Fermi trigger No 747920561: Global MASTER-Net observations report

MASTER-Amur robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB240913.49 (trigger No 747920561,00h 58m 19.20s , +12d 18m 36.0s, R=3.82) errorbox 1518 sec after notice time and 1525 sec after trigger time at 2024-09-13 12:08:01 UT, with upper limit up to 13.5 mag. The observations began at zenith distance = 69 deg. The sun altitude is -21.5 deg. The galactic latitude b = -50 deg., longitude l = 127 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2599965 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 1616 | 2024-09-13 12:08:01 | MASTER-Amur | (00h 59m 51.76s , +12d 48m 07.2s) | C | 180 | 12.9 | 1815 | 2024-09-13 12:11:21 | MASTER-Amur | (00h 59m 51.93s , +12d 47m 50.0s) | C | 180 | 13.0 | 2015 | 2024-09-13 12:14:40 | MASTER-Amur | (00h 59m 52.09s , +12d 47m 37.7s) | C | 180 | 13.5 | 2214 | 2024-09-13 12:18:00 | MASTER-Amur | (00h 59m 52.33s , +12d 47m 24.9s) | C | 180 | 13.0 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.