in the next months.
> >
> >
> > http://www.astronomerstelegram.org/?read=2331
> <http://www.astronomerstelegram.org/?read=2331>
> >
> > It seems we won't be seeing double after all...
> > Thanks John G. for pointing this out.
> >
> > A highly variable progenitor with a 210 d. period suggests an LPV
> and this
> > agrees with progenitor systems with a red giant since they show smaller
> > amplitudes due to the intrinsic luminosity of the red giant.
> >
> > Cheers,
> > Sebastian.
> >
>
>

More on this interesting object from the CVNET and AAVSO discussion groups.
Note the reference to symbiotic stars Francois ;-)

Robin

----- Original Message -----
From: "Arne Henden" <arne@...>
To: <cvnet-discussion@yahoogroups.com>
Cc: "AAVSO-DIS" <aavso-discussion@...>
Sent: Friday, December 04, 2009 11:02 PM
Subject: Re: [AAVSO-DIS] [cvnet-discussion] Re: ATel #2327:
Opticalobservations of KT Eri = NovaEridani 2009



Certainly, the astrometry indicated that the nova and the 15th mag star
were identical within 0.25arcsec or so.  What this appears to be is
something
like a symbiotic variable - the donor being variable and the white dwarf
accreting slowly via wind.  It is unfortunate that CRTS is unfiltered, as
much of the variation could be due to Halpha emission, or variation of
the white dwarf or the donor, or whatever - we can't untangle thie
situation.
As Sebastian mentions, it will be very interesting to see what is left after
the nova fades.

Having the donor being the visible star and the nova being fainter helps
in the amplitude vs distance question.

The bottom line to me is that this is an interesting source and you should
keep watching!
Arne

On Fri, Dec 4, 2009 at 5:34 PM, Sebastián Otero <varsao@...>
wrote:
>>> http://www.astronomerstelegram.org/?read=2327
>>
>> So if the 15th mag. star is not the progenitor, we're going to see a
>> visual
>> double star as the star gets fainter in the next months.
>
>
> http://www.astronomerstelegram.org/?read=2331
>
> It seems we won't be seeing double after all...
> Thanks John G. for pointing this out.
>
> A highly variable progenitor with a 210 d. period suggests an LPV and this
> agrees with progenitor systems with a red giant since they show smaller
> amplitudes due to the intrinsic luminosity of the red giant.
>
> Cheers,
> Sebastian.
>

Récupéré sur VSNET :

"According to IAUC 9098, the GCVS team has assigned the variable star
designation KT Eri to Nova Eri 2009.
Please use "ERIKT" (or "KT Eri") for the report."



Le GVCS a tranché sur la nature de l'outburst (Arne Henden avait, dans un
premier temps, suggéré qu'il pourrait plutôt s'agir du superoutburst d'une nova
naine de type UGWZ)

Si l'un d'entre vous a accès aux circulaires IAUC, merci de nous la communiquer
(le message VSNET ne donne pas le type de nova)

Meilleures salutations



François Teyssier

Hi all,
Is there any new from GCVS about this star? It seems long to emit a
confirmation (or no) of the nature of the outburst.
Cheers
François Teyssier




nytecam a écrit :
>
> Hi - my composite fov + spectrum from early this morning at
>
http://www.cloudynights.com/ubbthreads/attachments/3477134-nerietx091201xxx.jpg
>
<http://www.cloudynights.com/ubbthreads/attachments/3477134-nerietx091201xxx.jpg\
>
> - spectrum looks fairly nova-like to me;-)
>
> Nytecam
>
> --- In staranalyser@yahoogroups.com
> <mailto:staranalyser%40yahoogroups.com>, "Robin Leadbeater"
> <robin@...> wrote:
> >
> > This confirms what I suspected about Eric and Torsen's spectra not
> looking
> > like that of a dwarf nova
> >
> > Robin
> >
> > ----- Original Message -----
> > From: <aavso@...>
> > To: <robin@...>
> > Sent: Sunday, November 29, 2009 3:54 PM
> > Subject: AAVSO Special Notice #183: Update on Nova Eri 2009
> >
> >
> > >
> > >
> > > AAVSO Special Notice #183
> > >
> > > Update on Nova Eri 2009
> > > November 29, 2009
> > >
> > > Contrary to my expectations, this transient object appears to
> > > be a true nova.
> > >
> > > H. Maehara, Kwasan Observatory, Kyoto University, reported in
> > > CBET 2053 that a low-resolution spectrum shows Halpha in emission
> > > with FWHM of 3400km/s. M. Fujii reported on another spectrum
> > > that gives an Halpha FWHM of 3200 km/s, and other emission lines
> > > that suggest He/N nova classification; this classification was
> > > also suggested by Rudy et al., CBET 2055, from NIR spectra.
> > >
> > > In addition, Kasia Malek of the "Pi of the Sky" consortium,
> > > reported in [vsnet-alert 11695,11696] that their system obtained
> > > photometry of the nova from 2009/11/13 through 2009/11/26UT,
> > > with the object reaching a peak Cousins-R magnitude of
> > > Rc=5.60 on 2009/11/14. This gives an outburst amplitude of
> > > about 9 magnitudes, reasonable for a nova.
> > >
> > > Bright Star Monitor photometry on 2009/11/28 gave rough colors
> > > and magnitude of V=8.38, (B-V) = -0.18, (V-Rc) = 0.63,
> > > (Rc-Ic) = 0.028, (V-Ic) = 0.67, showing the influence of
> > > the bright Halpha line. This probably also influences the
> > > Pi-of-the-Sky magnitudes.
> > >
> > > These factors taken together strongly suggest that this is
> > > a classical He/N nova, about two weeks after maximum. Being
> > > bright and in a good observing location for the next few
> > > months, this nova should be followed extensively until the
> > > end of the season. CCD observers should use filters,
> > > preferably V and B; visual observers should be alert for any
> > > flaring activity. As suggested by R. Huziak, many meteor
> > > observers acquiring images of the Leonid meteor shower may
> > > have early photometry, which will be especially valuable if
> > > the images were taken in RAW mode on DSLRs. Since this nova
> > > has a bright progenitor, you may also have images from earlier
> > > periods, and there may be existing published photometry that
> > > can be data-mined.
> > >
> > > Charts with comparison stars can be generated with VSP, and
> > > observations can be submitted with names 000-BJR-847,
> > > VSX J044754.2-101043, or N Eri 2009. We will be updating
> > > the comparison stars to give more accurate photometry and
> > > Rc/Ic bandpasses as soon as the weather improves in the
> > > Southwestern U.S.
> > > Arne
> >
>
>

Indeed,

Arne originally thought it might be a dwarf rather than a classical nova
based on  the early photometric data but the spectrum says otherwise.
Unusual for such a bright nova to be missed for two week prior to discovery.
I saw a report that suggests it might have been as bright as mag 5 at
maximum.

Robin

----- Original Message -----
From: "nytecam" <mgavin@...>
To: <staranalyser@yahoogroups.com>
Sent: Tuesday, December 01, 2009 9:09 AM
Subject: [staranalyser] Re: Fw: AAVSO Special Notice #183: Update on Nova
Eri 2009


>
> Hi - my composite fov + spectrum from early this morning at
>
http://www.cloudynights.com/ubbthreads/attachments/3477134-nerietx091201xxx.jpg
>  - spectrum looks fairly nova-like to me;-)
>
> Nytecam
>
> --- In staranalyser@yahoogroups.com, "Robin Leadbeater" <robin@...> wrote:
>>
>> This confirms what I suspected about  Eric and Torsen's spectra  not
>> looking
>> like that of a dwarf nova
>>
>> Robin
>>
>> ----- Original Message -----
>> From: <aavso@...>
>> To: <robin@...>
>> Sent: Sunday, November 29, 2009 3:54 PM
>> Subject: AAVSO Special Notice #183: Update on Nova Eri 2009
>>
>>
>> >
>> >
>> > AAVSO Special Notice #183
>> >
>> > Update on Nova Eri 2009
>> > November 29, 2009
>> >
>> > Contrary to my expectations, this transient object appears to
>> > be a true nova.
>> >
>> > H. Maehara, Kwasan Observatory, Kyoto University, reported in
>> > CBET 2053 that a low-resolution spectrum shows Halpha in emission
>> > with FWHM of 3400km/s.  M. Fujii reported on another spectrum
>> > that gives an Halpha FWHM of 3200 km/s, and other emission lines
>> > that suggest He/N nova classification; this classification was
>> > also suggested by Rudy et al., CBET 2055, from NIR spectra.
>> >
>> > In addition, Kasia Malek of the "Pi of the Sky" consortium,
>> > reported in [vsnet-alert 11695,11696] that their system obtained
>> > photometry of the nova from 2009/11/13 through 2009/11/26UT,
>> > with the object reaching a peak Cousins-R magnitude of
>> > Rc=5.60 on 2009/11/14.  This gives an outburst amplitude of
>> > about 9 magnitudes, reasonable for a nova.
>> >
>> > Bright Star Monitor photometry on 2009/11/28 gave rough colors
>> > and magnitude of V=8.38, (B-V) = -0.18, (V-Rc) = 0.63,
>> > (Rc-Ic) = 0.028, (V-Ic) = 0.67, showing the influence of
>> > the bright Halpha line.  This probably also influences the
>> > Pi-of-the-Sky magnitudes.
>> >
>> > These factors taken together strongly suggest that this is
>> > a classical He/N nova, about two weeks after maximum.  Being
>> > bright and in a good observing location for the next few
>> > months, this nova should be followed extensively until the
>> > end of the season.  CCD observers should use filters,
>> > preferably V and B; visual observers should be alert for any
>> > flaring activity.  As suggested by R. Huziak, many meteor
>> > observers acquiring images of the Leonid meteor shower may
>> > have early photometry, which will be especially valuable if
>> > the images were taken in RAW mode on DSLRs.  Since this nova
>> > has a bright progenitor, you may also have images from earlier
>> > periods, and there may be existing published photometry that
>> > can be data-mined.
>> >
>> > Charts with comparison stars can be generated with VSP, and
>> > observations can be submitted with names 000-BJR-847,
>> > VSX J044754.2-101043, or N Eri 2009.  We will be updating
>> > the comparison stars to give more accurate photometry and
>> > Rc/Ic bandpasses as soon as the weather improves in the
>> > Southwestern U.S.
>> > Arne
>>
>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>

