GCN Circular 29292
Subject
GRB 210112A: Kitab a optical upper limit
Event
Date
2021-01-12T11:19:27Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Novichonok (Petrozavodsk State University, KIAM), S. Belkin (IKI),
A. Pozanenko (IKI), Sh. Ehgamberdiev (UBAI) report on behalf of GRB IKI FuN:
We observed the field of GRB 210112A (Ambrosi et al., GCN 29289) with
Kitab-ISON RC-36 telescope starting on 2021-01-12 (UT) 01:54:30, i.e.
447 seconds after trigger in Clear filter. We do not detect the
afterglow candidate (Ambrosi et al., GCN 29289) within enhanced
Swift-XRT position (Goad et al., GCN 29290).
Preliminary photometry of the field is following
Date, UT start, t-T0, Exp., Filter, OT, Err., UL
(mid, days)
2021-01-12 01:54:30 0.01541 11*30 CR n/d n/d 18.5
The photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id R2
1231-0260671 14:35:00.70080 +33:06:09.4428 14.32
1229-0281658 14:34:57.67344 +32:58:13.0800 14.75
At 01:37:03 UT