GCN Circular 16453
Subject
GRB 140620A / iPTF14cva: TShAO optical observations
Event
Date
2014-06-24T23:39:18Z (11 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
A. Volnova (IKI), W. Mundrzyjewski (Fesenkov Astrophysical Institute), A.
Kusakin (Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on
behalf of larger GRB follow-up collaboration:
We observed the optical candiadate iPTF14cva (Kasliwal et al., GCN 16425) of
Fermi GRB 140620A (Fermi trig. # 424934131) (Fitzpatrick et al., GCN
16426) with Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical
Observatory on June, 20 starting (UT) 21:22:56. We took several images in
R-filter. We clearly detected optical transient (Siegel et al., GCN 16432;
Kelemen GCN 16440) in a stacked image.
Details of the photometry are following:
date UT start t-T0 Filter Exp. OT
(mid, days) (s)
2014-06-20 21:22:56 0.68914 R 20*120 20.37 +/- 0.09
The photometry is based on star USNO-B1.0 1397-0294956 (RA 18:47:28.76 Dec
+49:43:44.5) assuming R=16.35.