GCN Circular 10520
S. R. Oates (MSSL-UCL), M. De Pasquale (MSSL-UCL) and M. Stamatikos (OSU/NASA/GSFC) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 100316D 148s after the BAT trigger (Stamatikos et al., GCN Circ. 10496). Coincident with the refined Swift XRT error circle (Starling et al. GCN Circ. 10519), we detect the DSS galaxy, which hosts the sources A and B (Vergani et al. GCN Circ. 10512, 10513), but we are unable to resolve it. Our photometry, performed on 3ks of data in the 7 UVOT filters, shows no change larger than 1 sigma in the flux of this DSS galaxy.