GCN Circular 2639
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. This message may be cited.