GCN Circular 22193
Subject
GRB 171205A: CHILESCOPE optical observations
Date
2017-12-06T20:57:10Z (6 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), A. Pozanenko (IKI), E. Mazaeva (IKI), M. Krugov
(AFIF) report on behalf of IKI-GW follow-up collaboration:
We observed the field of GRB 171205A (D'Elia et al., GCN 22177) with
RC-1000 1m telescope of CHILESCOPE observatory. The observations carried
out in a clear filter starting on Dec. 06 (UT) 06:46:47. The afterglow
of GRB 171205A (e.g. Osborne et al., GCN 22179; Izzo et al., GCN
22180; Emery et al., GCN 22181) is clearly detected. Preliminary
photometry is following.
Date UT start t-T0 Filter Exp. OT Err.
(mid, days) (s)
2017-12-06 06:46:47 1.00122 CR 3600 18.20 0.07
The photometry is based on several nearby USNO-B1.0 stars (R2 magnitudes).
USNO-B1.0 RA Dec R2
0774-0291882 11:09:46.28 -12:35:02.8 17.25
0773-0296803 11:09:34.42 -12:37:07.2 16.58
0774-0291827 11:09:37.14 -12:32:33.8 16.45
0774-0291826 11:09:36.63 -12:34:12.4 16.40
0774-0291864 11:09:43.12 -12:33:49.8 16.30
0774-0291938 11:09:56.38 -12:35:37.7 16.40
0773-0296901 11:09:57.46 -12:36:29.0 15.34
Finding chart can be found at
http://grb.rssi.ru/GRB171205A/GRB171205_RC1000-171206.png
