GCN Circular 33776
R. Strausbaugh (University of Minnesota), A. Cucchiara (NASA) report on behalf of a larger collaboration: We observed the GRB 230510A (Eyles-Ferris et al., GCN 33752) field with the LCOGT 1-meter Sinistro instrument at the Teide Observatory, Tenerife site, on May 11, from 03:03 to 03:36 UT (corresponding to 14.95 to 15.50 hours from the GRB trigger time) with the SDSS r and i filters. We performed a series of 3x300s exposures in each band. We do not detect a source within the Swift-XRT enhanced error region (Evans et al., GCN 33756) in either band, consistent with fading from the optical afterglow candidate (Jiang et al., GCN 33761). The following upper limits are calculated using the PanSTARRS catalog as reference: r > 21.5 i > 19.8 These magnitudes are not corrected for galactic extinction.