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[vsnet-chat 6158] Re: SS Aur problem

I have seen SS sporadically recently ( prior to the current lunation).  Using the aavso e ch. where the 158 star was seen  about 50% T once it was seen fainter than the 158 star( 159 ) and several times not at all. From experience with my scope I would have to agree with Mike that the star values are about .2 mags too bright ( perhaps just a little more in the 158 case). Will change over to the F ch. at the next opp. That said the CCDV obs., in the AAVSO QL file by MTK,VWA, and GKA  obs. answered a curiosity about SS's capricious activity and why at times it could not be seen. It would have been helpful to use, in addition, the same faint comps. on the F ch. as those on the e ch.
>From the AAVSO light curve gen. there are numerous, <16M CCD observations. Indeed there are multiple, <16M CCD observations over several cycles, most likely indicating a precedence for this activity, at least for users of the F ch.

Dan Taylor.

Gary Poyner wrote:
The problem isn't the magnitude, it's whether you can see it or
not.  Why do some observers with suitable aperture 'see' SS Aur
whilst others (again with suitable aperture) do not?  Is something
going on with SS Aur itself, or is there an ID problem?

Gary

-------------------------------------------------------------
Gary Poyner
garypoyner@blueyonder.co.uk
gp@star.sr.bham.ac.uk
http://vsnet.garypoyner.pwp.blueyonder.co.uk/varstars.html
--------------------------------------------------------------

----- Original Message -----
From: "Taichi Kato" <tkato@kusastro.kyoto-u.ac.jp>To: <vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp>
Sent: Friday, March 14, 2003 11:38 AM
Subject: [vsnet-chat 6156] Re: SS Aur problem


Re: [vsnet-chat 6151] Re: SS Aur problem

I'm afraid this is yet another case of scatter being introduced into the
data by the use of different sequences to some extent.
Simultaneous observations by observers using divergent sequences will
not
clarify the situation.
   First try to observe with observer's familiar chart, and make
comparison.
The next step is to see whether the result is dependent on different
charts.  If these results are not consistent (i.e. more than 0.2 mag
difference), we possibly need to search for a different reason.  There
seem to have been too(?) many "14.5 mag" detections, and they don't
look like observer-specific.

Regards,
Taichi Kato





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