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TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 2250
SUBJECT: GRB 030416: Optical Observations
DATE: 03/05/27 15:19:05 GMT
FROM: Jane Moran at U.North Carolina <moranj@physics.unc.edu>
A. Henden, J. Silvay, J. Moran, R. Soule, D. Reichart, J. Schaefer, R.
Canterna, and B. Scoggins report on behalf of the USNO, UWYO, and UNC GRB
teams of the FUN GRB collaboration:
We observed the entire 14 arcminute diameter error circle of XRF 030416
(Jernigan et al., GCN 2209) in BVRcIc beginning 15.4 hours after the burst,
despite a bright moon. We report the following limiting magnitudes:
Start Start Time Filter Integration Limiting Telescope Calibration
Date Since GRB Time (sec) Magnitude Catalog
(hours) x Pointings (3 sigma)
Apr 17.103 15.391 Rc 6000 x 1 19.8 0.6-m RBO* USNO A2.0
Apr 17.143 16.361 B 300 x 1 20.1 1.3-m USNO USNO A2.0
Apr 17.149 16.502 V 300 x 1 20.9 1.3-m USNO ACT
Apr 17.155 16.643 Rc 300 x 1 20.4 1.3-m USNO USNO A2.0
Apr 17.160 16.784 Ic 300 x 1 19.9 1.3-m USNO USNO B1.0
Apr 20.143 88.454 Rc 2160 x 1 22.3 1.3-m USNO USNO A2.0
* RBO = Red Buttes Observatory
Using the image subtraction routine ISIS2 (Alard 2000, A&AS, 114, 363), we
find no transient sources in either of our Rc images of April 17th when
compared to our Rc image of April 20th.
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