Colin Henshaw Preliminary first results using the below instrumentation and specifications. I would have started earlier, but I was destracted by a bright...
The Society for Popular Astronomy (SPA) and the BAA VSS have agreed to launch a joint observing programme, namely to observe delta UMa and beta Leonis as...
14.5C @20080303.977UT. Also known as 1RXS J042332.8+745300. HS0417+7445 is a medium priority CV/DN/SU candidate on Boris Gaensicke's Hamburg Quasar Survey...
Dear Ian, ... thanks for the alert - if this is a superoutburst, time-series photometry would be very useful to refine the superhump period. Best wishes, Boris...
Combining Ian's latest obs with those in the AAVSO International Database reveals 6 outburst since 2005, having an average outburst interval of 212 d (+/- 65...
The recent case of HS etc amply illustrates one thread of meaningful pro-am liaison within the modern CV context. There's been no comeback on this, weren't the...
da55@...
Mar 4, 2008 4:17 pm
1621
Brighter tonight, now equalling its brightest on record, suggesting this could be a superoutburst. Mar 4.803 13.7C Jeremy Shears To:...
I have managed to have a look at some of the web based resources suggested to me by fellow members of this group. Much of it seems to require access to a fair...
Well a large scope and CCD are very nice of course, but you don't need either to monitor objects on the Recurrent Objects Programme for example. A 20-25cm...
Chris, I don't know what kind of equipent you have, but suffice to say I'm making my first faltering steps into the field of photometry. I'm using an...
We observed a new optical transient CSS080304:090240+052500 using our 25cm telescope at Higashi-Hiroshma Observatory, Japan. The object is now aboue 16.8mag in...
Akira Arai
arai-akira@...
Mar 5, 2008 4:01 pm
1626
Photometry conducted last night shows hump-like modulations (possibly growing superhumps) in the light curve with rough period 110 min. Unfortunately the...
Hello Jeremy- The weather cleared tonight and I am on HS0417+7445 right now. I'll forward the data tomorrow to you to fold with your earlier observations. ...
Dear colleagues, I performed time-series photometry of the object last night. The data show superhumps with an amplitude of ~0.5 mag. The superhump period is...
For those of ya who ain't picked up on this somewhere http://tech.groups.yahoo.com/group/AVSON/message/1035 Cheers John...
da55@...
Mar 6, 2008 6:51 pm
1631
http://arxiv.org/abs/0803.0751 Alright then, how do the current swathe of dwarf novae formation theories cope with something like this then? It seems not to be...
da55@...
Mar 7, 2008 12:59 pm
1632
Hi John, ... Your message suggests some mix-up of things: A CV, by definition, has a companion star that fills its Roche lobe. In a detached WD+dM binary, by...
OT_J055924.1-512522 is said to be an outbursting dwarf nova (ugsu) and not a SN as might be suspected from its position near PGC 18187. I have uploaded an...
Has anybody tried to confirm this possible nova? I'll try over the weekend if the weather cooperates, but it's not looking too good. Keith.. ... From: "Gary...
I took an image of the field while I was having a play with the Global Rent-a-Scope system yesterday evening (25cm RCOS telescope in Australia). I sent a...
"OT_J055924.1-512522 is said to be an outbursting dwarf nova (ugsu)" For those who actually care about provenance and informational audit trails and that it...
da55@...
Mar 8, 2008 1:29 am
1638
Hi Boris "most likely you are looking at many millions to 100 million years" yep, that's the bit I was trying to get to, but I got lost on the way during two...
da55@...
Mar 8, 2008 1:37 am
1639
and it's dropped off the bottom of the relevant CBAT page without cropping up in an IAUC nor CBET either. Maybes, next time around, they will adhere to their...
da55@...
Mar 8, 2008 1:42 am
1640
"OT_J055924.1-512522 is said to be an outbursting dwarf nova (ugsu)" You seem quite, and frequently, capable of copying and pasting links pointing to your own...
da55@...
Mar 8, 2008 2:20 am
1641
Hi John, [apologies to all others for spamming this list - this my last message on this topic] ... I am afraid that you've got the stick totally on the wrong...
Hello John, 3-hour detached binaries are of very great interest, and those containing white dwarfs are practically dead certainties to become CVs, and that...
Hi Joe, ... No rules broken here. If it's VS related, then we welcome comments and discussion! Thanks for the posting. On another matter totally unrelated to...
The CBAT Unconfirmed Observations Page can be found at:- http://cfa-www.harvard.edu/iau/unconf/cbat_unconf.html It clearly states on the web page that "This...
Boris G informed : "Hi John, ... I am afraid that you've got the stick totally on the wrong end here. Angular momentum loss (AML) in binaries occurs *always*,...
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