GCN Circular 32360
D. Turpin (CEA), C. Adami (LAM), B. Schneider, E. Le Floc�h (CEA), S. Basa (LAM) report on behalf of a larger collaboration: We observed the field of GRB 220708B (Tohuvavohu et al. GCN 32345, Kobayashi et al. GCN 32356, Frederiks et al. GCN 32358) using the T193cm telescope at Observatoire de Haute-Provence (France) equipped with the MISTRAL spectro-imager. Six exposures (6x600s) were obtained in the r band using the bleu MISTRAL set-up from 2022 08 Jul 20:55:39 UT to 2022 08 Jul 22:14:27 UT (mid time ~19.5h after trigger). In the combined frame, we do not detect any source within the 4 arcsec error circle of the XRT position (Osborne et al. GCN 32350) down to the following 3-sigma limit: r > 22.3 mag (AB) The photometric calibration was performed using nearby stars from the PanSTARRS catalog. The magnitude is not corrected for Galactic extinction and it is consistent with the non-detections reported by Jiang et al. (GCN 32355). We express our deepest thanks to the Observatoire de Haute-Provence for its support, in particular to St�phane Favard and J�r�me Schmitt.