TITLE: GCN CIRCULAR NUMBER: 5766 SUBJECT: GRB 061028: Swift/UVOT Observations DATE: 06/10/28 14:07:19 GMT FROM: Samantha Oates at MSSL S.R. Oates (UCL-MSSL), T. Sakamoto (NASA/ORAU) report on behalf of the Swift/UVOT team: The Swift/UVOT began observing the field of GRB 061028 at 01:29:32 on 2006-10-28, 190s after the BAT trigger (Sakamoto et al., GCN 5762). No new source was detected within the XRT error circle in coadded images in any filter down to the following 3-sigma magnitude upper limits: Filter Start End Exposure 3-sigma UL ------------------------------------------------ V 190 6596 747 20.6 B 410 6131 274 20.3 U 386 5926 313 19.9 W1 362 5722 313 18.5 M2 338 5517 313 19.4 W2 438 6541 471 19.3 WHITE 208 6335 443 18.9 ------------------------------------------------ These upper limits are not corrected for Galactic extinction E(B-V) = 0.16.