GCN Circular 28266
Subject
GRB 200819A: Kitab, TSHAO optical upper limit
Date
2020-08-19T21:04:51Z (4 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
S. Belkin (IKI), A. Kusakin (FAPHI), A. Novichonok (KIAM), A. Pozanenko
(IKI), I. Reva (FAPHI), E. Mazaeva (IKI), A. Volnova (IKI) report on
behalf of larger GRB follow-up collaboration:
We observed the field of GRB 200819A (Dichiara et al., GCN 28263) with
Zeiss-1000 telescope of Tien Shan Astronomical observatory starting on
August 19 (UT) 18:03:47 and with RC-36 of Kitab observatory on (UT)
16:30:50. We do not detect any optical object within enhanced XRT
position (Evans et al., GCN 28265). Preliminary photometry of the field
is following.
Date UT start t-T0 Filter Exp. OT Err. UL Telesope
(mid, days) (s)
2020-08-19 16:30:50 0.05345 CR 3600 n/d n/d 20.0 RC-36
2020-08-19 18:03:47 0.10289 R 990 n/d n/d 21.2 Zeiss-1000
The photometry is based on nearby USNO-B1.0 stars.
Ref.stars
USNO-B1.0_id R2
1530-0056474 15.45
1530-0056771 15.06