TITLE: GCN CIRCULAR NUMBER: 7217 SUBJECT: GRB 080121: Swift/UVOT upper limits DATE: 08/01/25 14:06:29 GMT FROM: Antonino Cucchiara at PSU A. Cucchiara (PSU), P. Schady (MSSL) report on behalf of the Swift-UVOT team: The Swift/UVOT observed the field of GRB080121 (trigger #301491) starting 2.3 days after the BAT detection (J. R. Cummings et al. 2008, GCN Circ. 7209). We do not find any new source in any of the UVOT coadded observations inside the BAT error circle. The 3-sigma upper limits (in the UVOT photometric system, Breeveld et al., GCN Circ. 6614) are listed. Filter Tstart Exp Magnitude (s) white 2.3 days 2015 >22.25 v 2.3 days 2268 >20.73 uvm2 3.4 days 1491 >21.13 The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 0.02 mag in the direction of the burst (Schlegel et al. 1998).