TITLE: GCN CIRCULAR NUMBER: 31797 SUBJECT: GRB 220325A: Tautenburg observations DATE: 22/03/26 20:47:50 GMT FROM: Ana Nicuesa at TLS Tautenburg A. Nicuesa Guelbenzu, S. Klose, B. Stecklum, S. Melnikov, and U. Laux (all Tautenburg) report: We observed the field of GRB 220325A (Ferro et al. GCN 31787) with the Tautenburg 1.34m Schmidt telescope equipped with the TAUKAM 6k x 6k CCD camera. Observations consisted of 3x3 min exposures using the Sloan r, i, and z-band filter. The airmass was 2.1, the seeing relatively poor (3 arcsec). Inside the enhanced XRT error circle (Osborne et al., GCN 31790) we do not find any source down to the following magnitudes: r > 20.7 mag (AB, 3 sigma), mean time: 2022-03-26, 03:05:34 UT, i > 20.6 mag (AB, 3 sigma), mean time: 2022-03-26, 03:16:22 UT, z > 19.7 mag (AB, 3 sigma). mean time: 2022-03-26, 03:27:10 UT, calibrated against the Pan-STARRS catalog.