TITLE:   GCN CIRCULAR
NUMBER:  11354
SUBJECT: GRB 101017A: Swift/UVOT Observations
DATE:    10/10/18 14:20:49 GMT
FROM:    Mike Siegel at PSU/Swift MOC  <siegel@astro.psu.edu>

M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:

The Swift/UVOT began settled observations of the field of
GRB 101017A 88s after the BAT trigger (Siegel et al.,
GCN Circ. 11345).  The source reported by Siegel et al.
is confirmed in the u and white filters but has not been detected
since the first orbit.

The 3-sigma upper limits for the finding chart (fc) and
summed exposures are reported below:

FILTER     T_start(s)  T_stop    Exposure     Mag/3uL
========================================================
white (fc)     88        238      147       19.85+-0.22
white          88       1724      409       20.09+-0.17
white        5660       7296      393         >21.03
v             630       1773      136         >18.81
v            6071      11723     1158         >19.93
b             556       1699      116         >19.66
b            5456       7091      393         >20.30
u             301        550      245       19.15+-0.23
u             301       1675      343       19.22+-0.20
u            5250       6886      393         >19.94
uvw1          679       1648      116         >19.22
uvw1         5046      13365     1112         >20.60
uvm2          654       1797      116         >19.08
uvm2         6276      12628     1082         >20.63
uvw2          605       1749      136         >19.52
uvw2         5866       7502      393         >20.22
=======================================================

The above magnitudes are not corrected for the Galactic extinction
corresponding to a reddening of E_{B-V} = 0.17 (Schlegel et al.,
1998, ApJS, 500, 525). The photometry is on the UVOT photometric
system described in Poole et al. (2008, MNRAS, 383, 627).