Аннотация:MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB220804.09 (trigger No 681271717,10h 37m 38.40s , +09d 22m 48.0s, R=6.48) errorbox 53320 sec after notice time and 53352 sec after trigger time at 2022-08-04 16:57:45 UT, with upper limit up to 15.1 mag. Observations started at twilight. The observations began at zenith distance = 70 deg. The sun altitude is -11.7 deg. The galactic latitude b = 54 deg., longitude l = 237 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2048705 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________| _____________________|__________ ___________|_____________________ _______________|_____|_______|___ ____|________ 53382 | 2022-08-04 16:57:45 | MASTER- SAAO | (10h 59m 04.11s , +05d 11m 27.4s) | C | 60 | 14.1 | 53462 | 2022-08-04 16:59:05 | MASTER-SAAO | (11h 00m 15.05s , +10d 54m 34.5s) | C | 60 | 13.4 | 53553 | 2022-08-04 17:00:35 | MASTER- SAAO | (11h 08m 25.11s , +10d 53m 24.2s) | C | 60 | 14.1 | 53635 | 2022-08-04 17:01:57 | MASTER-SAAO | (10h 49m 35.87s , +03d 16m 49.9s) | C | 60 | 14.3 | 53729 | 2022-08-04 17:03:31 | MASTER- SAAO | (10h 57m 38.35s , +03d 16m 41.2s) | C | 60 | 15.1 | 54071 | 2022-08-04 17:09:13 | MASTER-SAAO | (11h 01m 31.19s , +07d 05m 50.9s) | C | 60 | 13.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.