GCN Circular 31751
Subject
GRB 220310A: K-800 of Terskol observatory optical upper limit
Date
2022-03-13T10:30:02Z (2 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI, HSE), V. Agletdinov (KIAM), A. Pozanenko (IKI), I.
Sokolov (INASAN, KIAM), N. Pankov (HSE) report on behalf of GRB IKI FuN:
We observed GRB 220310A (Negoro et al., GCN 31725; Yoshida et al., GCN
31730; Svinkin et al., GCN 31748) with K-800 telescope of Terskol
observatory starting on Mar. 12 (UTC) 21:34:44. We do not detect the
optical afterglow (Lipunov et al., GCN 31732; Kumar et al., GCN 31738;
Fouad et al., GCN 31750). Preliminary photometry of the field in
Clear filter is following
Date UT start t-T0 Filter Exp. OT Err UL(3sigma)
2022-03-12 21:34:44 2.89151 Clear 68*30 n/d n/d 20.8
The photometry is based on the nearby SDSS-DR12 stars R (Lupton
transformations)
R.A. Dec R
11:13:05.99760 +23:17:03.0084 16.852
11:12:35.64984 +23:13:33.4308 16.911