GCN Circular 18441
Subject
GRB 151022A: Mondy optical upper limit
Event
Date
2015-10-22T19:35:01Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Klunko (ISTP), E. Mazaeva (IKI), A. Volnova (IKI), I. Korobtsev
(ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up
collaboration:
We observed the field of Swift GRB 151022A (D'Avanzo et al., GCN 18436)
with AZT-33IK telescope of Sayan observatory (Mondy) starting on Oct. 22
(UT) 15:05:04. We obtained several images in R-filter of 30 s exposure.
Within XRT error circle (Evans, GCN 18438) we do not detect any
optical source in any single image. Upper limit (3 sigma) of a single
image is R ~ 19.4m. Photometry is based on nearly USNO-B1.0 (R2) stars.