Hi - my composite fov + spectrum from early this morning at
http://www.cloudynights.com/ubbthreads/attachments/3477134-nerietx091201xxx.jpg
- spectrum looks fairly nova-like to me;-)

Nytecam

--- In staranalyser@yahoogroups.com, "Robin Leadbeater" <robin@...> wrote:
>
> This confirms what I suspected about  Eric and Torsen's spectra  not looking
> like that of a dwarf nova
>
> Robin
>
> ----- Original Message -----
> From: <aavso@...>
> To: <robin@...>
> Sent: Sunday, November 29, 2009 3:54 PM
> Subject: AAVSO Special Notice #183: Update on Nova Eri 2009
>
>
> >
> >
> > AAVSO Special Notice #183
> >
> > Update on Nova Eri 2009
> > November 29, 2009
> >
> > Contrary to my expectations, this transient object appears to
> > be a true nova.
> >
> > H. Maehara, Kwasan Observatory, Kyoto University, reported in
> > CBET 2053 that a low-resolution spectrum shows Halpha in emission
> > with FWHM of 3400km/s.  M. Fujii reported on another spectrum
> > that gives an Halpha FWHM of 3200 km/s, and other emission lines
> > that suggest He/N nova classification; this classification was
> > also suggested by Rudy et al., CBET 2055, from NIR spectra.
> >
> > In addition, Kasia Malek of the "Pi of the Sky" consortium,
> > reported in [vsnet-alert 11695,11696] that their system obtained
> > photometry of the nova from 2009/11/13 through 2009/11/26UT,
> > with the object reaching a peak Cousins-R magnitude of
> > Rc=5.60 on 2009/11/14.  This gives an outburst amplitude of
> > about 9 magnitudes, reasonable for a nova.
> >
> > Bright Star Monitor photometry on 2009/11/28 gave rough colors
> > and magnitude of V=8.38, (B-V) = -0.18, (V-Rc) = 0.63,
> > (Rc-Ic) = 0.028, (V-Ic) = 0.67, showing the influence of
> > the bright Halpha line.  This probably also influences the
> > Pi-of-the-Sky magnitudes.
> >
> > These factors taken together strongly suggest that this is
> > a classical He/N nova, about two weeks after maximum.  Being
> > bright and in a good observing location for the next few
> > months, this nova should be followed extensively until the
> > end of the season.  CCD observers should use filters,
> > preferably V and B; visual observers should be alert for any
> > flaring activity.  As suggested by R. Huziak, many meteor
> > observers acquiring images of the Leonid meteor shower may
> > have early photometry, which will be especially valuable if
> > the images were taken in RAW mode on DSLRs.  Since this nova
> > has a bright progenitor, you may also have images from earlier
> > periods, and there may be existing published photometry that
> > can be data-mined.
> >
> > Charts with comparison stars can be generated with VSP, and
> > observations can be submitted with names 000-BJR-847,
> > VSX J044754.2-101043, or N Eri 2009.  We will be updating
> > the comparison stars to give more accurate photometry and
> > Rc/Ic bandpasses as soon as the weather improves in the
> > Southwestern U.S.
> > Arne
>

This confirms what I suspected about  Eric and Torsen's spectra  not looking
like that of a dwarf nova

Robin

----- Original Message -----
From: <aavso@...>
To: <robin@...>
Sent: Sunday, November 29, 2009 3:54 PM
Subject: AAVSO Special Notice #183: Update on Nova Eri 2009


>
>
> AAVSO Special Notice #183
>
> Update on Nova Eri 2009
> November 29, 2009
>
> Contrary to my expectations, this transient object appears to
> be a true nova.
>
> H. Maehara, Kwasan Observatory, Kyoto University, reported in
> CBET 2053 that a low-resolution spectrum shows Halpha in emission
> with FWHM of 3400km/s.  M. Fujii reported on another spectrum
> that gives an Halpha FWHM of 3200 km/s, and other emission lines
> that suggest He/N nova classification; this classification was
> also suggested by Rudy et al., CBET 2055, from NIR spectra.
>
> In addition, Kasia Malek of the "Pi of the Sky" consortium,
> reported in [vsnet-alert 11695,11696] that their system obtained
> photometry of the nova from 2009/11/13 through 2009/11/26UT,
> with the object reaching a peak Cousins-R magnitude of
> Rc=5.60 on 2009/11/14.  This gives an outburst amplitude of
> about 9 magnitudes, reasonable for a nova.
>
> Bright Star Monitor photometry on 2009/11/28 gave rough colors
> and magnitude of V=8.38, (B-V) = -0.18, (V-Rc) = 0.63,
> (Rc-Ic) = 0.028, (V-Ic) = 0.67, showing the influence of
> the bright Halpha line.  This probably also influences the
> Pi-of-the-Sky magnitudes.
>
> These factors taken together strongly suggest that this is
> a classical He/N nova, about two weeks after maximum.  Being
> bright and in a good observing location for the next few
> months, this nova should be followed extensively until the
> end of the season.  CCD observers should use filters,
> preferably V and B; visual observers should be alert for any
> flaring activity.  As suggested by R. Huziak, many meteor
> observers acquiring images of the Leonid meteor shower may
> have early photometry, which will be especially valuable if
> the images were taken in RAW mode on DSLRs.  Since this nova
> has a bright progenitor, you may also have images from earlier
> periods, and there may be existing published photometry that
> can be data-mined.
>
> Charts with comparison stars can be generated with VSP, and
> observations can be submitted with names 000-BJR-847,
> VSX J044754.2-101043, or N Eri 2009.  We will be updating
> the comparison stars to give more accurate photometry and
> Rc/Ic bandpasses as soon as the weather improves in the
> Southwestern U.S.
> Arne

Hello,

a link to the line spectrum from last night, with dark- and sky background correction applied:

http://www.aau.telebus.de/Ver_7/user/Torsten_Hansen/Spektren5/VariableEri20091126linienw.jpg

Best regards

Torsten

Hello,

weather was o.k. tonight. Here´s a preliminary result with my Staranalysers setup:

http://www.aau.telebus.de/Ver_7/user/Torsten_Hansen/Spektren5/VariableEri20091126rohw.jpg

Best regards

Torsten Hansen

Hello,

weather was o.k. tonight. Here´s a preliminary result with my Staranalysers setup:

http://www.aau.telebus.de/Ver_7/user/Torsten_Hansen/Spektren5/VariableEri20091126rohw.jpg

Best regards

Torsten Hansen

----- Original Message -----
From: <aavso@...>
To: <robin@...>
Sent: Thursday, November 26, 2009 2:38 PM
Subject: AAVSO Special Notice #182: More on the variable in Eridanus


>
>
> AAVSO Special Notice #182
>
> More on the variable in Eridanus
> November 26, 2009
>
> This new variable object in Eridanus, originally called
> a possible nova in CBET 2050, is most likely
> a WZ Sge variable.  It matches closely the coordinates
> of GSC1.2 05325-01837, listed in that catalog at 14.76mag.
> At the peak outburst magnitude of 7.3, this is about
> 7.5 magnitudes amplitude, within the range of a galactic
> variable and lower than a typical nova.  It appears to
> be fading and is about V=8.5 right now.  However,
> WZ Sge cataclysmic variables have a complex light curve
> and the star may rebrighten.  We are awaiting spectral
> confirmation and possible GCVS naming, and will pass
> on that information as soon as possible.
>
> As mentioned in Special Notice 181, the star has been
> entered as VSX J044754.2-101043 and now has an AUID of
> 000-BJR-847.  You can submit observations to the AAVSO
> with either identifier.  We have a preliminary sequence
> from Mati Morel, and have obtained BVRI imagery using
> the Bright Star Monitor at Astrokolkhoz Observatory
> which we will use to construct a multiwavelength sequence
> tomorrow (it is a national holiday in the U.S. today).
>
> This is a good target for time series photometry, and
> at its current brightness, we highly recommend using
> filters.  Larger telescopes should consider B or even U
> filters.
>
> Arne
>
> ---------------------------------------------------
> SUBMIT OBSERVATIONS TO THE AAVSO
>
> Information on submitting observations to the AAVSO may be found at:
> http://www.aavso.org/observing/submit/
>
> SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
>
> A Special Notice archive is available at the following URL:
> http://www.aavso.org/publications/specialnotice/
>
> Subscribing and Unsubscribing may be done at the following URL:
> http://www.aavso.org/publications/email/
>

A good target  for the Star Analyser at mag 8.1
Another chance to beat the professional observatories to the first spectrum
;-)

