GCN Circular 6391
Subject
GRB 070508, SMARTS optical afterglow observation
Event
Date
2007-05-08T21:34:04Z (18 years ago)
From
Bethany Cobb at Yale U <cobb@astro.yale.edu>
B. E. Cobb (Yale), part of the larger SMARTS consortium, reports:
Using the ANDICAM instrument on the 1.3m telescope at CTIO, we
obtained optical imaging of the error region of GRB 070508
(GCN 6383, Grupe et al.) with a mid-exposure time of
2007-05-08 06:25 UT (~2.1 hrs post-burst). The total summed exposure
time amounted to 36 minutes in I.
A source is detected at the UVOT afterglow coordinates (GRB 6383, Grupe et
al.) with a magnitude of I=20.7+/-0.3, calibrated using USNO-B1.0 values.