Аннотация:MASTER-OAGH robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) started inspect of the Fermi GRB 220525A ( Fermi GBM team, GCN 32112) errorbox 1 days 35557 sec after notice time and 1 days 35599 sec after trigger time at 2022-05-26 10:04:13 UT, with upper limit up to 17.2 mag. The observations began at zenith distance = 82 deg. The sun altitude is -24.1 deg. The galactic latitude b = -44 deg., longitude l = 126 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1984418 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment | 122089 | 2022-05-26 10:04:13 | MASTER- OAGH | (00h 59m 08.17s , +16d 24m 55.4s) | C | 180 | 15.5 | 122089 | 2022-05-26 10:04:13 | MASTER-OAGH | (00h 59m 38.00s , +16d 01m 05.6s) | C | 180 | 17.0 | 122701 | 2022-05-26 10:14:25 | MASTER-OAGH | (00h 59m 06.62s , +16d 25m 33.8s) | C | 180 | 16.1 | 122701 | 2022-05-26 10:14:25 | MASTER-OAGH | (00h 59m 35.09s , +16d 00m 35.7s) | C | 180 | 17.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.