GCN Circular 18295
Subject
GRB150910A: P60 Observations
Date
2015-09-12T16:15:10Z (9 years ago)
From
Daniel Perley at Caltech <dperley@astro.caltech.edu>
D. A. Perley (DARK) and S. B. Cenko (NASA/GSFC) report:
We observed the location of GRB 150910A (Pagani et al., GCN 18264) using
the robotic Palomar 60-inch telescope on two epochs during the night of
2015-09-11 UT, and an additional epoch during the night of 2015-09-12
UT. During each epoch we acquired 3x180s of imaging in each of the g',
r', and i' filters.
The optical afterglow (Pagani et al.; Zheng and Filippenko, GCN 18265)
is detected in each observation. Preliminary photometry relative to
SDSS yields:
t_start(d) filt mag emag
0.973 i = 21.24 +/- 0.12
0.980 g = 21.54 +/- 0.06
0.989 r = 21.35 +/- 0.08
1.067 i = 21.28 +/- 0.07
1.074 g = 21.85 +/- 0.06
1.081 r = 21.50 +/- 0.06
2.060 i = 22.21 +/- 0.17
2.067 g = 22.66 +/- 0.14
2.074 r = 23.03 +/- 0.26