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GCN Circular 18725

Subject
GRB 151212A iTelescope observation
Date
2015-12-27T04:48:03Z (8 years ago)
From
Takanori Sakamoto at AGU <tsakamoto@phys.aoyama.ac.jp>
Y. Kitaoka, T. Sakamoto, A. Yoshida (AGU) 

We observed the field of GRB 151212A detected by MAXI (Nakahira et al., GCN Circ. 18685) 
with the iTelescope.Net (http://www.itelescope.net) T18 (Plane Wave CDK) telescope located 
at the AstroCamp Observatory (Nerpio, Spain).  20 images of 60 sec exposures were taken 
in the Red filter starting from December 12 22:43:00 (UT) about 8.7 hours after the trigger 
and stopped on December 12 23:17:03 (UT).  We do not detect the optical afterglow both in the 
individual images and the stacked image at the X-ray afterglow position 
(Roegiers et al., GCN Circ. 18687).  The estimated five sigma upper limit of the combined 
image (total exposure of 1200 sec) is ~17.0 using the USNO-B1 catalog.
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