GCN Circular 6540
P.Schady (MSSL-UCL) and N. Lyons (Leicster) report on behalf of the UVOT team Swift/UVOT began observing the field of the INTEGRAL burst GRB070615 10.7hrs after the IBAS trigger in the V and white filters. No afterglow is detected in any of the individual or co-added observations down to the following 5-sigma upper limits: Filter T_mid (s) Exp (s) UL Mag (5sig) ==================================== V 46354 2887 19.59 White 51435 36 18.07 ==================================== where T_mid corresponds to weighted mid time of the observation. The values quoted above are not corrected for the expected Galactic reddening of E(B-V) = 0.12 mag (Schlegel et al. 1998).