GCN Circular 10478
Subject
GRB 100305A: Gemini z'-band observation
Date
2010-03-05T19:56:11Z (14 years ago)
From
Antonino Cucchiara at PSU <cucchiara@astro.psu.edu>
A. Cucchiara (PSU), report on behalf of a larger collaboration:
"We continued our observations of GRB 100305A with the Gemini-N
telescope mounted with the GMOS camera.
A sequence of z'-band images has been taken for a total exposure
time of 15 min.
No clear object is visible in the position of the optical afterglow
previously reported (GCN 10473) at the following 3-sigma upper limit:
z' > 23.42 mag
We also report a corrected error measure in our photometry.
The correct magnitude estimates at T0 + 2h are:
r' = 23.95 +- 0.30 mag
i' = 23.71 +- 0.06 mag
We apologize for any inconvenience this may have caused."