Аннотация:MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) started inspect of the Fermi GRB221004.62 (trigger No 686588176,23h 35m 33.60s , +62d 07m 48.0s, R=11.38) errorbox 10866 sec after notice time and 10900 sec after trigger time at 2022-10-04 17:57:51 UT, with upper limit up to 17.9 mag. The observations began at zenith distance = 18 deg. The sun altitude is -41.6 deg. The galactic latitude b = 1 deg., longitude l = 115 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2109858 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________| _____________________|__________ ___________|_____________________ _______________|_____|_______|___ ____|________ 10930 | 2022-10-04 17:57:51 | MASTER- Tunka | (00h 12m 57.26s , +65d 13m 57.6s) | C | 60 | 17.9 | 11001 | 2022-10-04 17:59:02 | MASTER-Tunka | (00h 04m 55.64s , +61d 24m 37.1s) | C | 60 | 16.8 | 11072 | 2022-10-04 18:00:13 | MASTER-Tunka | (23h 54m 37.53s , +65d 11m 30.2s) | C | 60 | 17.4 | 11151 | 2022-10-04 18:01:32 | MASTER-Tunka | (23h 55m 35.92s , +61d 25m 13.6s) | C | 60 | 16.8 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.