GCN Circular 12508
A. N. Morgan (UC Berkeley) reports: We observed the field of GRB 111029A (Troja et al., GCN 12498) with the 1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at 2011-10-29 09h47m33 UT, ~2.9 minutes after the Swift Trigger. In mosaics taken simultaneously in the J, H, and Ks filters, we do not detect any source within the enhanced XRT error circle (Evans et al., GCN 12502) in the coaddition of the first few minutes of data nor the first hour. The preliminary photometry yields: post burst t_mid(s) exp.(s) filt U. Limit (3 sig) 551 351 J > 17.9 551 351 H > 16.6 551 351 Ks > 15.7 1837.5 1919 J > 18.5 1837.5 1919 H > 17.5 1837.5 1919 Ks > 16.6 All magnitudes are given in the Vega system, calibrated to 2MASS. No correction for Galactic extinction has been made to the above reported values.