GCN Circular 2365
D.B. Fox and M.P. Hunt (Caltech) report on behalf of the Caltech-NRAO GRB Collaboration: "We have observed the HETE-2 SXC localization region for GRB030823 with the 200-inch Hale Telescope and Large-Format Camera on Mt. Palomar on August 24.15 and August 25.23 UT. Our dithered 4x300s images cover the full localization region on each night at mean epochs of 0.78 and 1.86 days after the burst, respectively. PSF-matched image subtraction reveals no bright, variable sources within the SXC error box. We therefore derive a limit of R>22.5 on the brightness of any variable optical counterpart at the epoch of our first observation."