GCN Circular 22205
Subject
GRB 171205A: TSHAO optical observations
Date
2017-12-07T19:30:56Z (7 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Pozanenko (IKI), E. Mazaeva (IKI), M. Krugov (FAPHI),
I. Reva (FAPHI), A. Kusakin (FAPHI), report on behalf of larger GRB
follow-up collaboration:
We observed the field of GRB 171205A (D'Elia et al., GCN 22177) with
Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory starting on
Dec. 06 (UT) 22:2319. 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 marginally detected.
Preliminary photometry is following.
Date UT start t-T0 Filter Exp. OT Err.
(mid, days) (s)
2017-12-06 22:23:19 1.63574 R 1500 20.4 0.3
The photometry is based on several nearby USNO-B1.0 stars previously used in
GCN 22193.