TITLE: GCN CIRCULAR NUMBER: 31875 SUBJECT: GRB 220408A: Lowell Discovery Telescope Optical Observations DATE: 22/04/11 13:55:36 GMT FROM: Brendan O'Connor at UMD B. O'Connor (UMD, GWU), S.B. Cenko (UMD,NASA-GSFC), E. Troja (UTV), S. Dichiara (PSU), A. Kutyrev (UMD,NASA-GSFC), S. Veilleux (UMD) We observed GRB 220408A with the Large Monolithic Imager (LMI) on the 4.3m Lowell Discovery Telescope (LDT). Observations began on April 9, 2022 at 06:25:23 UT in r-band (~1.03 d after the GRB). At the location of the optical counterpart (Caputo et al., GCN 31848), we marginally detect a source with magnitude r~24.5 +/- 0.3 AB mag. This is likely dominated by the contribution from the host galaxy (Zhu et al., GCN 31864), and is consistent with fading of the earlier detection by Zhu et al. (GCN 31864). Magnitudes are calibrated against the PS1 catalog and are not corrected for Galactic extinction. We thank the staff of the Lowell Discovery Telescope for assistance with these observations.