GCN Circular 11197
Subject
GRB 100901A: HCT optical observations
Date
2010-09-03T19:52:42Z (14 years ago)
From
D.K. Sahu at Indian Inst of Astrophysics,Bangalore <dks@iiap.res.in>
D.K. Sahu, Sonam Arora, N. Shantikumar Singh and Sreeja S. Kartha
(IIA, Bangalore) report.
We observed the optical afterglow of GRB 100901A (Immler et al., GCN 11159)
in Bessell V, R, and I bands with the 2m. Himalayan Chandra Telescope of
the Indian Astronomical Observatory, Hanle, India. Observations were made
between 18:43 UT and 19:50 UT on 02/09/2010. The optical afterglow was
detected in our individual frames of 300sec each in R and I bands.
The preliminary R and I magnitudes of the optical afterglow
calibrated using USNO B1.0 1127-0027231 reference
star (R=15.37, I=15.13) is as under:
Mid UT Exposure Filter Mag
18:50 3X300sec R 18.71 +/- 0.10
19:12 3X300sec I 17.51 +/- 0.15