TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  2639
SUBJECT: GRB 040810: Optical observations of a limited region
DATE:    04/08/10 21:58:37 GMT
FROM:    Paul Price at IfA,UH  <price@ifa.hawaii.edu>

P.A. Price (IfA, University of Hawaii), M. Hauser (Landessternwarte
Heidelberg-K\"onigstuhl), G. P\uhlhofer (MPIK) and S.J. Wagner
(Landessternwarte Heidelberg-K\"onigstuhl) report:

We observed a small number (4) of 18 arcmin square fields within the
error box of GRB 040810 (HETE #3489/4) using the 40-inch telescope at
Siding Spring Observatory in R-band at mean epoch 2004 Aug 10.761,
before other time-sensitive observations became of high priority.  These
fields are centered at J2000 coordinates: 23:52:00 -35:04:25 ; 23:52:00
-34:49:22 ; 23:53:30 -35:11:55 ; 23:54:31 -34:56:54.

We do not identify any optical afterglow upon manual comparison with the
Digitised Sky Survey 2 F plates.  We estimate that the limiting
magnitude of these observations are R ~ 18 mag from rough calibration
with the USNO-A2.0 catalogue.

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