TITLE:   GCN CIRCULAR
NUMBER:  2807
SUBJECT: GRB 041015: Optical limit at Osaka University
DATE:    04/10/15 16:58:27 GMT
FROM:    Ken ichi Torii at RIKEN  <torii@crab.riken.go.jp>

K. Torii and Yuuichi Fukazawa (Osaka University)
report:

 The entire error region of GRB 041015 (Mereghetti, et al., GCN 2805)
was observed with the 14-inch Automated Response Telescope at Osaka
University. The observation started at 2004 October 15 13:08:48
UT (59-s after the IBAS packet time) and 60-s integration was repeated.

 We stacked 20 unfiltered images obtained between 13:10 and 13:31 UT
and compared it with the USNO-A2.0(R) catalog. No new source brighter
than R~17.7 mag was identified.

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