TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  5109
SUBJECT: GRB 060510B: Swift/UVOT Upper Limits
DATE:    06/05/10 20:27:52 GMT
FROM:    Stephen Holland at USRA/NASA/GSFC/SSC  <sholland@milkyway.gsfc.nasa.gov>

GRB 060510B: Swift/UVOT Upper Limits

S. T. Holland (NASA/GSFC & USRA) reports on behalf of the Swift/UVOT
team:

      The Swift UVOT began observing GRB 060510B (trigger #209351,
Krimm et al., GCN Circular 5096) 111 seconds after the BAT trigger.
No optical afterglow is detected at the location of the optical
afterglow (Mirabal & Halpern 2006, GCN Circular 5097).  The lack of
detection in any UVOT filter is consistent with the burst having a
redshift of z = 4.9 (Price 2006, GCN Circular 5104).

          Midpoint   Coadded    Upper
Filter     Time     Exposure   Limit
           (sec)      (sec)   (3 sigma)
V          1034       1598      21.2
B          5141        403      21.4
U          4950        433      21.1
UVW1       4736        413      20.6
UVM2       4852       1056      20.9
UVW2       5446        197      19.7
White       479        699      21.9

No correction has been made for the Galactic reddening of to E(B-V) =
0.04 mag (Schlegel et al. 1998) along the line of sight to GRB