GCN Circular 16667
Subject
GRB 140801A: AAO optical observations
Event
Date
2014-08-04T01:38:25Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), R. Inasaridze (AAO), Molotov (KIAM), A. Pozanenko (IKI)
report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 140801A (Pelassa, GCN 16658) with AS-32 (0.7m)
telescope of Abastumani Observatory starting on Aug. 02 (UT) 21:54:52. We
obtained several unfiltered frames under of 60 s under average FWHM of 2.0
arcsec. The optical afterglow (Gorbovskoy et al., GCN 16653; Xu et al., GCN
16656, Masi, GCN 16659) is well detected on the stacked image.
Details of a photometry of the GRB 140801A are following:
date UT start t-T0 Filter Exp. OT err
(mid, days) (s)
2014-08-02 21:54:52 1.14962 None 26*60 22.13 0.18
The photometry is based on the USNO-B1 star ((J2000) 02:56:16.58 +30:57:02.1
assuming R = 16.06) suggested by Moskvitin et al., (GCN 16663). Our
photometry does not contradict un-broken decay of a light curve of GRB
140801A (Kann et al., GCN 16666).