TITLE: GCN CIRCULAR NUMBER: 12622 SUBJECT: GRB 111204A: GROND Observations DATE: 11/12/05 08:13:42 GMT FROM: Alexander Kann at TLS Tautenburg D. A. Kann (Tautenburg Observatory), F. Olivares E., and J. Greiner, (both MPE Garching) report on behalf of the GROND team: We observed the field of GRB 111204A (Swift trigger 509018; Sonbas et al., GCN #12612) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP, 120, 405) mounted at the 2.2 m ESO/MPI telescope at La Silla Observatory (Chile). Observations started on December 5, 2011, at 00:38 UT, 11 hours after the GRB trigger, during twilight. They were performed at an average seeing of 1".1 and at an airmass of 1.2 - 2.2. Based on co-added images of 5900 s integration time in g'r'i'z' and 4800 s in JHK, centered 0.5253 days after the trigger, no new sources within the enhanced 1".9 XRT error circle (RA = 22:26:30.81, Dec. = -31:22:29.3; Beardmore et al., GCN #12614, updated version from the Enhanced XRT Position page) are detected, and the following specific upper limits (all in the AB magnitude system) are found: g' > 24.5 r' > 24.9 i' > 24.4 z' > 24.0 J > 22.3 H > 21.6 K > 20.5 Magnitudes were calibrated against GROND zeropoints in g'r'i'z' and 2MASS field stars in JHK. No corrections for the expected Galactic foreground extinction were made, which correspond to a reddening of E(B-V)=0.012 mag in the direction of the burst (Schlegel et al. 1998).