TITLE: GCN CIRCULAR NUMBER: 5757 SUBJECT: GRB061025: Swift/UVOT observations DATE: 06/10/26 14:09:09 GMT FROM: Shashi Pandey at MSSL S. B. Pandey (UCL-MSSL) & M. Stamatikos (NASA-GSFC), on behalf of the Swift UVOT team. The Swift/UVOT began observing the field of long duration GRB 061025 around ~1.5 hours after the INTEGRAL trigger at 18:35:50 UT on October 25 (Mereghetti et al., GCN 5751). We do not find any source in the co-added UVOT observations within the XRT position reported by Mineo et al. (GCN 5753). Following are the 3-sigma magnitude upper limits from the observations. Filter T_start T_stop Exposure (s) mag, 3 sigma UL V 11282 39711 875 20.5 B 11112 38644 1082 21.4 U 9302 38427 1267 21.2 UVW1 8875 38210 2581 21.4 UVM2 11318 40316 2468 22.0 UVW2 11150 39494 3524 22.4 T_start and T_stop are calculated from the time of the burst. The upper limits are not corrected for Galactic extinction E(B-V) = 0.047 mag along the line of sight to the burst. [GCN OPS NOTE(26oct06): Per author's request, the typo 'Minoe' was changed to 'Mineo'.]