Fermi GRB 241025A: Global MASTER-Net observations report

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 GRB 241025A ( Fermi GBM team, GCN 37860) errorbox 33528 sec after notice time and 33571 sec after trigger time at 2024-10-25 10:55:58 UT, with upper limit up to 18.6 mag. Observations started at twilight. The observations began at zenith distance = 34 deg. The sun altitude is -10.3 deg. The galactic latitude b = 20 deg., longitude l = 116 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2648590 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 33587 | 2024-10-25 10:55:58 | MASTER-Tunka | (22h 21m 51.83s , +83d 24m 29.9s) | C | 30 | 17.7 | 33630 | 2024-10-25 10:56:41 | MASTER-Tunka | (22h 21m 57.07s , +83d 23m 31.1s) | C | 30 | 17.7 | 33674 | 2024-10-25 10:57:25 | MASTER-Tunka | (22h 21m 50.77s , +83d 22m 33.0s) | C | 30 | 17.8 | 33716 | 2024-10-25 10:58:08 | MASTER-Tunka | (22h 21m 56.24s , +83d 22m 37.1s) | C | 30 | 17.8 | 33860 | 2024-10-25 11:00:31 | MASTER-Tunka | (22h 21m 59.88s , +83d 22m 43.0s) | C | 30 | 18.1 | 33919 | 2024-10-25 11:01:27 | MASTER-Tunka | (22h 22m 05.43s , +83d 24m 20.8s) | C | 36 | 18.3 | 34038 | 2024-10-25 11:03:26 | MASTER-Tunka | (22h 21m 56.61s , +83d 24m 43.0s) | C | 36 | 18.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.