Fermi trigger No 704233744: 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 GRB230426.85 (trigger No 704233744,02h 34m 07.20s , -82d 24m 00.0s, R=1) errorbox 4359 sec after notice time and 4391 sec after trigger time at 2023-04-26 21:42:11 UT, with upper limit up to 19.5 mag. The observations began at zenith distance = 66 deg. The sun altitude is -67.8 deg. The galactic latitude b = -34 deg., longitude l = 299 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2212931 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 4421 | 2023-04-26 21:42:11 | MASTER-SAAO | (01h 27m 03.92s , -82d 29m 00.9s) | C | 60 | 19.0 | 4421 | 2023-04-26 21:42:11 | MASTER-SAAO | (01h 20m 35.65s , -82d 28m 22.5s) | C | 60 | 19.0 | 4512 | 2023-04-26 21:43:41 | MASTER-SAAO | (02h 19m 39.15s , -82d 28m 10.5s) | C | 60 | 19.3 | 4512 | 2023-04-26 21:43:41 | MASTER-SAAO | (02h 13m 08.85s , -82d 27m 02.5s) | C | 60 | 19.1 | 4592 | 2023-04-26 21:45:01 | MASTER-SAAO | (01h 45m 43.90s , -84d 21m 20.8s) | C | 60 | 19.2 | 4592 | 2023-04-26 21:45:01 | MASTER-SAAO | (01h 37m 02.99s , -84d 20m 07.1s) | C | 60 | 19.2 | 4683 | 2023-04-26 21:46:33 | MASTER-SAAO | (03h 06m 32.18s , -84d 20m 04.6s) | C | 60 | 19.0 | 4683 | 2023-04-26 21:46:33 | MASTER-SAAO | (02h 57m 48.94s , -84d 18m 59.7s) | C | 60 | 19.0 | 4774 | 2023-04-26 21:48:04 | MASTER-SAAO | (02h 35m 16.16s , -80d 32m 36.3s) | C | 60 | 19.5 | 4774 | 2023-04-26 21:48:04 | MASTER-SAAO | (02h 30m 03.26s , -80d 31m 28.9s) | C | 60 | 19.3 | 4854 | 2023-04-26 21:49:23 | MASTER-SAAO | (03h 23m 46.51s , -80d 29m 48.1s) | C | 60 | 19.2 | 4854 | 2023-04-26 21:49:24 | MASTER-SAAO | (03h 18m 34.24s , -80d 28m 43.7s) | C | 60 | 19.2 | 4945 | 2023-04-26 21:50:54 | MASTER-SAAO | (03h 14m 10.20s , -82d 26m 11.4s) | C | 60 | 19.3 | 4945 | 2023-04-26 21:50:54 | MASTER-SAAO | (03h 07m 37.28s , -82d 25m 05.7s) | C | 60 | 19.3 | 5209 | 2023-04-26 21:55:18 | MASTER-SAAO | (01h 57m 53.08s , -80d 33m 06.9s) | C | 60 | 19.1 | 5209 | 2023-04-26 21:55:18 | MASTER-SAAO | (01h 52m 46.96s , -80d 32m 26.5s) | C | 60 | 19.0 | 5472 | 2023-04-26 21:59:41 | MASTER-SAAO | (01h 19m 39.35s , -82d 30m 28.6s) | C | 60 | 19.0 | 5472 | 2023-04-26 21:59:41 | MASTER-SAAO | (01h 13m 11.66s , -82d 29m 20.8s) | C | 60 | 18.8 | 5563 | 2023-04-26 22:01:12 | MASTER-SAAO | (02h 19m 52.79s , -82d 27m 54.3s) | C | 60 | 19.3 | 5563 | 2023-04-26 22:01:12 | MASTER-SAAO | (02h 13m 25.70s , -82d 26m 48.9s) | C | 60 | 19.1 | 5642 | 2023-04-26 22:02:32 | MASTER-SAAO | (01h 45m 52.19s , -84d 22m 02.2s) | C | 60 | 19.2 | 5642 | 2023-04-26 22:02:32 | MASTER-SAAO | (01h 37m 13.88s , -84d 20m 51.2s) | C | 60 | 19.2 | 5733 | 2023-04-26 22:04:02 | MASTER-SAAO | (03h 06m 44.10s , -84d 20m 25.1s) | C | 60 | 19.1 | 5733 | 2023-04-26 22:04:02 | MASTER-SAAO | (02h 58m 02.86s , -84d 19m 22.6s) | C | 60 | 19.0 | 5813 | 2023-04-26 22:05:22 | MASTER-SAAO | (02h 35m 29.11s , -80d 32m 07.0s) | C | 60 | 19.1 | 5813 | 2023-04-26 22:05:22 | MASTER-SAAO | (02h 30m 18.29s , -80d 31m 02.6s) | C | 60 | 19.0 | 5904 | 2023-04-26 22:06:53 | MASTER-SAAO | (03h 23m 53.12s , -80d 30m 55.7s) | C | 60 | 19.0 | 5904 | 2023-04-26 22:06:53 | MASTER-SAAO | (03h 18m 41.90s , -80d 29m 54.4s) | C | 60 | 18.9 | 5996 | 2023-04-26 22:08:25 | MASTER-SAAO | (03h 14m 21.28s , -82d 24m 20.7s) | C | 60 | 18.9 | 5996 | 2023-04-26 22:08:25 | MASTER-SAAO | (03h 07m 51.99s , -82d 23m 17.7s) | C | 60 | 18.9 | 6246 | 2023-04-26 22:12:35 | MASTER-SAAO | (01h 58m 01.95s , -80d 34m 58.9s) | C | 60 | 18.5 | 6246 | 2023-04-26 22:12:35 | MASTER-SAAO | (01h 52m 52.69s , -80d 34m 18.7s) | C | 60 | 18.3 | 6506 | 2023-04-26 22:16:56 | MASTER-SAAO | (01h 26m 54.32s , -82d 29m 01.1s) | C | 60 | 19.1 | 6506 | 2023-04-26 22:16:56 | MASTER-SAAO | (01h 20m 24.61s , -82d 28m 22.4s) | C | 60 | 19.0 | 6597 | 2023-04-26 22:18:26 | MASTER-SAAO | (02h 26m 12.15s , -82d 27m 25.5s) | C | 60 | 19.1 | 6597 | 2023-04-26 22:18:26 | MASTER-SAAO | (02h 19m 43.42s , -82d 26m 45.1s) | C | 60 | 19.1 | 6676 | 2023-04-26 22:19:46 | MASTER-SAAO | (01h 54m 21.50s , -84d 21m 39.4s) | C | 60 | 19.3 | 6676 | 2023-04-26 22:19:46 | MASTER-SAAO | (01h 45m 40.29s , -84d 21m 00.5s) | C | 60 | 19.1 | 6768 | 2023-04-26 22:21:17 | MASTER-SAAO | (03h 07m 05.14s , -84d 19m 47.9s) | C | 60 | 19.1 | 6768 | 2023-04-26 22:21:17 | MASTER-SAAO | (02h 58m 21.16s , -84d 18m 44.5s) | C | 60 | 19.1 | 6847 | 2023-04-26 22:22:37 | MASTER-SAAO | (02h 35m 33.06s , -80d 34m 06.8s) | C | 60 | 19.4 | 6847 | 2023-04-26 22:22:37 | MASTER-SAAO | (02h 30m 18.93s , -80d 33m 02.0s) | C | 60 | 19.2 | 6938 | 2023-04-26 22:24:08 | MASTER-SAAO | (03h 24m 09.02s , -80d 32m 04.8s) | C | 60 | 18.9 | 6938 | 2023-04-26 22:24:08 | MASTER-SAAO | (03h 18m 55.56s , -80d 31m 02.8s) | C | 60 | 18.8 | 7018 | 2023-04-26 22:25:27 | MASTER-SAAO | (03h 14m 36.57s , -82d 24m 50.6s) | C | 60 | 19.1 | 7018 | 2023-04-26 22:25:27 | MASTER-SAAO | (03h 08m 05.05s , -82d 23m 46.8s) | C | 60 | 19.0 | 7280 | 2023-04-26 22:29:49 | MASTER-SAAO | (01h 58m 17.06s , -80d 34m 47.0s) | C | 60 | 18.6 | 7280 | 2023-04-26 22:29:49 | MASTER-SAAO | (01h 53m 06.21s , -80d 34m 07.7s) | C | 60 | 18.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.