[AAVSO-HEN] Fwd: [vsnet-alert 10350] OT 020207+200715

arne arne at aavso.org
Mon Jul 21 09:07:06 EDT 2008


Arne Henden wrote:
> This looks interesting - an hour old, but if this is an "orphan afterglow",
> it may still be 18th mag or so.  you might try an image of it if possible.
> Arne
> 
> 
> ---------- Forwarded message ----------
> From: Grzegorz Wrochna <Grzegorz.Wrochna at fuw.edu.pl>
> Date: Sun, Jul 20, 2008 at 7:26 PM
> Subject: [vsnet-alert 10350] OT 020207+200715
> To: vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
> Cc: grb at fuw.edu.pl
> 
> 
> "Pi of the Sky" has automatically detected an optical transient
> 2008.07.19 9:45:00 UT at RA = 02h 02m 07s  Dec= +20d 07m 15s.
> 
> Preliminary photometry (CCD with IR-cut filter passing 390-690nm):
> 
> 9:44:46-9:44:56 - >12mag limit
> 9:45:00-9:45:10 - 10.7
> 9:45:12-9:45:22 - 11.4
> 9:45:24-9:46:25 - 12.0
> 9:46:27-9:47:05 - 12.5
> 
> Images can be seen at
> http://grb.fuw.edu.pl/pi/events/200807/18/event0.php
> 
> Grzegorz Wrochna
> for "Pi of the Sky" team
> http://grb.fuw.edu.pl
> _______________________________________________

Further information from Taichi Kato and Brian Skiff seem to indicate
that this was most likely a flare from an m-dwarf.  This makes the object
far less interesting to follow up!  However, you now have a bright GRB
afterglow - much more fun.  Good luck!
Arne


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