Robin

>
>
> AAVSO Special Notice #181
>
> Possible Nova in Eridanus
> November 25, 2009
>
> Central Bureau Electronic Telegram No. 2050 (Daniel W. E. Green, Ed.)
> announces the discovery of a possible nova in Eridanus, as reported by
> Hitoshi Yamaoka, Kyushu University, by K. Itagaki, Yamagata, Japan, at
> magnitude 8.1 on images taken Nov. 25.536 UT. The object was confirmed
> by Itagaki on an image taken on Nov. 25.545.
>
> Coordinates: R.A. = 04:47:54.21  Decl. = -10:10:43.1 (equinox 2000.0)
>
> According to CBET No. 2050, "Itagaki notes that there is a faint (mag
> about
> 15) object near this position on his archival patrol images. Yamaoka
> suggests that it might be the brightening of a 15th-mag blue star that is
> contained in many catalogues (USNO-B1.0 position end figures 54s.19,
> 42".9), noting that the amplitude of seven magnitudes is rather large for
> a
> dwarf nova, but somewhat small for a rapid classical nova.  Yamaoka adds
> that the ASAS-3 system (Pojmanski 2002, Acta. Astron. 52, 397) also
> detected this object at the following V magnitudes:  Nov. 10.236 UT,
> [14.0:; 19.241, 7.34; 22.179, 7.98; 24.269, 8.12."
>
> Finder charts for this object may be plotted using VSP by entering the
> coordinates into the form at the URL
> http://www.aavso.org/observing/charts/vsp/.
>
> This object has been assigned the VSX identifier VSX J044754.2-101043. An
> AUID will be assigned by the VSX moderators and will be added to the
> online
> version of this notice when it becomes available. Please report
> observations to the AAVSO International Database as N ERI 2009 or
> VSX J044754.2-101043.
>
> Congratulations to K. Itagaki on his latest discovery!
>
> Elizabeth O. Waagen, AAVSO
>
>
>
> ---------------------------------------------------
> SUBMIT OBSERVATIONS TO THE AAVSO
>
> Information on submitting observations to the AAVSO may be found at:
> http://www.aavso.org/observing/submit/
>
> SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
>
> A Special Notice archive is available at the following URL:
> http://www.aavso.org/publications/specialnotice/
>
> Subscribing and Unsubscribing may be done at the following URL:
> http://www.aavso.org/publications/email/
>

True - but with the nova's location [for me] low in the SW at dusk I've only a
10min or so window of observation - too brief to change grating/camera
settings;-)

Nytecam

--- In staranalyser@yahoogroups.com, "ssb73q" <ssb73q@...> wrote:
>
> Hi Ken, stars close to the spectrum? Then rotate the grating and camera
assembly. That's one disadvantage that I have with using the Astronomik filter
drawers to hold grating and prism, It's impossible to rotate the assembly
without loosing the 2" coupling.
>
> Regards,
> Richard
>
> --- In staranalyser@yahoogroups.com, Ken Harrison <kenm.harrison@> wrote:
> >
> > Richard,
> > Understood, but the real problem was the background stars sitting in/on the
> > spectrum. A wide slit or aperture mask would suppress them.
> >
> >
> >
> > On 17/11/2009, ssb73q <ssb73q@> wrote:
> > >
> > >
> > >
> > > Hi Ken, for spectra lines in the visible, using a UV/IR cut filter would
> > > eliminate light pollution outside 400-700nm. The Baader UV/IR cut has over
> > > 96% transmission in the 400-700nm range so not much of the useful light is
> > > lost. The other advantage of using a UV/IR cut is that it cures NUV and
NIR
> > > spectrum flare because of less than ideal system optics.
> > >
> > > Regards,
> > > Richard
> > >
> > > --- In staranalyser@yahoogroups.com <staranalyser%40yahoogroups.com>, Ken
> > > Harrison <kenm.harrison@> wrote:
> > > >
> > > > What about a wide slit or aperture mask? This would at least supress the
> > > > background field stars???
> > > >
> > > > On 17/11/2009, nytecam <mgavin@> wrote:
> > > > >
> > > > >
> > > > >
> > > > > Hi François - the spectrum of a nova in a crowded starfield probably
> > > too
> > > > > much for a little 70mm OG but a good field shot last night via same at
> > > > >
> > > > >
> > >
http://www.cloudynights.com/ubbthreads/attachments/3451384-nsctetx091116.jpg
> > > > >
> > > > > Cloud arrived [again!] before I could get the 30cm SCT+grating onto
the
> > > > > nova ;-(
> > > > >
> > > > > Nytecam
> > > > > www.astroman.fsnet.co.uk
> > > > >
> > > > > --- In staranalyser@yahoogroups.com
<staranalyser%40yahoogroups.com><staranalyser%
> > > 40yahoogroups.com>,
> > > > > françois teyssier <francois.teyssier@> wrote:
> > > > > >
> > > > > > Hello!
> > > > > > Nice image with a so little instrument!
> > > > > > I'm glad to see the first picture of the star itself : I've only the
> > > > > > spectra. Soon I'll install a parallel camera to get the field of
view
> > > in
> > > > > > order to get photometry.
> > > > > > Have you tried to get a 2D spectrum?
> > > > > > Best regards
> > > > > > François Teyssier
> > > > > >
> > > > > >
> > > > > > nytecam a écrit :
> > > > > > >
> > > > > > > Congrats Francois - pushed piggybacked ETX70 to limit last night
> > > with
> > > > > > > field spectrum including nova - if partially overlaid by another
> > > > > star;-)
> > > > > > >
> > > > > > >
> > > > >
> > >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> > > > > > > <
> > > > >
> > >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> > > > > >
> > > > > > >
> > > > > > > Nytecam
> > > > > > >
> > > > > > > --- In
staranalyser@yahoogroups.com<staranalyser%40yahoogroups.com><staranalyser%
> > > 40yahoogroups.com>
> > > > > > >
<mailto:staranalyser%40yahoogroups.com<staranalyser%2540yahoogroups.com>
> > > <staranalyser%2540yahoogroups.com>>,
> > > > > "Robin Leadbeater"
> > > > > > > <robin@> wrote:
> > > > > > > >
> > > > > > > > Congratulations François,
> > > > > > > >
> > > > > > > > I do not have access to IAU circulars it but according to the
> > > latest
> > > > > > > AAVSO
> > > > > > > > alert on this object you are named in IAU Circular #9093 as
> > > having
> > > > > > > obtained
> > > > > > > > the earliest spectrum. .
> > > > > > > >
> > > > > > > > It was not taken using a Star Analyer but it could have been.
Has
> > > > > > > anyone
> > > > > > > > else tried ?
> > > > > > > >
> > > > > > > > Robin
> > > > > > > >
> > > > > > > > ----- Original Message -----
> > > > > > > > From: "françois teyssier" <francois.teyssier@>
> > > > > > > > To:
<staranalyser@yahoogroups.com<staranalyser%40yahoogroups.com><staranalyser%
> > > 40yahoogroups.com>
> > > > > > >
<mailto:staranalyser%40yahoogroups.com<staranalyser%2540yahoogroups.com>
> > > <staranalyser%2540yahoogroups.com>
> > > > > >>
> > > > > > > > Sent: Monday, November 09, 2009 6:17 PM
> > > > > > > > Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176:
> > > Possible
> > > > > > > Nova in
> > > > > > > > Scutum
> > > > > > > >
> > > > > > > >
> > > > > > > > >
> > > > > > > > > Spectrum with LHIRES III 150t/mm
> > > > > > > > >
> > > > > > > > >
> > > http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
> > > > > > > <http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html>
> > > > > > > > >
> > > > > > > > > A confirmation...
> > > > > > > > >
> > > > > > > > > Best regards
> > > > > > > > > François Teyssier
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > Robin Leadbeater a écrit :
> > > > > > > > >>
> > > > > > > > >> Note there is still no spectroscopic confirmation.
> > > > > > > > >>
> > > > > > > > >> Robin
> > > > > > > > >>
> > > > > > > > >> ----- Original Message -----
> > > > > > > > >> From: <aavso@ <mailto:aavso%40aavso.org
<aavso%2540aavso.org><aavso%
> > > 2540aavso.org>>>
> > > > > > > > >> To: <robin@
> > > > > > > > >>
<mailto:robin%40leadbeaterhome.fsnet.co.uk<robin%2540leadbeaterhome.fsnet.co.uk>
> > > <robin%2540leadbeaterhome.fsnet.co.uk>
> > > > > >>
> > > > > > > > >> Sent: Monday, November 09, 2009 2:54 PM
> > > > > > > > >> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
> > > > > > > > >>
> > > > > > > > >> >
> > > > > > > > >> >
> > > > > > > > >> > AAVSO Special Notice #176
> > > > > > > > >> >
> > > > > > > > >> > Possible Nova in Scutum
> > > > > > > > >> > November 9, 2009
> > > > > > > > >> >
> > > > > > > > >> > CBET #2008 (D.W.E. Green, editor) announced the discovery
of
> > > a
> > > > > > > possible
> > > > > > > > >> > nova in Scutum on November 8, 2009. The new object was
> > > > > > > discovered by
> > > > > > > > >> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov
8.37
> > > UT
> > > > > (JD
> > > > > > > > >> > 2455143.87) who found the object near magnitude 8 on an
> > > image
> > > > > > > taken
> > > > > > > > >> > with
> > > > > > > > >> > a 120-mm camera lens and DSLR. The new object has since
been
> > > > > > > confirmed
> > > > > > > > >> > by E. Guido and G. Sostero using a Global Rent-a-Scope
> > > > > > > telescope near
> > > > > > > > >> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD
> > > 2455144.58).
> > > > > > > Guido
> > > > > > > > >> > and Sostero report an unfiltered magnitude of 8.5, and
> > > provide
> > > > > the
> > > > > > > > >> > following astrometry of the new object:
> > > > > > > > >> >
> > > > > > > > >> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
> > > > > > > > >> >
> > > > > > > > >> > Guido and Sostero also note that there is no unambiguous
> > > > > progenitor
> > > > > > > > >> > candidate down to a limiting red magnitude of 20 present on
> > > DSS
> > > > > > > images
> > > > > > > > >> > of the field.
> > > > > > > > >> >
> > > > > > > > >> > The object has not yet been confirmed spectroscopically as
a
> > > > > nova,
> > > > > > > > >> > although such a classification is presumed. Pending final
> > > > > > > > >> > classification, please submit all observations of this
> > > object
> > > > > > > to the
> > > > > > > > >> > AAVSO using the VSX designation "VSX J184345.5-073642".
> > > > > > > > >> >
> > > > > > > > >> > An Alert Notice will be issued if the object is confirmed
as
> > > a
> > > > > > > nova.
> > > > > > > > >> >
> > > > > > > > >> > This AAVSO Special Notice was prepared by M. Templeton.
> > > > > > > > >> >
> > > > > > > > >> > ---------------------------------------------------
> > > > > > > > >> > SUBMIT OBSERVATIONS TO THE AAVSO
> > > > > > > > >> >
> > > > > > > > >> > Information on submitting observations to the AAVSO may be
> > > > > > > found at:
> > > > > > > > >> > http://www.aavso.org/observing/submit/
> > > > > > > <http://www.aavso.org/observing/submit/>
> > > > > > > > >> <http://www.aavso.org/observing/submit/
> > > > > > > <http://www.aavso.org/observing/submit/>>
> > > > > > > > >> >
> > > > > > > > >> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
> > > > > > > > >> >
> > > > > > > > >> > A Special Notice archive is available at the following URL:
> > > > > > > > >> > http://www.aavso.org/publications/specialnotice/
> > > > > > > <http://www.aavso.org/publications/specialnotice/>
> > > > > > > > >> <http://www.aavso.org/publications/specialnotice/
> > > > > > > <http://www.aavso.org/publications/specialnotice/>>
> > > > > > > > >> >
> > > > > > > > >> > Subscribing and Unsubscribing may be done at the following
> > > URL:
> > > > > > > > >> > http://www.aavso.org/publications/email/
> > > > > > > <http://www.aavso.org/publications/email/>
> > > > > > > > >> <http://www.aavso.org/publications/email/
> > > > > > > <http://www.aavso.org/publications/email/>>
> > > > > > > > >> >
> > > > > > > > >>
> > > > > > > > >>
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > ------------------------------------
> > > > > > > > >
> > > > > > > > > Yahoo! Groups Links
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > "Very funny Scotty... now beam down our clothes!"
> > > >
> > >
http://tech.groups.yahoo.com/group/astronomical_spectroscopy/?yguid=322612425
> > > >
> > >
> > >
> > >
> >
> >
> >
> > --
> > "Very funny Scotty... now beam down our clothes!"
> >
http://tech.groups.yahoo.com/group/astronomical_spectroscopy/?yguid=322612425
> >
>

