Аннотация:MASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) was pointed to the Swift GRB220506.51 (trigger No 1105560,20h 00m 15.10s , +34d 54m 22.3s, R=0.05) errorbox 57 sec after notice time and 141 sec after trigger time at 2022-05-06 12:11:20 UT, with upper limit up to 12.2 mag. Observations started at twilight. The observations began at zenith distance = 83 deg. The sun altitude is -10.7 deg. The galactic latitude b = 2 deg., longitude l = 72 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1964696 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment |_|| 157 | MASTER-Amur | P/ | 30 | 12.2 | 157 | MASTER-Amur | P/ | 30 | 12.2 | The observation and reduction will continue. The message may be cited.