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) was pointed to the IceCube Alert 210922.76 (trigger No 30987826,04h 02m 55.20s , -04d 10m 48.0s, R=0.65) errorbox 30295 sec after notice time and 30428 sec after trigger time at 2021-09-23 02:44:29 UT, with upper limit up to 17.5 mag. The observations began at zenith distance = 28 deg. The sun altitude is -22.4 deg. The galactic latitude b = -38 deg., longitude l = 195 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1729682 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________| _____________________|__________ ___________|_____________________ _______________|_____|_______|___ ____|________ 30518 | 2021-09-23 02:44:29 | MASTER- SAAO | (04h 01m 54.27s , -04d 29m 17.4s) | C | 180 | 16.4 | 30661 | 2021-09-23 02:47:51 | MASTER-SAAO | (04h 00m 48.01s , -04d 38m 16.4s) | C | 60 | 17.4 | 30744 | 2021-09-23 02:49:15 | MASTER-SAAO | (04h 08m 46.41s , -04d 39m 25.3s) | C | 60 | 17.5 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.