Hello list,

at last, a spectrum of the nova with my Staranalysers setup! Namely not my first one, but under reasonable and better conditions (yesterday we had some heavy wind with bad seeing).

So, only a quick result in original size from this evening, without any corrections. Hope to hand in a calibrated profile and some further pics of the surrounding starfield at the weekend:

http://www.aau.telebus.de/Ver_7/user/Torsten_Hansen/Spektren5/NovaV496Scuti20091119rohw.jpg

Best regards

Torsten

Hi Ken, stars close to the spectrum? Then rotate the grating and camera
assembly. That's one disadvantage that I have with using the Astronomik filter
drawers to hold grating and prism, It's impossible to rotate the assembly
without loosing the 2" coupling.

Regards,
Richard

--- In staranalyser@yahoogroups.com, Ken Harrison <kenm.harrison@...> wrote:
>
> Richard,
> Understood, but the real problem was the background stars sitting in/on the
> spectrum. A wide slit or aperture mask would suppress them.
>
>
>
> On 17/11/2009, ssb73q <ssb73q@...> wrote:
> >
> >
> >
> > Hi Ken, for spectra lines in the visible, using a UV/IR cut filter would
> > eliminate light pollution outside 400-700nm. The Baader UV/IR cut has over
> > 96% transmission in the 400-700nm range so not much of the useful light is
> > lost. The other advantage of using a UV/IR cut is that it cures NUV and NIR
> > spectrum flare because of less than ideal system optics.
> >
> > Regards,
> > Richard
> >
> > --- In staranalyser@yahoogroups.com <staranalyser%40yahoogroups.com>, Ken
> > Harrison <kenm.harrison@> wrote:
> > >
> > > What about a wide slit or aperture mask? This would at least supress the
> > > background field stars???
> > >
> > > On 17/11/2009, nytecam <mgavin@> wrote:
> > > >
> > > >
> > > >
> > > > Hi François - the spectrum of a nova in a crowded starfield probably
> > too
> > > > much for a little 70mm OG but a good field shot last night via same at
> > > >
> > > >
> > http://www.cloudynights.com/ubbthreads/attachments/3451384-nsctetx091116.jpg
> > > >
> > > > Cloud arrived [again!] before I could get the 30cm SCT+grating onto the
> > > > nova ;-(
> > > >
> > > > Nytecam
> > > > www.astroman.fsnet.co.uk
> > > >
> > > > --- In staranalyser@yahoogroups.com
<staranalyser%40yahoogroups.com><staranalyser%
> > 40yahoogroups.com>,
> > > > françois teyssier <francois.teyssier@> wrote:
> > > > >
> > > > > Hello!
> > > > > Nice image with a so little instrument!
> > > > > I'm glad to see the first picture of the star itself : I've only the
> > > > > spectra. Soon I'll install a parallel camera to get the field of view
> > in
> > > > > order to get photometry.
> > > > > Have you tried to get a 2D spectrum?
> > > > > Best regards
> > > > > François Teyssier
> > > > >
> > > > >
> > > > > nytecam a écrit :
> > > > > >
> > > > > > Congrats Francois - pushed piggybacked ETX70 to limit last night
> > with
> > > > > > field spectrum including nova - if partially overlaid by another
> > > > star;-)
> > > > > >
> > > > > >
> > > >
> >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> > > > > > <
> > > >
> >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> > > > >
> > > > > >
> > > > > > Nytecam
> > > > > >
> > > > > > --- In
staranalyser@yahoogroups.com<staranalyser%40yahoogroups.com><staranalyser%
> > 40yahoogroups.com>
> > > > > >
<mailto:staranalyser%40yahoogroups.com<staranalyser%2540yahoogroups.com>
> > <staranalyser%2540yahoogroups.com>>,
> > > > "Robin Leadbeater"
> > > > > > <robin@> wrote:
> > > > > > >
> > > > > > > Congratulations François,
> > > > > > >
> > > > > > > I do not have access to IAU circulars it but according to the
> > latest
> > > > > > AAVSO
> > > > > > > alert on this object you are named in IAU Circular #9093 as
> > having
> > > > > > obtained
> > > > > > > the earliest spectrum. .
> > > > > > >
> > > > > > > It was not taken using a Star Analyer but it could have been. Has
> > > > > > anyone
> > > > > > > else tried ?
> > > > > > >
> > > > > > > Robin
> > > > > > >
> > > > > > > ----- Original Message -----
> > > > > > > From: "françois teyssier" <francois.teyssier@>
> > > > > > > To:
<staranalyser@yahoogroups.com<staranalyser%40yahoogroups.com><staranalyser%
> > 40yahoogroups.com>
> > > > > >
<mailto:staranalyser%40yahoogroups.com<staranalyser%2540yahoogroups.com>
> > <staranalyser%2540yahoogroups.com>
> > > > >>
> > > > > > > Sent: Monday, November 09, 2009 6:17 PM
> > > > > > > Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176:
> > Possible
> > > > > > Nova in
> > > > > > > Scutum
> > > > > > >
> > > > > > >
> > > > > > > >
> > > > > > > > Spectrum with LHIRES III 150t/mm
> > > > > > > >
> > > > > > > >
> > http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
> > > > > > <http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html>
> > > > > > > >
> > > > > > > > A confirmation...
> > > > > > > >
> > > > > > > > Best regards
> > > > > > > > François Teyssier
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > Robin Leadbeater a écrit :
> > > > > > > >>
> > > > > > > >> Note there is still no spectroscopic confirmation.
> > > > > > > >>
> > > > > > > >> Robin
> > > > > > > >>
> > > > > > > >> ----- Original Message -----
> > > > > > > >> From: <aavso@ <mailto:aavso%40aavso.org
<aavso%2540aavso.org><aavso%
> > 2540aavso.org>>>
> > > > > > > >> To: <robin@
> > > > > > > >>
<mailto:robin%40leadbeaterhome.fsnet.co.uk<robin%2540leadbeaterhome.fsnet.co.uk>
> > <robin%2540leadbeaterhome.fsnet.co.uk>
> > > > >>
> > > > > > > >> Sent: Monday, November 09, 2009 2:54 PM
> > > > > > > >> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
> > > > > > > >>
> > > > > > > >> >
> > > > > > > >> >
> > > > > > > >> > AAVSO Special Notice #176
> > > > > > > >> >
> > > > > > > >> > Possible Nova in Scutum
> > > > > > > >> > November 9, 2009
> > > > > > > >> >
> > > > > > > >> > CBET #2008 (D.W.E. Green, editor) announced the discovery of
> > a
> > > > > > possible
> > > > > > > >> > nova in Scutum on November 8, 2009. The new object was
> > > > > > discovered by
> > > > > > > >> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37
> > UT
> > > > (JD
> > > > > > > >> > 2455143.87) who found the object near magnitude 8 on an
> > image
> > > > > > taken
> > > > > > > >> > with
> > > > > > > >> > a 120-mm camera lens and DSLR. The new object has since been
> > > > > > confirmed
> > > > > > > >> > by E. Guido and G. Sostero using a Global Rent-a-Scope
> > > > > > telescope near
> > > > > > > >> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD
> > 2455144.58).
> > > > > > Guido
> > > > > > > >> > and Sostero report an unfiltered magnitude of 8.5, and
> > provide
> > > > the
> > > > > > > >> > following astrometry of the new object:
> > > > > > > >> >
> > > > > > > >> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
> > > > > > > >> >
> > > > > > > >> > Guido and Sostero also note that there is no unambiguous
> > > > progenitor
> > > > > > > >> > candidate down to a limiting red magnitude of 20 present on
> > DSS
> > > > > > images
> > > > > > > >> > of the field.
> > > > > > > >> >
> > > > > > > >> > The object has not yet been confirmed spectroscopically as a
> > > > nova,
> > > > > > > >> > although such a classification is presumed. Pending final
> > > > > > > >> > classification, please submit all observations of this
> > object
> > > > > > to the
> > > > > > > >> > AAVSO using the VSX designation "VSX J184345.5-073642".
> > > > > > > >> >
> > > > > > > >> > An Alert Notice will be issued if the object is confirmed as
> > a
> > > > > > nova.
> > > > > > > >> >
> > > > > > > >> > This AAVSO Special Notice was prepared by M. Templeton.
> > > > > > > >> >
> > > > > > > >> > ---------------------------------------------------
> > > > > > > >> > SUBMIT OBSERVATIONS TO THE AAVSO
> > > > > > > >> >
> > > > > > > >> > Information on submitting observations to the AAVSO may be
> > > > > > found at:
> > > > > > > >> > http://www.aavso.org/observing/submit/
> > > > > > <http://www.aavso.org/observing/submit/>
> > > > > > > >> <http://www.aavso.org/observing/submit/
> > > > > > <http://www.aavso.org/observing/submit/>>
> > > > > > > >> >
> > > > > > > >> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
> > > > > > > >> >
> > > > > > > >> > A Special Notice archive is available at the following URL:
> > > > > > > >> > http://www.aavso.org/publications/specialnotice/
> > > > > > <http://www.aavso.org/publications/specialnotice/>
> > > > > > > >> <http://www.aavso.org/publications/specialnotice/
> > > > > > <http://www.aavso.org/publications/specialnotice/>>
> > > > > > > >> >
> > > > > > > >> > Subscribing and Unsubscribing may be done at the following
> > URL:
> > > > > > > >> > http://www.aavso.org/publications/email/
> > > > > > <http://www.aavso.org/publications/email/>
> > > > > > > >> <http://www.aavso.org/publications/email/
> > > > > > <http://www.aavso.org/publications/email/>>
> > > > > > > >> >
> > > > > > > >>
> > > > > > > >>
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > ------------------------------------
> > > > > > > >
> > > > > > > > Yahoo! Groups Links
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > >
> > >
> > >
> > > --
> > > "Very funny Scotty... now beam down our clothes!"
> > >
> >
http://tech.groups.yahoo.com/group/astronomical_spectroscopy/?yguid=322612425
> > >
> >
> >
> >
>
>
>
> --
> "Very funny Scotty... now beam down our clothes!"
> http://tech.groups.yahoo.com/group/astronomical_spectroscopy/?yguid=322612425
>

