GCN Circular 17305
Subject
GRB 150110B: Khureltogot optical upper limit
Date
2015-01-17T19:51:52Z (9 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), S. Schmalz (AIP), N. Tungalag (Research Center of
Astronomy and Geophysics MAS), A. Volnova (IKI), I.Molotov (KIAM), A.
Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB GRB 150110B (Evans et al., GCN 17291) with
ORI-40 telescope of Khureltogot observatory. We obtained several
unfiltered images on Jan. 10 starting on (UT) 22:31:36. In a combined
image of the first 40 frames we do not detect any optical source within
enhanced Swift-XRT position (Beardmore et al., GCN 17294). A
photometry of the combined image is following
Date UT start t-T0 Filter Exp. ULimit (3sigma)
(mid, days) (s)
2015-01-10 22:31:36 0.03113 none 40*60 19.3
The photometry is based on USNO-B1.0 stars
USNO-B1_id RA DEC R2
1224-0426323 289.294781 +32.470745 13.52
1225-0423392 289.295778 +32.569009 13.80