GCN Circular 34112
R. Strausbaugh (University of Minnesota), A. Cucchiara (NASA) report on behalf of a larger collaboration: We observed the GRB 230628E (Klingler et al., GCN 34110) field with the LCOGT 1-meter Sinistro instrument at the Cerro Tololo Interamerican Observatory, Chile site, on June 28, from 23:08 to 23:40 UT (corresponding to 0.70 to 1.23 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 error region (Klingler et al., GCN 34110) in either band. The following upper limits are calculated using the PanSTARRS catalog as reference: r > 19.2 i > 19.0 These magnitudes are not corrected for galactic extinction.