GCN Circular 34996
Subject
GRB 231110A: Terskol Zeiss-2000 optical upper limit
Date
2023-11-12T10:50:05Z (6 months ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
Via
legacy email
N. Pankov (IKI, HSE), I. Sokolov (INASAN, KIAM), A. Buslaeva (INASAN), A. Pozanenko (IKI), S. Belkin (IKI, HSE) report on behalf of GRB IKI FuN:
We observed the Swift GRB 231110A (D'Elia et al., GCN #34977) with Zeiss-2000 telescope of Terskol observatory starting on 2023-11-10 (UTC) 23:25:16. We do not detect any object within Source #2 of XRT probable afterglow (Beardmore et al., GCN 34986). This is cosnistent with non-detection in other observations (Lipunov et al., GCN 34978; Sun et al., GCN 34979; Sun et al., GCN 34985; Moskvitin et al., GCN 34987; Gompertz et al., GCN 34988). Preliminary photometry of the field is following.
Date UT start t-T0 Filter Exp. OT Err. UL. Telescope
(mid, days) (s)
2023-11-10 23:25:16 0.08729 R 28*120 R n/d n/d 22.4 Zeiss-2000
The photometry is based on the nearby USNO-B1.0 stars.