TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1137 SUBJECT: Non-triggered burst 011030 ("GRB 011030") DATE: 01/11/09 14:23:23 GMT FROM: Shri Kulkarni at Caltech J. S. Bloom, A. Gil de Paz, F. A. Harrison and S. R. Kulkarni (Caltech) report: "Optical imaging observations were carried out at the Palomar 60-inch telescope on 9 November, 2001 (UT) by Armando Gil de Paz. Six images of 600 s duration were observed under non-photometric conditions. We found no optical counterpart to a limiting magnitude of R=22.9 magnitude (5 sigma). Our photometry is based on assuming R=17.3 for the USNO A2.0 star 6-arcsecond to the northeast of the radio position. The astrometry is with respect to more than 200 USNO A2.0 stars and the overall astrometric accuracy is about 0.25 arcseconds (in each coordinate). We also note that the Galactic extinction towards this direction is high (A_R about 1 magnitude)."