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Checking through my records, using the BAAVSS chart for SS Aur I have never seen it fainter than 15.6. I also hardly ever have trouble seeing it a minimum (except for nights with bright Moon), with it usually being seen between 15.0 & 15.5 - occasionally brighter. I edit the VS pages for 'The Astronomer' magazine, and the minimum magnitude reported by observers for SS Aur is in the 15's. Regardless of the sequence used, if it was at 16.7 visual, I wouldn't see it at all! Cheers, 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-campaign-dn@ooruri.kusastro.kyoto-u.ac.jp>; <vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp> Sent: Friday, March 14, 2003 2:04 AM Subject: [vsnet-chat 6150] Re: SS Aur problem > Re: SS Aur problem > > > The last nigth I have observed the star SS Aur > > with 203 mm SC telescope f/10, +CCD. > > I have valued m= 16.7V using Chart AAVSO CCD , > > I believe that CCD and visual values will differ. > > (What happened to the star SS Aur?) > > Although there is a prevailing belief that the star is around mv=14.5 > or 15.0 in quiescence, as listed in some catalogs, the true quiescence > is usually much fainter. Other than special time around frequently > outbursting states (this is possibly a cosequence of an incerased mass-transfer > rate), CCD V-band observations usually gave magnitudes fainter than V=16.0. > Visual observers with large apertures, such as MRV, SXN and TDB, tend to > give consistent results with CCD observation. > > You may see the VSNET SS Aur page and look at the GIF chart, which > shows SS Aur V=16.2. > > http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/gcvs/AURSS.html > > The present magnitude is slightly fainter than this, but is not > astonishingly faint. > > Regards, > Taichi Kato >
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