Fermi GRB 240804A: Global MASTER-Net observations report

MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 240804A ( Fermi GBM team, GCN 37028) errorbox 6897 sec after notice time and 6928 sec after trigger time at 2024-08-04 21:01:30 UT, with upper limit up to 18.8 mag. The observations began at zenith distance = 28 deg. The sun altitude is -28.0 deg. The galactic latitude b = 31 deg., longitude l = 88 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2550987 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 6958 | 2024-08-04 21:01:30 | MASTER-Tavrida | (17h 39m 17.27s , +59d 19m 52.2s) | C | 60 | 18.8 | 7031 | 2024-08-04 21:02:43 | MASTER-Tavrida | (17h 55m 03.48s , +59d 20m 47.9s) | C | 60 | 18.8 | 7105 | 2024-08-04 21:03:57 | MASTER-Tavrida | (17h 39m 16.68s , +60d 39m 25.4s) | C | 60 | 18.8 | 7179 | 2024-08-04 21:05:11 | MASTER-Tavrida | (17h 55m 45.65s , +60d 38m 06.5s) | C | 60 | 18.6 | 7252 | 2024-08-04 21:06:24 | MASTER-Tavrida | (17h 39m 49.96s , +58d 01m 30.8s) | C | 60 | 18.6 | 7326 | 2024-08-04 21:07:38 | MASTER-Tavrida | (17h 54m 55.38s , +58d 03m 00.5s) | C | 60 | 18.7 | 8707 | 2024-08-04 21:30:39 | MASTER-Tavrida | (17h 39m 17.26s , +59d 20m 03.8s) | C | 60 | 17.6 | 8781 | 2024-08-04 21:31:52 | MASTER-Tavrida | (17h 55m 06.57s , +59d 18m 47.5s) | C | 60 | 18.0 | 8854 | 2024-08-04 21:33:06 | MASTER-Tavrida | (17h 39m 18.91s , +60d 36m 09.1s) | C | 60 | 17.9 | 8927 | 2024-08-04 21:34:19 | MASTER-Tavrida | (17h 55m 47.90s , +60d 36m 21.2s) | C | 60 | 17.3 | 9001 | 2024-08-04 21:35:33 | MASTER-Tavrida | (17h 39m 48.79s , +58d 02m 10.2s) | C | 60 | 15.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.