GCN Circular 29710
Subject
GRB 210323A: Kitab optical upper limit
Event
Date
2021-03-24T15:05:43Z (5 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
N. Pankov (HSE), A. Pozanenko (IKI), A. Novichonok (Petrozavodsk State
University, KIAM), A. Zhornichenko (KIAM), S. Belkin (IKI), Sh.
Ehgamberdiev (UBAI) report on behalf of GRB IKI FuN:
We observed the field of short GRB 210323A (Swift detection: Gropp et
al., GCN 29699; GBM/Fermi detection: Hamburg et al., GCN 29709)
with Kitab-ISON RC-36 telescope starting on 2021-03-23 (UT) 22:36:32.
We obtained several images in Clear filter. We do not detect the
afterglow candidate (Malesani et al., GCN 29703; Pozanenko et al., GCN
29708) within enhanced Swift-XRT position (Evans et al., GCN 29704).
Preliminary photometry of the field is following
Date, UT start, t-T0, Exp., Filter, OT, Err., UL
(mid, days)
2021-03-23 22:36:32 0.02759 11*60 CR n/d n/d 16.6
The photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id R2
1153-0524361 15.3
1153-0524625 14.44
1153-0524441 15.36