GCN Circular 8024
W. Li, R. Chornock, D. A. Perley, J. S. Bloom, and A. V. Filippenko, University of California at Berkeley, on behalf of the KAIT GRB team, report: The robotic 0.8-m KAIT located at Lick Observatory responded to GRB 080727B (Immler et al. GCN 8022) automatically on July 27 starting at 08:14:12 UT (48 seconds after the burst). A series of images were taken in the V, I, and clear filters. We detected a fading new object at the following location: RA (J2000) = 18h27m26.05s +/- 0.3" Dec (J2000) = +01d09'47.7" +/- 0.3" , suggesting that this is the optical afterglow of the GRB. We report the following preliminary photometry (calibrated to USNO B1): UT start exptime filter mag err 08:14:12 2 s clear 18.20 0.16 08:14:17 2 s clear 18.38 0.16 08:14:20 2 s clear 18.45 0.23 The power-law decay index between t = 49 s and 72 s after the burst is -1.44 +/- 0.59. Further analysis is ongoing.