Hi Ken, for spectra lines in the visible, using a UV/IR cut filter would
eliminate light pollution outside 400-700nm. The Baader UV/IR cut has over 96%
transmission in the 400-700nm range so not much of the useful light is lost. The
other advantage of using a UV/IR cut is that it cures NUV and NIR spectrum flare
because of less than ideal system optics.

Regards,
Richard



--- In staranalyser@yahoogroups.com, Ken Harrison <kenm.harrison@...> wrote:
>
> What about a wide slit or aperture mask? This would at least supress the
> background field stars???
>
> On 17/11/2009, nytecam <mgavin@...> wrote:
> >
> >
> >
> > Hi François - the spectrum of a nova in a crowded starfield probably too
> > much for a little 70mm OG but a good field shot last night via same at
> >
> > http://www.cloudynights.com/ubbthreads/attachments/3451384-nsctetx091116.jpg
> >
> > Cloud arrived [again!] before I could get the 30cm SCT+grating onto the
> > nova ;-(
> >
> > Nytecam
> > www.astroman.fsnet.co.uk
> >
> > --- In staranalyser@yahoogroups.com <staranalyser%40yahoogroups.com>,
> > françois teyssier <francois.teyssier@> wrote:
> > >
> > > Hello!
> > > Nice image with a so little instrument!
> > > I'm glad to see the first picture of the star itself : I've only the
> > > spectra. Soon I'll install a parallel camera to get the field of view in
> > > order to get photometry.
> > > Have you tried to get a 2D spectrum?
> > > Best regards
> > > François Teyssier
> > >
> > >
> > > nytecam a écrit :
> > > >
> > > > Congrats Francois - pushed piggybacked ETX70 to limit last night with
> > > > field spectrum including nova - if partially overlaid by another
> > star;-)
> > > >
> > > >
> >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> > > > <
> >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> > >
> > > >
> > > > Nytecam
> > > >
> > > > --- In staranalyser@yahoogroups.com <staranalyser%40yahoogroups.com>
> > > >
<mailto:staranalyser%40yahoogroups.com<staranalyser%2540yahoogroups.com>>,
> > "Robin Leadbeater"
> > > > <robin@> wrote:
> > > > >
> > > > > Congratulations François,
> > > > >
> > > > > I do not have access to IAU circulars it but according to the latest
> > > > AAVSO
> > > > > alert on this object you are named in IAU Circular #9093 as having
> > > > obtained
> > > > > the earliest spectrum. .
> > > > >
> > > > > It was not taken using a Star Analyer but it could have been. Has
> > > > anyone
> > > > > else tried ?
> > > > >
> > > > > Robin
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "françois teyssier" <francois.teyssier@>
> > > > > To: <staranalyser@yahoogroups.com <staranalyser%40yahoogroups.com>
> > > > <mailto:staranalyser%40yahoogroups.com<staranalyser%2540yahoogroups.com>
> > >>
> > > > > Sent: Monday, November 09, 2009 6:17 PM
> > > > > Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176: Possible
> > > > Nova in
> > > > > Scutum
> > > > >
> > > > >
> > > > > >
> > > > > > Spectrum with LHIRES III 150t/mm
> > > > > >
> > > > > > http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
> > > > <http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html>
> > > > > >
> > > > > > A confirmation...
> > > > > >
> > > > > > Best regards
> > > > > > François Teyssier
> > > > > >
> > > > > >
> > > > > >
> > > > > > Robin Leadbeater a écrit :
> > > > > >>
> > > > > >> Note there is still no spectroscopic confirmation.
> > > > > >>
> > > > > >> Robin
> > > > > >>
> > > > > >> ----- Original Message -----
> > > > > >> From: <aavso@ <mailto:aavso%40aavso.org <aavso%2540aavso.org>>>
> > > > > >> To: <robin@
> > > > > >>
<mailto:robin%40leadbeaterhome.fsnet.co.uk<robin%2540leadbeaterhome.fsnet.co.uk>
> > >>
> > > > > >> Sent: Monday, November 09, 2009 2:54 PM
> > > > > >> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
> > > > > >>
> > > > > >> >
> > > > > >> >
> > > > > >> > AAVSO Special Notice #176
> > > > > >> >
> > > > > >> > Possible Nova in Scutum
> > > > > >> > November 9, 2009
> > > > > >> >
> > > > > >> > CBET #2008 (D.W.E. Green, editor) announced the discovery of a
> > > > possible
> > > > > >> > nova in Scutum on November 8, 2009. The new object was
> > > > discovered by
> > > > > >> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37 UT
> > (JD
> > > > > >> > 2455143.87) who found the object near magnitude 8 on an image
> > > > taken
> > > > > >> > with
> > > > > >> > a 120-mm camera lens and DSLR. The new object has since been
> > > > confirmed
> > > > > >> > by E. Guido and G. Sostero using a Global Rent-a-Scope
> > > > telescope near
> > > > > >> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD 2455144.58).
> > > > Guido
> > > > > >> > and Sostero report an unfiltered magnitude of 8.5, and provide
> > the
> > > > > >> > following astrometry of the new object:
> > > > > >> >
> > > > > >> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
> > > > > >> >
> > > > > >> > Guido and Sostero also note that there is no unambiguous
> > progenitor
> > > > > >> > candidate down to a limiting red magnitude of 20 present on DSS
> > > > images
> > > > > >> > of the field.
> > > > > >> >
> > > > > >> > The object has not yet been confirmed spectroscopically as a
> > nova,
> > > > > >> > although such a classification is presumed. Pending final
> > > > > >> > classification, please submit all observations of this object
> > > > to the
> > > > > >> > AAVSO using the VSX designation "VSX J184345.5-073642".
> > > > > >> >
> > > > > >> > An Alert Notice will be issued if the object is confirmed as a
> > > > nova.
> > > > > >> >
> > > > > >> > This AAVSO Special Notice was prepared by M. Templeton.
> > > > > >> >
> > > > > >> > ---------------------------------------------------
> > > > > >> > SUBMIT OBSERVATIONS TO THE AAVSO
> > > > > >> >
> > > > > >> > Information on submitting observations to the AAVSO may be
> > > > found at:
> > > > > >> > http://www.aavso.org/observing/submit/
> > > > <http://www.aavso.org/observing/submit/>
> > > > > >> <http://www.aavso.org/observing/submit/
> > > > <http://www.aavso.org/observing/submit/>>
> > > > > >> >
> > > > > >> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
> > > > > >> >
> > > > > >> > A Special Notice archive is available at the following URL:
> > > > > >> > http://www.aavso.org/publications/specialnotice/
> > > > <http://www.aavso.org/publications/specialnotice/>
> > > > > >> <http://www.aavso.org/publications/specialnotice/
> > > > <http://www.aavso.org/publications/specialnotice/>>
> > > > > >> >
> > > > > >> > Subscribing and Unsubscribing may be done at the following URL:
> > > > > >> > http://www.aavso.org/publications/email/
> > > > <http://www.aavso.org/publications/email/>
> > > > > >> <http://www.aavso.org/publications/email/
> > > > <http://www.aavso.org/publications/email/>>
> > > > > >> >
> > > > > >>
> > > > > >>
> > > > > >
> > > > > >
> > > > > >
> > > > > > ------------------------------------
> > > > > >
> > > > > > Yahoo! Groups Links
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > >
> >
> >
> >
>
>
>
> --
> "Very funny Scotty... now beam down our clothes!"
> http://tech.groups.yahoo.com/group/astronomical_spectroscopy/?yguid=322612425
>

