[Aavso-photometry] [cvnet-discussion] Possible dwarf nova

Wed Jan 30 15:17:07 EST 2008

Dear colleagues,

There's definitely a new object at the below reported position. I just
collected a few CCD images (Jan 30.83 UT) and the optical transient is
visible at mag 14.2 (unfiltered). 

Sky conditions are not too bad, so I have started a CCD photometry session
on this target using a 0.35-m f/6.3 telescope and ST-7 XME CCD. I hope to
continue for another hour or two. Hopefully someone else can take over later
tonight in the US.

I'll keep you posted on my findings.

Best regards,
Tonny

PS : Thank you Patrick, for reporting this outburst !
Tonny Vanmunster
CBA Belgium Observatory
http://www.cbabelgium.com <http://www.cbabelgium.com/> 

PERANSO : The Light Curve and Period Analysis Software
http://www.peranso.com <http://www.peranso.com/> 

  _____  

From: cvnet-discussion at yahoogroups.com
[mailto:cvnet-discussion at yahoogroups.com] On Behalf Of Patrick Wils
Sent: Wednesday, January 30, 2008 9:44 AM
To: cvnet-discussion at yahoogroups.com
Subject: [cvnet-discussion] Possible dwarf nova

The Catalina Sky Survey <http://voeventnet.
<http://voeventnet.org/feeds/Catalina.shtml> org/feeds/Catalina.shtml> has
observed an optical transient of magnitude 14.3 last night
<http://nesssi.
<http://nesssi.cacr.caltech.edu/catalina/20080130/801301180124103586.html>
cacr.caltech.edu/catalina/20080130/801301180124103586.html>
which might be an outburst of USNO-B1.0 1072-0031053 (position 02:11:10.19
+17:16:24.4), a star which is normally R=19.2. Brightenings are not seen
on NEAT images <http://skyview.
<http://skyview.gsfc.nasa.gov/skymorph/skymorph.html>
gsfc.nasa.gov/skymorph/skymorph.html>, but
the object appears bright on 2 out of 9 POSSII images (a blue image from
1987.94 and a red image from 1990.88, while it was faint on red images 1
and 2 months before). These images are available for a limited time at
<http://www.nofs. <http://www.nofs.navy.mil/tmp/fchqDBQy8_fch.html>
navy.mil/tmp/fchqDBQy8_fch.html>.

Patrick

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