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 220310B ( Fermi GBM team, GCN 31727) errorbox 553 sec after notice time and 582 sec after trigger time at 2022-03-10 03:04:50 UT, with upper limit up to 19.3 mag. The observations began at zenith distance = 45 deg. The sun altitude is -22.6 deg. The galactic latitude b = 14 deg., longitude l = 139 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1905827 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment | 642 | 2022-03-10 03:04:50 | MASTER-OAGH | (04h 14m 41.43s , +69d 34m 27.5s) | C | 120 | 18.8 | 642 | 2022-03-10 03:04:50 | MASTER-OAGH | (04h 13m 44.40s , +69d 58m 56.3s) | C | 120 | 19.0 | 793 | 2022-03-10 03:07:11 | MASTER- OAGH | (04h 14m 40.88s , +69d 35m 33.4s) | C | 140 | 18.8 | 793 | 2022-03-10 03:07:11 | MASTER-OAGH | (04h 13m 43.73s , +70d 00m 01.8s) | C | 140 | 19.1 | 970 | 2022-03-10 03:09:52 | MASTER- OAGH | (04h 14m 48.31s , +69d 34m 34.1s) | C | 170 | 18.9 | 970 | 2022-03-10 03:09:52 | MASTER-OAGH | (04h 13m 51.11s , +69d 59m 04.3s) | C | 170 | 19.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.