Hi François - the spectrum of a nova in a crowded starfield probably too much
for a little 70mm OG but a good field shot last night via same at
http://www.cloudynights.com/ubbthreads/attachments/3451384-nsctetx091116.jpg

Cloud arrived [again!] before I could get the 30cm SCT+grating onto the nova ;-(

Nytecam
www.astroman.fsnet.co.uk

--- In staranalyser@yahoogroups.com, françois teyssier <francois.teyssier@...>
wrote:
>
> Hello!
> Nice image with a so little instrument!
> I'm glad to see the first picture of the star itself : I've only the
> spectra. Soon I'll install a parallel camera to get the field of view in
> order to get photometry.
> Have you tried to get a 2D spectrum?
> Best regards
> François Teyssier
>
>
> nytecam a écrit :
> >
> > Congrats Francois - pushed piggybacked ETX70 to limit last night with
> > field spectrum including nova - if partially overlaid by another star;-)
> >
> >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> >
<http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jp\
g>
> >
> > Nytecam
> >
> > --- In staranalyser@yahoogroups.com
> > <mailto:staranalyser%40yahoogroups.com>, "Robin Leadbeater"
> > <robin@> wrote:
> > >
> > > Congratulations François,
> > >
> > > I do not have access to IAU circulars it but according to the latest
> > AAVSO
> > > alert on this object you are named in IAU Circular #9093 as having
> > obtained
> > > the earliest spectrum. .
> > >
> > > It was not taken using a Star Analyer but it could have been. Has
> > anyone
> > > else tried ?
> > >
> > > Robin
> > >
> > > ----- Original Message -----
> > > From: "françois teyssier" <francois.teyssier@>
> > > To: <staranalyser@yahoogroups.com
> > <mailto:staranalyser%40yahoogroups.com>>
> > > Sent: Monday, November 09, 2009 6:17 PM
> > > Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176: Possible
> > Nova in
> > > Scutum
> > >
> > >
> > > >
> > > > Spectrum with LHIRES III 150t/mm
> > > >
> > > > http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
> > <http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html>
> > > >
> > > > A confirmation...
> > > >
> > > > Best regards
> > > > François Teyssier
> > > >
> > > >
> > > >
> > > > Robin Leadbeater a écrit :
> > > >>
> > > >> Note there is still no spectroscopic confirmation.
> > > >>
> > > >> Robin
> > > >>
> > > >> ----- Original Message -----
> > > >> From: <aavso@ <mailto:aavso%40aavso.org>>
> > > >> To: <robin@
> > > >> <mailto:robin%40leadbeaterhome.fsnet.co.uk>>
> > > >> Sent: Monday, November 09, 2009 2:54 PM
> > > >> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
> > > >>
> > > >> >
> > > >> >
> > > >> > AAVSO Special Notice #176
> > > >> >
> > > >> > Possible Nova in Scutum
> > > >> > November 9, 2009
> > > >> >
> > > >> > CBET #2008 (D.W.E. Green, editor) announced the discovery of a
> > possible
> > > >> > nova in Scutum on November 8, 2009. The new object was
> > discovered by
> > > >> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37 UT (JD
> > > >> > 2455143.87) who found the object near magnitude 8 on an image
> > taken
> > > >> > with
> > > >> > a 120-mm camera lens and DSLR. The new object has since been
> > confirmed
> > > >> > by E. Guido and G. Sostero using a Global Rent-a-Scope
> > telescope near
> > > >> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD 2455144.58).
> > Guido
> > > >> > and Sostero report an unfiltered magnitude of 8.5, and provide the
> > > >> > following astrometry of the new object:
> > > >> >
> > > >> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
> > > >> >
> > > >> > Guido and Sostero also note that there is no unambiguous progenitor
> > > >> > candidate down to a limiting red magnitude of 20 present on DSS
> > images
> > > >> > of the field.
> > > >> >
> > > >> > The object has not yet been confirmed spectroscopically as a nova,
> > > >> > although such a classification is presumed. Pending final
> > > >> > classification, please submit all observations of this object
> > to the
> > > >> > AAVSO using the VSX designation "VSX J184345.5-073642".
> > > >> >
> > > >> > An Alert Notice will be issued if the object is confirmed as a
> > nova.
> > > >> >
> > > >> > This AAVSO Special Notice was prepared by M. Templeton.
> > > >> >
> > > >> > ---------------------------------------------------
> > > >> > SUBMIT OBSERVATIONS TO THE AAVSO
> > > >> >
> > > >> > Information on submitting observations to the AAVSO may be
> > found at:
> > > >> > http://www.aavso.org/observing/submit/
> > <http://www.aavso.org/observing/submit/>
> > > >> <http://www.aavso.org/observing/submit/
> > <http://www.aavso.org/observing/submit/>>
> > > >> >
> > > >> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
> > > >> >
> > > >> > A Special Notice archive is available at the following URL:
> > > >> > http://www.aavso.org/publications/specialnotice/
> > <http://www.aavso.org/publications/specialnotice/>
> > > >> <http://www.aavso.org/publications/specialnotice/
> > <http://www.aavso.org/publications/specialnotice/>>
> > > >> >
> > > >> > Subscribing and Unsubscribing may be done at the following URL:
> > > >> > http://www.aavso.org/publications/email/
> > <http://www.aavso.org/publications/email/>
> > > >> <http://www.aavso.org/publications/email/
> > <http://www.aavso.org/publications/email/>>
> > > >> >
> > > >>
> > > >>
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
>

Congratulations François!  I tried for a spectrum last night with DSLR and Star
Analyser, without much success I'm afraid.  I have tall trees in the west, and
the sky was too light.  I managed a couple of fairly washed-out noisy subs
before the nova disappeared, and the only recognisable feature coming out of the
noise seemed to be a strong Ha line.

http://i727.photobucket.com/albums/ww271/Rob_Kau/NSct09spectrumbwsm.jpg

10:15, 16 November 2009.

