GCN Circular 10883
Subject
GRB 100418A: late time optical observations
Event
Date
2010-06-25T16:45:00Z (15 years ago)
From
Vasilij Rumjantsev at CrAO <rum@crao.crimea.ua>
V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB
follow-up collaboration:
We observed the field of the Swift GRB 100418A (Marshall et al. GCN
10612) with Shajn telescope of CrAO between (UT) June, 11 20:07 --
21:50 under photometric weather conditions and mean seeing of about 2
arcsec. The preliminary photometry of the afterglow+host in a stacked
image based on USNO-B1.0 star 1014-0271368 (RA(J2000) = 17:05:26.42
Dec(J2000)= +11:27:32.9) assuming R=17.32 is following:
T0+ Filter, Exposure, mag.
(mid, d) (s)
53.9919 R 88x60 22.05 +/-0.07
The brightness of the host is less but compatible with early reported
magnitudes on May 14 (R = 21.86 +/-0.06; GCN 10783) and (Rc = 21.90
+/-0.03; GCN 10794)