GCN Circular 10407
Subject
GRB 100212A: LOAO R-band Detection/V-band Observation
Date
2010-02-13T11:04:10Z (14 years ago)
From
Myungshin Im at Seoul Nat U <mim@astro.snu.ac.kr>
M. Im (CEOU/Seoul National Univ) and Y. Urata (NCU)
on behalf of EAFON team.
We observed GRB100212A (Grupe et al. GCN 10401) in R and V
using the 1.0m telescope at Mt. Lemmon (Arizona, US) operated by
the Korea Astronomy Space Science Institute.
The observation started at Feb. 13, 02:05:14 UT, about 12 hours
after the BAT trigger.
The stacked R-band image shows a marginal detection of
the afterglow with R ~ 22.5 +- 0.2 mag, at the location reported by
Malesani et al. (GCN 10402). The mid-point for the R-band imaging
is 02:17:36 UT. The object does not appear in a stacked V-band
image, which was taken right after the R-band observation.
Our obseravation shows that the afterglow candidate faded
significantly since the report by Malesani et al. (GCN 10402),
confirming that this is indeed a GRB afterglow.
The photometry was calibrated against the USNO star (GCN 10402).
We thank the LOAO operator, J. Yoon for her assistance of this
observation.