Cheers -

Rob


--- In staranalyser@yahoogroups.com, françois teyssier <francois.teyssier@...>
wrote:
>
> Hello!
> Nice image with a so little instrument!
> I'm glad to see the first picture of the star itself : I've only the
> spectra. Soon I'll install a parallel camera to get the field of view in
> order to get photometry.
> Have you tried to get a 2D spectrum?
> Best regards
> François Teyssier
>
>
> nytecam a écrit :
> >
> > Congrats Francois - pushed piggybacked ETX70 to limit last night with
> > field spectrum including nova - if partially overlaid by another star;-)
> >
> >
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
> >
<http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jp\
g>
> >
> > Nytecam
> >
> > --- In staranalyser@yahoogroups.com
> > <mailto:staranalyser%40yahoogroups.com>, "Robin Leadbeater"
> > <robin@> wrote:
> > >
> > > Congratulations François,
> > >
> > > I do not have access to IAU circulars it but according to the latest
> > AAVSO
> > > alert on this object you are named in IAU Circular #9093 as having
> > obtained
> > > the earliest spectrum. .
> > >
> > > It was not taken using a Star Analyer but it could have been. Has
> > anyone
> > > else tried ?
> > >
> > > Robin
> > >
> > > ----- Original Message -----
> > > From: "françois teyssier" <francois.teyssier@>
> > > To: <staranalyser@yahoogroups.com
> > <mailto:staranalyser%40yahoogroups.com>>
> > > Sent: Monday, November 09, 2009 6:17 PM
> > > Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176: Possible
> > Nova in
> > > Scutum
> > >
> > >
> > > >
> > > > Spectrum with LHIRES III 150t/mm
> > > >
> > > > http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
> > <http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html>
> > > >
> > > > A confirmation...
> > > >
> > > > Best regards
> > > > François Teyssier
> > > >
> > > >
> > > >
> > > > Robin Leadbeater a écrit :
> > > >>
> > > >> Note there is still no spectroscopic confirmation.
> > > >>
> > > >> Robin
> > > >>
> > > >> ----- Original Message -----
> > > >> From: <aavso@ <mailto:aavso%40aavso.org>>
> > > >> To: <robin@
> > > >> <mailto:robin%40leadbeaterhome.fsnet.co.uk>>
> > > >> Sent: Monday, November 09, 2009 2:54 PM
> > > >> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
> > > >>
> > > >> >
> > > >> >
> > > >> > AAVSO Special Notice #176
> > > >> >
> > > >> > Possible Nova in Scutum
> > > >> > November 9, 2009
> > > >> >
> > > >> > CBET #2008 (D.W.E. Green, editor) announced the discovery of a
> > possible
> > > >> > nova in Scutum on November 8, 2009. The new object was
> > discovered by
> > > >> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37 UT (JD
> > > >> > 2455143.87) who found the object near magnitude 8 on an image
> > taken
> > > >> > with
> > > >> > a 120-mm camera lens and DSLR. The new object has since been
> > confirmed
> > > >> > by E. Guido and G. Sostero using a Global Rent-a-Scope
> > telescope near
> > > >> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD 2455144.58).
> > Guido
> > > >> > and Sostero report an unfiltered magnitude of 8.5, and provide the
> > > >> > following astrometry of the new object:
> > > >> >
> > > >> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
> > > >> >
> > > >> > Guido and Sostero also note that there is no unambiguous progenitor
> > > >> > candidate down to a limiting red magnitude of 20 present on DSS
> > images
> > > >> > of the field.
> > > >> >
> > > >> > The object has not yet been confirmed spectroscopically as a nova,
> > > >> > although such a classification is presumed. Pending final
> > > >> > classification, please submit all observations of this object
> > to the
> > > >> > AAVSO using the VSX designation "VSX J184345.5-073642".
> > > >> >
> > > >> > An Alert Notice will be issued if the object is confirmed as a
> > nova.
> > > >> >
> > > >> > This AAVSO Special Notice was prepared by M. Templeton.
> > > >> >
> > > >> > ---------------------------------------------------
> > > >> > SUBMIT OBSERVATIONS TO THE AAVSO
> > > >> >
> > > >> > Information on submitting observations to the AAVSO may be
> > found at:
> > > >> > http://www.aavso.org/observing/submit/
> > <http://www.aavso.org/observing/submit/>
> > > >> <http://www.aavso.org/observing/submit/
> > <http://www.aavso.org/observing/submit/>>
> > > >> >
> > > >> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
> > > >> >
> > > >> > A Special Notice archive is available at the following URL:
> > > >> > http://www.aavso.org/publications/specialnotice/
> > <http://www.aavso.org/publications/specialnotice/>
> > > >> <http://www.aavso.org/publications/specialnotice/
> > <http://www.aavso.org/publications/specialnotice/>>
> > > >> >
> > > >> > Subscribing and Unsubscribing may be done at the following URL:
> > > >> > http://www.aavso.org/publications/email/
> > <http://www.aavso.org/publications/email/>
> > > >> <http://www.aavso.org/publications/email/
> > <http://www.aavso.org/publications/email/>>
> > > >> >
> > > >>
> > > >>
> > > >
> > > >
> > > >
> > > > ------------------------------------
> > > >
> > > > Yahoo! Groups Links
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
>

Hello!
Nice image with a so little instrument!
I'm glad to see the first picture of the star itself : I've only the
spectra. Soon I'll install a parallel camera to get the field of view in
order to get photometry.
Have you tried to get a 2D spectrum?
Best regards
François Teyssier


nytecam a écrit :
>
> Congrats Francois - pushed piggybacked ETX70 to limit last night with
> field spectrum including nova - if partially overlaid by another star;-)
>
>
http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg
>
<http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jp\
g>
>
> Nytecam
>
> --- In staranalyser@yahoogroups.com
> <mailto:staranalyser%40yahoogroups.com>, "Robin Leadbeater"
> <robin@...> wrote:
> >
> > Congratulations François,
> >
> > I do not have access to IAU circulars it but according to the latest
> AAVSO
> > alert on this object you are named in IAU Circular #9093 as having
> obtained
> > the earliest spectrum. .
> >
> > It was not taken using a Star Analyer but it could have been. Has
> anyone
> > else tried ?
> >
> > Robin
> >
> > ----- Original Message -----
> > From: "françois teyssier" <francois.teyssier@...>
> > To: <staranalyser@yahoogroups.com
> <mailto:staranalyser%40yahoogroups.com>>
> > Sent: Monday, November 09, 2009 6:17 PM
> > Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176: Possible
> Nova in
> > Scutum
> >
> >
> > >
> > > Spectrum with LHIRES III 150t/mm
> > >
> > > http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
> <http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html>
> > >
> > > A confirmation...
> > >
> > > Best regards
> > > François Teyssier
> > >
> > >
> > >
> > > Robin Leadbeater a écrit :
> > >>
> > >> Note there is still no spectroscopic confirmation.
> > >>
> > >> Robin
> > >>
> > >> ----- Original Message -----
> > >> From: <aavso@... <mailto:aavso%40aavso.org>>
> > >> To: <robin@...
> > >> <mailto:robin%40leadbeaterhome.fsnet.co.uk>>
> > >> Sent: Monday, November 09, 2009 2:54 PM
> > >> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
> > >>
> > >> >
> > >> >
> > >> > AAVSO Special Notice #176
> > >> >
> > >> > Possible Nova in Scutum
> > >> > November 9, 2009
> > >> >
> > >> > CBET #2008 (D.W.E. Green, editor) announced the discovery of a
> possible
> > >> > nova in Scutum on November 8, 2009. The new object was
> discovered by
> > >> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37 UT (JD
> > >> > 2455143.87) who found the object near magnitude 8 on an image
> taken
> > >> > with
> > >> > a 120-mm camera lens and DSLR. The new object has since been
> confirmed
> > >> > by E. Guido and G. Sostero using a Global Rent-a-Scope
> telescope near
> > >> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD 2455144.58).
> Guido
> > >> > and Sostero report an unfiltered magnitude of 8.5, and provide the
> > >> > following astrometry of the new object:
> > >> >
> > >> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
> > >> >
> > >> > Guido and Sostero also note that there is no unambiguous progenitor
> > >> > candidate down to a limiting red magnitude of 20 present on DSS
> images
> > >> > of the field.
> > >> >
> > >> > The object has not yet been confirmed spectroscopically as a nova,
> > >> > although such a classification is presumed. Pending final
> > >> > classification, please submit all observations of this object
> to the
> > >> > AAVSO using the VSX designation "VSX J184345.5-073642".
> > >> >
> > >> > An Alert Notice will be issued if the object is confirmed as a
> nova.
> > >> >
> > >> > This AAVSO Special Notice was prepared by M. Templeton.
> > >> >
> > >> > ---------------------------------------------------
> > >> > SUBMIT OBSERVATIONS TO THE AAVSO
> > >> >
> > >> > Information on submitting observations to the AAVSO may be
> found at:
> > >> > http://www.aavso.org/observing/submit/
> <http://www.aavso.org/observing/submit/>
> > >> <http://www.aavso.org/observing/submit/
> <http://www.aavso.org/observing/submit/>>
> > >> >
> > >> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
> > >> >
> > >> > A Special Notice archive is available at the following URL:
> > >> > http://www.aavso.org/publications/specialnotice/
> <http://www.aavso.org/publications/specialnotice/>
> > >> <http://www.aavso.org/publications/specialnotice/
> <http://www.aavso.org/publications/specialnotice/>>
> > >> >
> > >> > Subscribing and Unsubscribing may be done at the following URL:
> > >> > http://www.aavso.org/publications/email/
> <http://www.aavso.org/publications/email/>
> > >> <http://www.aavso.org/publications/email/
> <http://www.aavso.org/publications/email/>>
> > >> >
> > >>
> > >>
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
>
>

