TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5100 SUBJECT: GRB 060510B: Super-LOTIS Observations DATE: 06/05/10 10:22:13 GMT FROM: Grant Williams at Steward Observatory G. G. Williams (MMTO) and P. A. Milne (Steward Observatory), on behalf of the Super-LOTIS Collaboration, report: The robotic 0.6-m Super-LOTIS telescope was manually triggered and began observing the error box of GRB 060510B (Swift Trigger 209352, GCN 5096) at 08:50:00.7 UT, ~28 minutes after the burst. Our initial observations include 5 x 10s exposures, 5 x 20s exposures, and 30 x 60s exposures, all in the R-band. We do not detect the afterglow reported by Mirabal et al. (GCN 5097) or any other new source within the XRT error box in our first several 60-second exposures to the following 3-sigma limiting magnitude estimated using nearby USNO-B1.0 stars: t obs (UT) exp t (s) t-t_0 (s) Limit -------------------------------------------------------- 08:53:41 60 1877 R > 18.6 Additional observations and analysis are ongoing.