TITLE: GCN GRB OBSERVATION REPORT NUMBER: 5296 SUBJECT: GCN 060708: Swift-UVOT Observations DATE: 06/07/08 21:02:29 GMT FROM: Patricia Schady at MSSL/Swift P. Schady (UCL-MSSL), A. Moretti (INAF-OAB) report on behalf of the Swift/UVOT team: The Swift/UVOT began observing the field of GRB 060708 at 12:17:11 UT on 2006-07-08, 72 s after the BAT trigger (Moretti et al., GCN 5292). An optical counterpart is clearly detected in the white, V, B and U-bands, and is detected in the UVW1 filter at the 2sigma level. The position of the optical afterglow lies within the XRT error circle at RA,Dec (J2000) = 00 31 13.82, -33 45 32.4 to within 0.5 arcsec. The lack of a detection in the two bluest UV filters suggests a photometric redshift of z ~ 1.8. The photometry results are given for the 7 filters below: Filter T_Obs(s) Exposure(s) Magnitude/3sig_UL WHITE 122 97 16.81 +/- 0.07 WHITE 5923 196 19.23 +/- 0.32 V 294 52 15.53 +/- 0.16 V 4901 197 19.78 +/- 0.63 B 4287 196 19.60 +/- 0.23 B 5719 193 20.27 +/- 0.65 U 4082 192 18.85 +/- 0.17 U 5514 189 18.78 +/- 0.20 W1 3776-5600 392 20.18 +/- 0.52 (coadded) M2 3568-5392 385 20.00 (3 sigma UL) W2 4592-6352 353 19.77 (3 sigma UL) The values quoted above are not corrected for the expected Galactic extinction E(B-V)=0.011