GCN Circular 17489
Subject
GRB 150222A: Mondy optical observations
Date
2015-02-22T22:42:58Z (9 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
E. Mazaeva (IKI), A. Volnova (IKI), E. Klunko (ISTP), I. Korobtsev
(ISTP), M. Eselevich (ISTP), A. Pozanenko (IKI) report on behalf of
larger GRB follow-up collaboration:
We observed the field of GRB 150222A (Bernardini et al., GCN 17486)
with AZT-33IK telescope of Sayan observatory (Mondy) starting on Feb.,
22 (UT) 17:48:56. We obtained 37 images in R-filter of 120 s exposure.
Within the Swift-XRT error circle (Bernardini et al., GCN 17486) we
marginally detected optical source with a magnitude of R=22.15+/-0.25
at 0.06201 days after trigger (mid time). Photometry of the source is
based on nearby USNO-B1.0 (R2) stars. At this time we cannot confirm
variability or fading nature of the source.