TITLE: GCN GRB OBSERVATION REPORT NUMBER: 1175 SUBJECT: GRB011130 (XRF011130) SDSS PT i-band observations DATE: 01/12/05 02:51:41 GMT FROM: Don Lamb at U.Chicago B. C. Lee, D. L. Tucker, D. Q. Lamb, D. E. Vanden Berk, and E. Neilsen, on behalf of the SDSS GRB team, report: We observed the entire revised HETE-2 error circle for GRB011130 (XRF011130) (GCN 1169) using the SDSS 0.5-m "Photometric Telescope" (PT) at APO under clear skies and a bright moon on UTC 2001 December 2 from MJD 52245.208450 to 52245.301880. We took a series of eleven 180 second i-band exposures (41.5' x 41.5' field of view) centered on the reported location of XRF011130 (GCN 1169). We have coadded the 11 images and examined the region of the variable radio source reported by Frail (GCN 1173). We find an object with a peak approximately 2 sigma above noise and an estimated magnitude of i* = 20.5 +/- 0.5 at RA=03:05:24.96, DEC=+03:46:14.58 (RMS error of approximately 1 arcsec), consistent with the location of the variable radio source. Because the object is only margninally detected in the coadded image, is slightly below the limiting magnitude of the DPOSS plates, and has not been observed as part of the SDSS imaging survey, we do not know if it is variable. Additional observations are urged. A finding chart can be found at: http://sdss.fnal.gov:8000/grb/ (moved to http://home.fnal.gov/~bclee/grb/) This message may be cited. [GCN OPS NOTE (07 Dec 01): The new url was added.]