GCN Circular 9440
Subject
GRB 090530: PAIRITEL NIR Detections
Event
Date
2009-05-30T04:30:03Z (17 years ago)
From
Adam Morgan at U.C. Berkeley <qmorgan@gmail.com>
A. N. Morgan, D. A. Perley, J. S. Bloom, (UC Berkeley), and D.
Starr (UCB, LCOGT) report:
We observed the field of GRB 090530 (Cannizzo et al., GCN 9438) with
the 1.3-m PAIRITEL located at Mt Hopkins, Arizona. Observations began
at 2009-05-30 03:19:30 UT, 72 seconds after the Swift Trigger. We
detect the optical afterglow (Cannizzo et al., GCN 9438, Flewelling et
al., GCN 9439) in mosaics taken simultaneously in the J, H, and Ks
filters.
The preliminary photometry yields:
post_burst
t_mid (min) exp(s) filt mag merr
8.33 424 J 16.4 0.1
8.33 424 H 15.4 0.1
8.33 424 Ks 15.0 0.1
All magnitudes given in the Vega system, calibrated to 2MASS. No
correction for Galactic extinction has been made to the above reported
values. Observations are ongoing.
[GCN OPS NOTE(30may09); The typo in the Subject line was changed
from "090515" to "090530".]