TITLE: GCN CIRCULAR NUMBER: 40898 SUBJECT: Fermi GRB 250702F: Global MASTER-Net observations report DATE: 25/07/02 22:15:54 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A.Sosnovskij (CrAO), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity), D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) 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 250702F ( Fermi GBM team, GCN 40892) errorbox 1045 sec after notice time and 1076 sec after trigger time at 2025-07-02 21:24:39 UT, with upper limit up to 17.6 mag. The observations began at zenith distance = 68 deg. The sun altitude is -70.5 deg. The galactic latitude b = 66 deg., longitude l = 12 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2923618 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 1106 | 2025-07-02 21:24:39 | MASTER-SAAO | (14h 11m 15.13s , +16d 44m 54.1s) | P/ | 60 | 16.2 | 1106 | 2025-07-02 21:24:39 | MASTER-SAAO | (14h 09m 27.09s , +17d 00m 11.2s) | P\\ | 60 | 16.2 | 1185 | 2025-07-02 21:25:58 | MASTER-SAAO | (14h 11m 15.31s , +16d 44m 57.8s) | P/ | 60 | 16.8 | 1185 | 2025-07-02 21:25:58 | MASTER-SAAO | (14h 09m 27.34s , +17d 00m 16.0s) | P\\ | 60 | 16.7 | 1265 | 2025-07-02 21:27:17 | MASTER-SAAO | (14h 11m 15.50s , +16d 45m 01.2s) | P/ | 60 | 16.9 | 1265 | 2025-07-02 21:27:17 | MASTER-SAAO | (14h 09m 27.59s , +17d 00m 19.8s) | P\\ | 60 | 16.8 | 1344 | 2025-07-02 21:28:36 | MASTER-SAAO | (14h 11m 15.81s , +16d 45m 05.4s) | P/ | 60 | 13.8 | 1344 | 2025-07-02 21:28:36 | MASTER-SAAO | (14h 09m 27.96s , +17d 00m 24.8s) | P\\ | 60 | 13.2 | 1423 | 2025-07-02 21:29:55 | MASTER-SAAO | (14h 11m 16.13s , +16d 45m 08.4s) | P/ | 60 | 15.0 | 1423 | 2025-07-02 21:29:55 | MASTER-SAAO | (14h 09m 28.25s , +17d 00m 28.2s) | P\\ | 60 | 15.3 | 1502 | 2025-07-02 21:31:14 | MASTER-SAAO | (14h 11m 16.47s , +16d 45m 11.2s) | P/ | 60 | 17.0 | 1502 | 2025-07-02 21:31:14 | MASTER-SAAO | (14h 09m 28.60s , +17d 00m 32.0s) | P\\ | 60 | 17.0 | 1581 | 2025-07-02 21:32:33 | MASTER-SAAO | (14h 09m 28.93s , +17d 00m 35.2s) | P\\ | 60 | 15.3 | 1581 | 2025-07-02 21:32:33 | MASTER-SAAO | (14h 11m 16.74s , +16d 45m 14.1s) | P/ | 60 | 15.2 | 1660 | 2025-07-02 21:33:53 | MASTER-SAAO | (14h 11m 17.19s , +16d 45m 17.6s) | P/ | 60 | 16.2 | 1660 | 2025-07-02 21:33:53 | MASTER-SAAO | (14h 09m 29.37s , +17d 00m 38.9s) | P\\ | 60 | 16.4 | 1739 | 2025-07-02 21:35:12 | MASTER-SAAO | (14h 09m 29.75s , +17d 00m 41.8s) | P\\ | 60 | 16.2 | 1739 | 2025-07-02 21:35:12 | MASTER-SAAO | (14h 11m 17.59s , +16d 45m 20.3s) | P/ | 60 | 16.2 | 1818 | 2025-07-02 21:36:31 | MASTER-SAAO | (14h 11m 18.09s , +16d 45m 23.6s) | P/ | 60 | 15.3 | 1818 | 2025-07-02 21:36:31 | MASTER-SAAO | (14h 09m 30.27s , +17d 00m 45.5s) | P\\ | 60 | 15.5 | 1897 | 2025-07-02 21:37:50 | MASTER-SAAO | (14h 11m 18.42s , +16d 45m 25.8s) | P/ | 60 | 15.4 | 1897 | 2025-07-02 21:37:50 | MASTER-SAAO | (14h 09m 30.60s , +17d 00m 47.9s) | P\\ | 60 | 14.9 | 1977 | 2025-07-02 21:39:09 | MASTER-SAAO | (14h 11m 18.98s , +16d 45m 28.9s) | P/ | 60 | 14.7 | 1977 | 2025-07-02 21:39:09 | MASTER-SAAO | (14h 09m 31.18s , +17d 00m 51.7s) | P\\ | 60 | 14.9 | 2056 | 2025-07-02 21:40:28 | MASTER-SAAO | (14h 11m 19.57s , +16d 45m 31.9s) | P/ | 60 | 15.2 | 2056 | 2025-07-02 21:40:28 | MASTER-SAAO | (14h 09m 31.82s , +17d 00m 54.9s) | P\\ | 60 | 15.1 | 2135 | 2025-07-02 21:41:47 | MASTER-SAAO | (14h 11m 20.15s , +16d 45m 34.6s) | P/ | 60 | 16.4 | 2135 | 2025-07-02 21:41:47 | MASTER-SAAO | (14h 09m 32.32s , +17d 00m 58.0s) | P\\ | 60 | 16.2 | 2214 | 2025-07-02 21:43:07 | MASTER-SAAO | (14h 11m 20.70s , +16d 45m 37.3s) | P/ | 60 | 15.3 | 2214 | 2025-07-02 21:43:07 | MASTER-SAAO | (14h 09m 32.93s , +17d 01m 00.9s) | P\\ | 60 | 15.5 | 2293 | 2025-07-02 21:44:26 | MASTER-SAAO | (14h 09m 33.46s , +17d 01m 03.5s) | P\\ | 60 | 16.5 | 2293 | 2025-07-02 21:44:26 | MASTER-SAAO | (14h 11m 21.30s , +16d 45m 40.0s) | P/ | 60 | 16.4 | 2372 | 2025-07-02 21:45:45 | MASTER-SAAO | (14h 11m 21.94s , +16d 45m 43.1s) | P/ | 60 | 16.2 | 2372 | 2025-07-02 21:45:45 | MASTER-SAAO | (14h 09m 34.12s , +17d 01m 07.1s) | P\\ | 60 | 16.5 | 2452 | 2025-07-02 21:47:04 | MASTER-SAAO | (14h 11m 22.55s , +16d 45m 45.7s) | P/ | 60 | 16.1 | 2452 | 2025-07-02 21:47:04 | MASTER-SAAO | (14h 09m 34.75s , +17d 01m 09.9s) | P\\ | 60 | 15.6 | 2531 | 2025-07-02 21:48:23 | MASTER-SAAO | (14h 11m 23.17s , +16d 45m 48.6s) | P/ | 60 | 14.8 | 2531 | 2025-07-02 21:48:23 | MASTER-SAAO | (14h 09m 35.46s , +17d 01m 13.1s) | P\\ | 60 | 14.8 | 2610 | 2025-07-02 21:49:42 | MASTER-SAAO | (14h 09m 36.55s , +17d 01m 14.5s) | P\\ | 60 | 16.8 | 2610 | 2025-07-02 21:49:42 | MASTER-SAAO | (14h 11m 23.57s , +16d 45m 50.8s) | P/ | 60 | 17.1 | 2689 | 2025-07-02 21:51:02 | MASTER-SAAO | (14h 11m 24.20s , +16d 45m 53.3s) | C | 60 | 17.4 | 2689 | 2025-07-02 21:51:02 | MASTER-SAAO | (14h 09m 37.19s , +17d 01m 17.3s) | C | 60 | 17.0 | 2768 | 2025-07-02 21:52:21 | MASTER-SAAO | (14h 09m 37.95s , +17d 01m 20.6s) | C | 60 | 16.9 | 2768 | 2025-07-02 21:52:21 | MASTER-SAAO | (14h 11m 24.97s , +16d 45m 56.2s) | C | 60 | 17.6 | 2847 | 2025-07-02 21:53:40 | MASTER-SAAO | (14h 11m 25.79s , +16d 45m 59.0s) | C | 60 | 17.6 | 2847 | 2025-07-02 21:53:40 | MASTER-SAAO | (14h 09m 38.78s , +17d 01m 23.7s) | C | 60 | 17.0 | 2926 | 2025-07-02 21:54:58 | MASTER-SAAO | (14h 11m 26.61s , +16d 46m 02.5s) | C | 60 | 16.4 | 2926 | 2025-07-02 21:54:58 | MASTER-SAAO | (14h 09m 39.68s , +17d 01m 27.7s) | C | 60 | 15.7 | 3005 | 2025-07-02 21:56:18 | MASTER-SAAO | (14h 11m 27.41s , +16d 46m 05.2s) | C | 60 | 17.1 | 3005 | 2025-07-02 21:56:18 | MASTER-SAAO | (14h 09m 40.45s , +17d 01m 30.5s) | C | 60 | 16.4 | 3242 | 2025-07-02 22:00:15 | MASTER-SAAO | (14h 09m 43.34s , +17d 01m 40.5s) | C | 60 | 15.6 | 3242 | 2025-07-02 22:00:15 | MASTER-SAAO | (14h 11m 30.25s , +16d 46m 14.4s) | C | 60 | 16.4 | 3321 | 2025-07-02 22:01:33 | MASTER-SAAO | (14h 11m 30.94s , +16d 46m 16.3s) | C | 60 | 16.8 | 3321 | 2025-07-02 22:01:33 | MASTER-SAAO | (14h 09m 44.09s , +17d 01m 43.0s) | C | 60 | 15.8 | 3400 | 2025-07-02 22:02:52 | MASTER-SAAO | (14h 09m 44.99s , +17d 01m 45.7s) | C | 60 | 15.7 | 3400 | 2025-07-02 22:02:52 | MASTER-SAAO | (14h 11m 31.94s , +16d 46m 18.9s) | C | 60 | 16.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/40898. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...