Congrats Francois - pushed piggybacked ETX70 to limit last night with field
spectrum including nova - if partially overlaid by another star;-)

http://www.cloudynights.com/ubbthreads/attachments/3450599-nsct85sp091114x2x.jpg

Nytecam

--- In staranalyser@yahoogroups.com, "Robin Leadbeater" <robin@...> wrote:
>
> Congratulations François,
>
> I do not have access to IAU circulars it but according to the latest AAVSO
> alert on this object you are named in IAU Circular #9093 as having obtained
> the earliest spectrum.  .
>
> It was not taken using a Star Analyer but it could have been.  Has anyone
> else tried ?
>
> Robin
>
> ----- Original Message -----
> From: "françois teyssier" <francois.teyssier@...>
> To: <staranalyser@yahoogroups.com>
> Sent: Monday, November 09, 2009 6:17 PM
> Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176: Possible Nova in
> Scutum
>
>
> >
> > Spectrum with LHIRES III 150t/mm
> >
> > http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
> >
> > A confirmation...
> >
> > Best regards
> > François Teyssier
> >
> >
> >
> > Robin Leadbeater a écrit :
> >>
> >> Note there is still no spectroscopic confirmation.
> >>
> >> Robin
> >>
> >> ----- Original Message -----
> >> From: <aavso@... <mailto:aavso%40aavso.org>>
> >> To: <robin@...
> >> <mailto:robin%40leadbeaterhome.fsnet.co.uk>>
> >> Sent: Monday, November 09, 2009 2:54 PM
> >> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
> >>
> >> >
> >> >
> >> > AAVSO Special Notice #176
> >> >
> >> > Possible Nova in Scutum
> >> > November 9, 2009
> >> >
> >> > CBET #2008 (D.W.E. Green, editor) announced the discovery of a possible
> >> > nova in Scutum on November 8, 2009. The new object was discovered by
> >> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37 UT (JD
> >> > 2455143.87) who found the object near magnitude 8 on an image taken
> >> > with
> >> > a 120-mm camera lens and DSLR. The new object has since been confirmed
> >> > by E. Guido and G. Sostero using a Global Rent-a-Scope telescope near
> >> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD 2455144.58). Guido
> >> > and Sostero report an unfiltered magnitude of 8.5, and provide the
> >> > following astrometry of the new object:
> >> >
> >> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
> >> >
> >> > Guido and Sostero also note that there is no unambiguous progenitor
> >> > candidate down to a limiting red magnitude of 20 present on DSS images
> >> > of the field.
> >> >
> >> > The object has not yet been confirmed spectroscopically as a nova,
> >> > although such a classification is presumed. Pending final
> >> > classification, please submit all observations of this object to the
> >> > AAVSO using the VSX designation "VSX J184345.5-073642".
> >> >
> >> > An Alert Notice will be issued if the object is confirmed as a nova.
> >> >
> >> > This AAVSO Special Notice was prepared by M. Templeton.
> >> >
> >> > ---------------------------------------------------
> >> > SUBMIT OBSERVATIONS TO THE AAVSO
> >> >
> >> > Information on submitting observations to the AAVSO may be found at:
> >> > http://www.aavso.org/observing/submit/
> >> <http://www.aavso.org/observing/submit/>
> >> >
> >> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
> >> >
> >> > A Special Notice archive is available at the following URL:
> >> > http://www.aavso.org/publications/specialnotice/
> >> <http://www.aavso.org/publications/specialnotice/>
> >> >
> >> > Subscribing and Unsubscribing may be done at the following URL:
> >> > http://www.aavso.org/publications/email/
> >> <http://www.aavso.org/publications/email/>
> >> >
> >>
> >>
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>

Congrats Tom - most ingenious - is the code available?  Would your s/ware work
via my SX CCD USB2 downloaded FITs at 'video' rate ~4fps or is its application
limited to webcam video?  An you mention, video frame "stacking" required to
effectively go fainter;-).

Typically I set my SX CDD at 10-20s exposures with 'instant' laptop refresh for
faint star spectra and do a [horizontal] line profile via SX s/ware but your
system is obviously dynamic!

regards
Nytecam
ps: apologies if elsewhere I replied to Tom [Kaye] in error!

--- In staranalyser@yahoogroups.com, "Tom" <tom@...> wrote:
>
> Today I bolted together a program that displays real-time stellar
> profiles from a webcam.
>
> Why?  Because I thought it would be exciting to see a profile as it is
> being captured.
>
> And because I'm lazy and didn't want to learn and use K3CCDTools,
> Registax, IRIS or the PS FITS plug-in  (for rotating and converting to
> FITS) and VSpec!
>
> A live profile allows me to adjust my equipment to capture the best
> images rather than squinting, "Hmmmm... I wonder if that's an absorption
> line?" "Is that a better exposure and focus than the previous?" Etc.
>
> No more guessing about brightness, contrast, frame-rate, etc.
>
> I find it interesting to watch how local conditions affect (and don't'
> affect!) the profile...
>
> I'm sort of proud of the software and I wanted to share it with the
> group here. A link to a 3 minute Flash video can be found at this  link.
> <http://www.campparadox.com/tom/spec>
>
> Obviously my results with a webcam and this software will fall far, far
> short of what can be done with better hardware and specialized programs
> like those we all have available (and I listed above).  But a program
> like the one I wrote, though, might be a good educational tool for high
> school kids. And, most importantly, it was fun to write and use and I
> learned from it.
>
> I'm actually interested to see what applications come out  that use the
> general purpose graphical processing units (GPGPU) capabilities on the
> graphics cards now coming from nVidia and AMD.  With the massive
> parallel processing available on these cards, image processing of the
> sort we do can be sped up by more than an order of magnitude!
> Literally, sometimes TWO orders of magnitude!! This is all new
> technology that while it won't have much impact on day-to-day computer
> use, may have a big impact on astronomical image processing.   It will
> be interesting to see what happens as this much computing power gets
> into software that we can use.  Interested? do a little digging for
> GPGPU on google.  It'll blow your socks off what you find.
>
> Forgive me for cross-posting this on the 2 other yahoo newsgroups that
> many of you may also frequent.
>
> Tom
>

Congratulations François,

I do not have access to IAU circulars it but according to the latest AAVSO
alert on this object you are named in IAU Circular #9093 as having obtained
the earliest spectrum.  .

It was not taken using a Star Analyer but it could have been.  Has anyone
else tried ?

Robin

----- Original Message -----
From: "françois teyssier" <francois.teyssier@...>
To: <staranalyser@yahoogroups.com>
Sent: Monday, November 09, 2009 6:17 PM
Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176: Possible Nova in
Scutum


>
> Spectrum with LHIRES III 150t/mm
>
> http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
>
> A confirmation...
>
> Best regards
> François Teyssier
>
>
>
> Robin Leadbeater a écrit :
>>
>> Note there is still no spectroscopic confirmation.
>>
>> Robin
>>
>> ----- Original Message -----
>> From: <aavso@... <mailto:aavso%40aavso.org>>
>> To: <robin@...
>> <mailto:robin%40leadbeaterhome.fsnet.co.uk>>
>> Sent: Monday, November 09, 2009 2:54 PM
>> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
>>
>> >
>> >
>> > AAVSO Special Notice #176
>> >
>> > Possible Nova in Scutum
>> > November 9, 2009
>> >
>> > CBET #2008 (D.W.E. Green, editor) announced the discovery of a possible
>> > nova in Scutum on November 8, 2009. The new object was discovered by
>> > Hideo Nishimura (Miyawaki, Kakegawa, Japan) on 2009 Nov 8.37 UT (JD
>> > 2455143.87) who found the object near magnitude 8 on an image taken
>> > with
>> > a 120-mm camera lens and DSLR. The new object has since been confirmed
>> > by E. Guido and G. Sostero using a Global Rent-a-Scope telescope near
>> > Mayhill, New Mexico, USA on 2009 Nov 09.08 UT (JD 2455144.58). Guido
>> > and Sostero report an unfiltered magnitude of 8.5, and provide the
>> > following astrometry of the new object:
>> >
>> > RA: 18:43:45.57 , Dec: -07:36:42.0 (J2000)
>> >
>> > Guido and Sostero also note that there is no unambiguous progenitor
>> > candidate down to a limiting red magnitude of 20 present on DSS images
>> > of the field.
>> >
>> > The object has not yet been confirmed spectroscopically as a nova,
>> > although such a classification is presumed. Pending final
>> > classification, please submit all observations of this object to the
>> > AAVSO using the VSX designation "VSX J184345.5-073642".
>> >
>> > An Alert Notice will be issued if the object is confirmed as a nova.
>> >
>> > This AAVSO Special Notice was prepared by M. Templeton.
>> >
>> > ---------------------------------------------------
>> > SUBMIT OBSERVATIONS TO THE AAVSO
>> >
>> > Information on submitting observations to the AAVSO may be found at:
>> > http://www.aavso.org/observing/submit/
>> <http://www.aavso.org/observing/submit/>
>> >
>> > SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
>> >
>> > A Special Notice archive is available at the following URL:
>> > http://www.aavso.org/publications/specialnotice/
>> <http://www.aavso.org/publications/specialnotice/>
>> >
>> > Subscribing and Unsubscribing may be done at the following URL:
>> > http://www.aavso.org/publications/email/
>> <http://www.aavso.org/publications/email/>
>> >
>>
>>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>

Nice result Francois,

I have forwarded your post to AAVSO

Robin

----- Original Message -----
From: "françois teyssier" <francois.teyssier@...>
To: <staranalyser@yahoogroups.com>
Sent: Monday, November 09, 2009 6:17 PM
Subject: Re: [staranalyser] Fw: AAVSO Special Notice #176: Possible Nova in
Scutum


>
> Spectrum with LHIRES III 150t/mm
>
> http://www.astronomie-amateur.fr/Projets%20Spectro4%20Novae.html
>
> A confirmation...
>
> Best regards
> François Teyssier
>
>
>
> Robin Leadbeater a écrit :
>>
>> Note there is still no spectroscopic confirmation.
>>
>> Robin
>>
>> ----- Original Message -----
>> From: <aavso@... <mailto:aavso%40aavso.org>>
>> To: <robin@...
>> <mailto:robin%40leadbeaterhome.fsnet.co.uk>>
>> Sent: Monday, November 09, 2009 2:54 PM
>> Subject: AAVSO Special Notice #176: Possible Nova in Scutum
>>
>> >
>> >
>> > AAVSO Special Notice #176
>> >
>> > Possible Nova in Scutum
>> > November 9, 2009
>> >