GCN Circular 14077
Subject
GRB 121211A: RATIR Optical and NIR Observations
Date
2012-12-13T04:12:26Z (11 years ago)
From
Nat Butler at UC berkeley <natxbutler@gmail.com>
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC),
William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB),
Ori Fox (UCB) J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino
Cucchiara (UCSC), Eleonora Troja (GSFC), Enrico Ramirez���Ruiz (UCSC),
Jos�� A. de Diego (UNAM), Leonid Georgiev (UNAM), Jes��s Gonz��lez
(UNAM), Carlos Rom��n-Z����iga (UNAM), Neil Gehrels (GSFC), and Harvey
Moseley (GSFC) report:
We observed the field of GRB 121211A (Mangano, et al., GCN 14057) with
the Reionization and Transients Infrared Camera (RATIR; www.ratir.org)
on the 1.5m Harold Johnson Telescope at the Observatorio Astron��mico
Nacional on Sierra San Pedro M��rtir from 2012 Dec 12.48 to 2012 Dec
12.58 UTC (21.8 to 24.1 hours after the BAT trigger), obtaining a
total of 1.8 hours exposures in the r' and i' bands and 0.67 hours of
exposure in the Z, Y, J, and H bands.
In comparison with SDSS DR8 and 2MASS, we derive the following
detections and upper limits (3-sigma) in the AB magnitude system:
r' 22.9 +/- 0.2
i' 23.2 +/- 0.2
Z 22.1 +/- 0.4
Y >21.3
J >21.9
H >21.1
These magnitudes are not corrected for Galactic extinction in the
direction of the GRB.
We thank the staff of the Observatorio Astron��mico Nacional in San Pedro M��rtir.