TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1208 SUBJECT: GRB 011130: Optical Observations of X-ray and Radio Sources DATE: 01/12/17 19:20:38 GMT FROM: Jules Halpern at Columbia U. J. P. Halpern, N. Mirabal, E. V. Gotthelf (Columbia), & J. Kemp (Joint Astronomy Centre/Columbia) report on behalf of the MDM Observatory GRB follow-up team: "R-band images of this field taken on three nights and previously described in GCNs #1186 and #1187 also cover the positions of the two radio sources described by Frail (GCN #1207). Optical images of both sources are shown on the web page given below. Neither show evidence of variability. The point radio source corresponding to CXOU J030532.4+034301 is approximately equidistant (3") from three optical objects. It is not clear which, if any, is the counterpart. Examination of the I-band images obtained on the MDM 1.3m on Dec. 2.30 UT (GCN #1177) under bright lunar conditions shows marginal detections of the two brightest Chandra sources on the list of Ricker et al. (GCN #1185), CXOU J030527.9+034657 and CXOU J030532.5+035140. The combined I-band image is slightly deeper than the POSS-II IVN plate, but does not provide any evidence for variability of the detected objects. In addition, we note that examination of blue and red POSS II plates shows blue objects at the locations of CXOU J030532.5+035140 and CXOU J030534.3+034958. Details of MDM images are posted at http://www.astro.columbia.edu/~jules/grb/011130/ This message may be cited."