Fermi GRB 230207A: Global MASTER-Net observations report

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 GRB 230207A ( Fermi GBM team, GCN 33294) errorbox 614 sec after notice time and 647 sec after trigger time at 2023-02-07 00:41:32 UT, with upper limit up to 18.8 mag. The observations began at zenith distance = 52 deg. The sun altitude is -35.8 deg. The galactic latitude b = 18 deg., longitude l = 339 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2197290 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 713 | 2023-02-07 00:41:32 | MASTER-SAAO | (15h 17m 05.81s , -31d 23m 31.7s) | C | 130 | 18.5 | 713 | 2023-02-07 00:41:32 | MASTER-SAAO | (15h 16m 03.20s , -31d 22m 38.3s) | C | 130 | 18.4 | 889 | 2023-02-07 00:44:13 | MASTER-SAAO | (15h 17m 00.65s , -31d 24m 30.0s) | C | 160 | 18.8 | 889 | 2023-02-07 00:44:13 | MASTER-SAAO | (15h 15m 57.97s , -31d 23m 36.8s) | C | 160 | 18.6 | 1090 | 2023-02-07 00:47:24 | MASTER-SAAO | (15h 16m 04.72s , -31d 23m 24.9s) | C | 180 | 18.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.