Fermi GRB 220309A: Global MASTER-Net observations report

MASTER-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 220309A ( Fermi GBM team, GCN 31717) errorbox 213 sec after notice time and 221 sec after trigger time at 2022-03-09 06:08:25 UT, with upper limit up to 18.5 mag. The observations began at zenith distance = 57 deg. The sun altitude is -49.3 deg. The galactic latitude b = 38 deg., longitude l = 238 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1905062 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 251 | 2022-03-09 06:08:25 | MASTER-OAFA | (09h 00m 07.82s , -05d 38m 13.1s) | C | 60 | 18.3 | 451 | 2022-03-09 06:11:44 | MASTER-OAFA | (08h 58m 21.00s , -03d 42m 28.9s) | C | 60 | 18.3 | 649 | 2022-03-09 06:15:03 | MASTER-OAFA | (09h 02m 29.80s , -07d 32m 16.1s) | C | 60 | 18.4 | 757 | 2022-03-09 06:16:50 | MASTER-OAFA | (09h 49m 38.47s , +01d 59m 09.4s) | C | 60 | 18.3 | 856 | 2022-03-09 06:18:30 | MASTER-OAFA | (09h 57m 42.22s , +02d 00m 50.4s) | C | 60 | 18.5 | 956 | 2022-03-09 06:20:09 | MASTER-OAFA | (09h 49m 30.23s , +00d 06m 46.0s) | C | 60 | 18.4 | 1057 | 2022-03-09 06:21:50 | MASTER-OAFA | (09h 57m 37.25s , +00d 05m 55.5s) | C | 60 | 18.3 | 1256 | 2022-03-09 06:25:10 | MASTER-OAFA | (09h 00m 09.29s , -05d 38m 01.8s) | C | 60 | 18.4 | 1456 | 2022-03-09 06:28:29 | MASTER-OAFA | (08h 58m 24.29s , -03d 44m 13.4s) | C | 60 | 18.3 | 1654 | 2022-03-09 06:31:48 | MASTER-OAFA | (09h 02m 22.89s , -07d 31m 31.6s) | C | 60 | 18.4 | 1754 | 2022-03-09 06:33:27 | MASTER-OAFA | (09h 49m 34.41s , +02d 00m 41.6s) | C | 60 | 18.2 | 1854 | 2022-03-09 06:35:07 | MASTER-OAFA | (09h 57m 42.21s , +01d 59m 52.0s) | C | 60 | 18.5 | 1953 | 2022-03-09 06:36:47 | MASTER-OAFA | (09h 49m 30.51s , +00d 04m 42.6s) | C | 60 | 18.2 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.