GCN Circular 34994
Subject
GRB 231111A: Mondy optical observations
Date
2023-11-12T03:05:47Z (6 months ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
Via
legacy email
N. Pankov (HSE, IKI), E. Klunko (ISTP), A. Pozanenko (IKI), S. Belkin (IKI,HSE) report on behalf of GRB IKI FuN:
We observed the field of Swift GRB 231111A (Melandri et al. GCN 34981) with AZT-33IK telescope of Mondy observatory in R-filter on
2023-11-11 starting (UT) 14:36:53. We detect afterglow (Melandri et al. GCN 34981; Jiang et al. GCN 34982; Lipunov et al. GCN 34983) within Enhanced Swift-XRT error circle.
Preliminary photometry of first images is following
Date UT start t-T0 Exp. Filter OT Err. UL(3sigma)
(mid, days) (s)
2023-11-11 14:36:53 0.014284 1x120 R 18.24 0.08 20.3
The photometry is based on nearby USNO-B1.0 R2 stars.