TITLE:   GCN CIRCULAR
NUMBER:  7827
SUBJECT: GRB 080603B: PAIRITEL infrared detection
DATE:    08/06/05 22:02:59 GMT
FROM:    Daniel Perley at U.C. Berkeley  <dperley@astro.berkeley.edu>

A. A. Miller, J. S. Bloom, and D. A. Perley (UC Berkeley) report:

We observed the optical afterglow of GRB080603B (Mangano et al., GCN 
7794) with the 1.3m Peters Automated Infrared Imaging Telescope 
(PAIRITEL) starting 7.66 hours post trigger on June 04, 2008 UT. We 
detected the afterglow in a 2291 sec mosiac of 7.8 sec simultaneous 
exposures in the J,  H, and Ks filters. Preliminary photometry for the 
afterglow in exposures beginning on Jun 04.14 UT yields J = 17.9 +- 0.1, 
H = 17.2 +- 0.1, and Ks = 16.7 +- 0.15, calibrated to the 2MASS system.