Hello, some echelle observations, taken with a 0.35m f5 telescope, eshell+ST10 camera covering 4300 to 7300 A at R10000 with 0.1A dispersion. Tungstene 2700k...
Thanks Thierry, These will be very useful to define the end of the eclipse spectroscopically. I took spectra on 27th Jan. I could still see a small signal...
1846
Thierry Garrel
gabalou@...
Feb 1, 2012 6:43 pm
Risk of snow prevent me to open the observatory but the sky is still clear and windy. There is a bright eps aur waiting for spectra, so doing spectra or not...
1847
Stan Gorodenski
stanlep@...
Feb 6, 2012 4:03 am
What are the current ideas of the inclination of the disk that eclipses EA? Stan...
Hi Stan, 90 +/- 2 at most. I'll have a better handle on this in a few weeks though. Brian...
1849
Stan Gorodenski
stanlep@...
Feb 6, 2012 4:29 am
Thanks, Brian. Stan...
1850
R. Stencel
colorado.ida@...
Feb 11, 2012 3:58 pm
as originally proposed for eps Aur, now finding an app to the Milky Way core: "The once-per-day X-ray flares from Sagittarius ...
1851
R. Stencel
colorado.ida@...
Feb 11, 2012 4:22 pm
During the campaign, several observers reported spectral line splitting. The suspicion is that "pulsations" of the F star contributed to same. Given the...
Hi Bob, Thanks. THe paper looks interesting. Do you know how I can get an English version? Also the downloaded file has a .pdf after it, but does not seem to...
... I checked with the author a while back and didn't get a reply after several attempts so I don't think an English version is forthcoming. Anyone know...
Hi Bob, As well as those seen by Buil and already reported in the Jan 2011 AAS poster, there will likely be more splitting events yet to be extracted from the...
1855
R. Stencel
colorado.ida@...
Feb 12, 2012 5:49 pm
Funny story, Jeff. Unless someone in the group reads Korean, I'll need to find a translator. Even google translate doesn't do the job. However, most of the...
1856
Stan Gorodenski
stanlep@...
Feb 16, 2012 3:28 am
I was looking through Keith Robinson's book "Spectroscopy: The Key to the Stars". On page 37 he has an energy level diagram for Sodium. I have seen this...
Hi Stan, You may notice a dull yellow glow from the West side of Phoenix. I have my low pressure sodium lamp working now and plan to do some spectroscopic...
Stan, I think the diagram in your book is incorrect. This one: http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/sodzee.html has the shorter wavelength line...
1859
Stan Gorodenski
stanlep@...
Feb 16, 2012 4:44 am
Thanks, Brian and thanks Jeff. Jeff, I see you gave the same link Brian gave but did not see any graph. When Brian gave the same one then it occurred to me I...
Certainly looks that way. I will drop him a line, he is a member of the astro society in the adjacent county to me. The person he mentions in the intoduction...
1861
R. Stencel
colorado.ida@...
Feb 16, 2012 4:07 pm
Hi Stan, A good source for spectrum info is http://physics.nist.gov/PhysRefData/ASD/lines_form.html and they show energy levels for the Na D lines as follows: ...
1862
R. Stencel
colorado.ida@...
Feb 16, 2012 4:09 pm
Several papers have been received, but never too late for more. The editor suggests they can be a bit relaxed about the original deadline, but if you can...
1863
FrankJ12@...
Feb 16, 2012 4:40 pm
Dr. Bob - I already sent in my paper last week. They received all the files and everything looks fine. They will keep me informed on its progress. Frank J M ...
The excess absorption from neutral potassium has now reached the same level as when I first detected it above the noise on 24th May 2009 (0.03A EW) See...
1866
Thierry Garrel
gabalou@...
Feb 19, 2012 5:10 pm
Very nice observations. So it vanished nearly one month after H alpha bump. I still continue eshell observation, not covering potassium. I hope you will take...
1867
R. Stencel
colorado.ida@...
Feb 20, 2012 1:03 am
Congrats on a very successful experiment! On Sun, Feb 19, 2012 at 8:51 AM, Robin Leadbeater <...
Thierry, the next eclipse of epsilon Aurigae is in about 25 years... Cordialement, Olivier Thizy Shelyak Instruments Manufacturing: 77, rue de Chartreuse,...
1869
Thierry Garrel
gabalou@...
Feb 20, 2012 8:08 am
It is not about eclipse, apoastre and peri astre of the system are independant from our sightseing. Cheers T Le 20 févr. 2012 09:05, "Olivier Thizy"...
... The spectroscopic orbital solutions would imply aperiastron is near 2459460 and the next periastron is around JD 2464405. Note that periastron happens a...
1871
Thierry Garrel
gabalou@...
Feb 20, 2012 7:13 pm
Thanks Brian. I wonder what we would see in the spectra during apo astre. The problem is still the highly variable Ha profile due to the primary but we should...
1872
R. Stencel
colorado.ida@...
Feb 22, 2012 12:37 am
Depends which orbital solution you prefer, but periastron was a few years pre-eclipse, either ~2006 Chadima et al. or ~2008 Stefanik et al. ... Depends which...
1873
Thierry Garrel
gabalou@...
Feb 22, 2012 8:00 am
Chadima is not a multilines Rv studies. Stephanik is but not so many. Why not using mask technic on the overall optical domain ? T ... Chadima is not a...
