GCN Circular 22223
Subject
GRB 171205A: SAO-RAS optical observations
Event
Date
2017-12-10T10:02:37Z (8 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Moskvitin (SAO RAS), A. Pozanenko (IKI) report on
behalf of of larger GRB follow-up collaboration:
We observed the field of GRB 171205A (D'Elia et al., GCN 22177) with
Zeiss-1000 telescope of SAO-RAS Observatory starting on Dec. 09 (UT)
01:07:09. We took several images in R-filter. The afterglow of GRB
171205A (Izzo et al. GCN 22180; Emery et al. GCN 22181; Butler et al.
GCN 22182; Mao et al. GCN 22186; Choi et al. GCN 22188; Melandri et al.
GCN 22189; Steeghs et al. GCN 22190; Cobb et al. GCN 22192; Volnova et
al. GCN 22193; Guidorzi et al. GCN 22197; Schmidl et al. GCN 22198;
Lipunov et al. GCN 22199; Ugarte Postigo et al. GCN 22204) is clearly
detected. Preliminary photometry is following.
Date UT start t-T0 Filter Exp. OT Err. UL
(mid, days) (s)
2017-12-09 01:07:09 3.79078 R 22*300 18.60 0.04 22.5
The photometry is based on several nearby USNO-B1.0 stars previously
used in GCN 22193.