GCN Circular 16148
Subject
GRB 140423A: ISON-MN early photometry and correction to the GCN circ. 16143
Date
2014-04-23T11:01:48Z (10 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
L. Elenin (KIAM), A. Volnova (IKI), I. Molotov (KIAM), A. Pozanenko (IKI)
report on behalf of larger GRB follow-up collaboration:
After detection of the optical afterglow of GRB 140423A (Elenin et al., GCN
16143; Kaur et al., GCN 16144; Ferrante et al., GCN 16145) and X-ray
afterglow (Burrows et al., GCN 16146) we report initial photometry of our
first images taken with ISON-NM observatory:
UT start t-T0 Exp. Filter OT
(mid.,days) (s)
09:01:18 0.02043 30 Clear 17.11 +/- 0.17
09:06:49 0.02426 30 Clear 17.60 +/- 0.21
The photometry is based on star SDSS J130858.37+494547.9 (assuming R =
15.418 +/- 0.018).
The finding chart of GRB 140423A afterglow can be found in
http://grb.rssi.ru/GRB140423A/GRB140423A_ISON-NM_fc.png
Also we report the corect time of observation of the first image in GCN
16143. It should be April, 23, (UT) 09:01:03.
We apologize for the misprint.
