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 GRB220521.98 (trigger No 674868783,22h 03m 55.92s , -08d 04m 01.2s, R=32.7) errorbox 34381 sec after notice time and 34419 sec after trigger time at 2022-05-22 09:06:37 UT, with upper limit up to 17.7 mag. The observations began at zenith distance = 68 deg. The sun altitude is -32.1 deg. The galactic latitude b = -46 deg., longitude l = 51 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1980507 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment | 34509 | 2022-05-22 09:06:37 | MASTER- OAGH | (22h 17m 01.29s , +05d 23m 56.7s) | C | 180 | 16.7 | 34509 | 2022-05-22 09:06:37 | MASTER-OAGH | (22h 17m 22.89s , +04d 59m 38.4s) | C | 180 | 17.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.