TITLE: GCN CIRCULAR NUMBER: 11336 SUBJECT: GRB 101011A: Zadko observatory - Gingin optical observations DATE: 10/10/12 09:07:35 GMT FROM: Bruce Gendre at ASDC M. Laas-Bourez(UWA/ICRAR), D. Coward(UWA), D. Blair (UWA), B. Gendre (ASDC/OAR), M. Boer (OHP-CNRS), A. Klotz (CESR-UPS-CNRS), P. Thierry (CESR-UPS-CNRS) report: We imaged the field of GRB 101011A detected by SWIFT (trigger 436094) with the Zadko robotic telescope (D=100cm) located at the observatory - Gingin, Australia. The observations started 3932.8s after the GRB trigger (3910s after the notice). The elevation of the field increased from 55 degrees above horizon and weather conditions were good with a high level of humidity. 30 images have been maded with a duration of 180.0s each (see the description in Klotz et al., 2006, A&A 451, L39). At the position of the XRT afterglow (Evans et al., GCN 11333), we do not detect any source with a limiting magnitude of g> 19.5 on the single images. We co-added a series of exposures between t0+3932.8s to t0+9869.4s We do not detect any afterglow, with a limiting magnitude of g> 21.5 Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction. N.B. Galactic coordinates are lon=283.3069 lat=-45.3657 This message may be cited.