GCN Circular 1279
Subject
GRB 020305: Optical Observations
Date
2002-03-19T23:36:55Z (23 years ago)
From
Daniel E. Reichart at U.Chicago/Astro <reichart@oddjob.uchicago.edu>
M. Lopez-Morales, J. C. Clemens (UNC-CH), and D. E. Reichart (Caltech) report:
On March 5, we observed the entire 50 arcmin diameter error circle of
GRB 020305 (HETE 1939; GCN 1262) with the automated 8" Pisgah Survey Telescope
at PARI (Pisgah Astronomical Research Institute) in Rosman, North Carolina.
Observations began 15.8 hours after the burst. Visual comparison with the DSS
revealed no new sources at that time.
At the location of the candidate afterglow (GCN 1267), we are partially
contaminated by light from a nearby, bright (I = 14.7 +- 0.1 mag) star.
Consequently, we reimaged the field on March 15. Comparison of aperture
photometry between the two epochs allows us to place the following limits at
the location of the candidate afterglow on March 5: I > 17.6 mag (1 sigma),
I > 16.8 mag (2 sigma), and I > 16.4 (3 sigma).