GCN Circular 2463
GRB 031203: Optical/IR SMARTS Observations C. Bailyn, M. Buxton, B. Cobb, P. van Dokkum (Yale), J. S. Bloom (Harvard/CfA) and J. Espinoza (CTIO), part of the larger SMARTS consortium, report: "Using the ANDICAM instrument on the 1.3m telescope at CTIO, we obtained optical/IR imaging at the location of the INTEGRAL GRB 031203 (GCN #2459) starting at 4 December 2003 3h00m UT. Comparison of optical images obtained between UT=3:00 and UT=5:37 revealed no variable object down to I=19 mag. J and K band images were also obtained during this time, and show no anomalous objects when compared to the 2MASS survey. Owing to the heavy extinction towards this GRB---E(B-V) = 0.971 mag (Schlegel, Finkbeiner, & Davis ApJ 500, 525 1998)---red and infrared imaging is particularly encouraged." For more information on the SMARTS consortium see: http://www.astro.yale.edu/smarts/ This message may be cited.