GCN Circular 26147
S.Dichiara (UMD, NASA-GSFC) and E. Troja (UMD, NASA-GSFC) report on behalf of a larger collaboration: We observed the field of the short duration GRB 191031D (Fermi GBM Team, GCN Circ. 26111; D'Elia et al., GCN Circ. 26112) with the Gemini North 8-meter telescope located on Mauna Kea, beginning on 2019-11-02 04:43:08 UT, approximately 1.3 d post-burst. We obtained a series of 6x120s r-band images using the Gemini Multi-Object Spectrograph (GMOS). No credible counterpart is detected within the enhanced X-ray position (Osborne el al., GCN 26117) down to r > 25 AB mag, not corrected for Galactic extinction. We thank S. Stewart and the Gemini North staff for executing these observations.