TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5243
SUBJECT: GCN 060607: Swift-UVOT obswervations. 
DATE:    06/06/07 23:43:44 GMT
FROM:    Samantha Oates at MSSL  <sro@mssl.ucl.ac.uk>

S. R. Oates (UCL-MSSL),  A. J. Blustin (UCL-MSSL), H. Z. Ziaeepour 
(UCL-MSSL) report on behalf of the Swift/UVOT team:

The Swift/UVOT began observing the field of GRB 060607 at 05:15:12 on 
2006-06-06, 179 s after the BAT trigger (Ziaeepour et al., GCN 5233). An 
optical counterpart was detected in the V-band at a position (RA,DEC) (21h 
58m 50.4s,  -22d 29' 47.4'') (J2000) to within 0.5 arcsec. The optical 
afterglow was detected in white, V, B and U filters. The non-detections in 
the UV bands is consistent with reported redshift z=3 (Ledoux et al., GCN 5237).

The photometry results are given for the 7 filters below:

Filter	  T_Start(s)  Exposure(s)  Magnitude/3sig_UL

V		179	486.9		15.35 +/-0.09
V		7880	127.1		18.16 +/-0.33
B		5833	194.9		19.13 +/-0.18
B		7265	192.5		19.48 +/-0.28
U		7061	187.8		18.87 +/-0.34
W1   		5429	1257		18.83 (3 sigma UL)
M2		6651    1075		20.47 (3 sigma UL)
W2		1843	383.1		19.97 (3 sigma UL)
WHITE		74	97.4		15.98 +/-0.15
WHITE		6037	188.4		18.89 +/-0.17

The values quoted above are not corrected for the expected Galactic 
extinction E(B-V)=0.03