TITLE: GCN CIRCULAR NUMBER: 26886 SUBJECT: Fermi trigger No 601677816: Global MASTER-Net observations report DATE: 20/01/26 12:36:18 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) 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 GRB200125.86 (trigger No 601677816,00h 29m 48.00s , +64d 41m 24.0s, R=1) errorbox 48 sec after notice time and 95 sec after trigger time at 2020-01-25 20:45:06 UT, with upper limit up to 19.2 mag. The observations began at zenith distance = 57 deg. The sun altitude is -61.0 deg. MASTER-IAC robotic telescope located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB200125.86 errorbox 108 sec after notice time and 155 sec after trigger time at 2020-01-25 20:46:06 UT, with upper limit up to 19.1 mag. The observations began at zenith distance = 48 deg. The sun altitude is -28.4 deg. MASTER-Amur robotic telescope located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB200125.86 errorbox 108 sec after notice time and 3849 sec after trigger time at 2020-01-25 21:47:40 UT, with upper limit up to 17.5 mag. Observations started at twilight. The observations began at zenith distance = 63 deg. The sun altitude is -13.7 deg. The galactic latitude b = 2 deg., longitude l = 121 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1269314 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 105 | 2020-01-25 20:45:06 | MASTER-Tavrida | (00h 21m 53.05s , +64d 30m 03.6s) | C | 20 | 18.0 | 170 | 2020-01-25 20:46:06 | MASTER-IAC | (00h 45m 48.20s , +64d 38m 36.5s) | P| | 30 | 17.3 | 220 | 2020-01-25 20:46:06 | MASTER-IAC | (00h 45m 48.20s , +64d 38m 36.6s) | P| | 130 | 18.0 | Coadd 170 | 2020-01-25 20:46:06 | MASTER-IAC | (00h 44m 14.93s , +64d 42m 25.3s) | P- | 30 | 17.3 | 220 | 2020-01-25 20:46:06 | MASTER-IAC | (00h 44m 14.93s , +64d 42m 25.3s) | P- | 130 | 18.1 | Coadd 220 | 2020-01-25 20:46:51 | MASTER-Tavrida | (00h 30m 06.67s , +64d 34m 50.1s) | C | 40 | 18.5 | 275 | 2020-01-25 20:46:51 | MASTER-Tavrida | (00h 30m 06.65s , +64d 34m 50.1s) | C | 150 | 19.3 | Coadd 261 | 2020-01-25 20:47:31 | MASTER-IAC | (00h 44m 17.49s , +64d 41m 52.9s) | P- | 40 | 17.5 | 261 | 2020-01-25 20:47:31 | MASTER-IAC | (00h 45m 50.35s , +64d 38m 03.3s) | P| | 40 | 17.4 | 286 | 2020-01-25 20:47:52 | MASTER-Tavrida | (00h 30m 10.72s , +64d 34m 09.7s) | C | 50 | 18.7 | 361 | 2020-01-25 20:49:02 | MASTER-Tavrida | (00h 30m 07.28s , +64d 35m 07.1s) | C | 60 | 18.7 | 368 | 2020-01-25 20:49:08 | MASTER-IAC | (00h 44m 14.86s , +64d 43m 02.2s) | P- | 60 | 17.8 | 368 | 2020-01-25 20:49:08 | MASTER-IAC | (00h 45m 47.54s , +64d 39m 11.8s) | P| | 60 | 17.7 | 452 | 2020-01-25 20:50:23 | MASTER-Tavrida | (00h 30m 08.03s , +64d 33m 54.4s) | C | 80 | 18.7 | 497 | 2020-01-25 20:51:08 | MASTER-IAC | (00h 45m 47.30s , +64d 37m 40.3s) | P| | 80 | 17.9 | 497 | 2020-01-25 20:51:08 | MASTER-IAC | (00h 44m 14.91s , +64d 41m 31.4s) | P- | 80 | 18.0 | 656 | 2020-01-25 20:53:27 | MASTER-IAC | (00h 28m 59.43s , +64d 33m 48.2s) | P| | 120 | 18.1 | 821 | 2020-01-25 20:53:27 | MASTER-IAC | (00h 28m 59.43s , +64d 33m 48.2s) | P| | 450 | 18.8 | Coadd 656 | 2020-01-25 20:53:27 | MASTER-IAC | (00h 27m 27.77s , +64d 37m 39.4s) | P- | 120 | 18.2 | 821 | 2020-01-25 20:53:27 | MASTER-IAC | (00h 27m 27.79s , +64d 37m 39.4s) | P- | 450 | 19.0 | Coadd 695 | 2020-01-25 20:54:00 | MASTER-Tavrida | (00h 21m 49.35s , +64d 29m 33.0s) | C | 130 | 18.3 | 855 | 2020-01-25 20:56:31 | MASTER-Tavrida | (00h 21m 46.37s , +64d 30m 14.5s) | C | 150 | 18.1 | 859 | 2020-01-25 20:56:34 | MASTER-IAC | (00h 27m 25.06s , +64d 37m 37.4s) | P- | 150 | 18.4 | 859 | 2020-01-25 20:56:34 | MASTER-IAC | (00h 28m 56.25s , +64d 33m 45.8s) | P| | 150 | 18.3 | 1040 | 2020-01-25 20:59:21 | MASTER-Tavrida | (00h 21m 54.02s , +64d 28m 55.1s) | C | 180 | 17.9 | 1085 | 2020-01-25 21:00:06 | MASTER-IAC | (00h 27m 24.32s , +64d 38m 35.4s) | P- | 180 | 18.5 | 1085 | 2020-01-25 21:00:06 | MASTER-IAC | (00h 28m 55.68s , +64d 34m 43.1s) | P| | 180 | 18.4 | 1241 | 2020-01-25 21:02:42 | MASTER-Tavrida | (00h 21m 50.52s , +64d 27m 31.8s) | C | 180 | 17.7 | 1324 | 2020-01-25 21:04:05 | MASTER-IAC | (00h 29m 02.16s , +64d 33m 40.3s) | P| | 180 | 18.4 | 1504 | 2020-01-25 21:04:05 | MASTER-IAC | (00h 29m 02.16s , +64d 33m 40.3s) | P| | 540 | 19.0 | Coadd 1324 | 2020-01-25 21:04:05 | MASTER-IAC | (00h 27m 30.45s , +64d 37m 33.4s) | P- | 180 | 18.6 | 1442 | 2020-01-25 21:06:03 | MASTER-Tavrida | (00h 21m 57.58s , +64d 27m 35.7s) | C | 180 | 17.7 | 1563 | 2020-01-25 21:08:03 | MASTER-IAC | (00h 28m 57.84s , +64d 32m 38.6s) | P| | 180 | 18.5 | 1563 | 2020-01-25 21:08:03 | MASTER-IAC | (00h 27m 25.88s , +64d 36m 31.4s) | P- | 180 | 18.6 | 1642 | 2020-01-25 21:09:23 | MASTER-Tavrida | (00h 21m 55.34s , +64d 28m 22.7s) | C | 180 | 17.7 | 1803 | 2020-01-25 21:12:03 | MASTER-IAC | (00h 29m 03.22s , +64d 33m 01.3s) | P| | 180 | 18.5 | 2375 | 2020-01-25 21:21:36 | MASTER-Tavrida | (00h 23m 04.00s , +64d 09m 15.5s) | C | 180 | 17.4 | 2408 | 2020-01-25 21:22:08 | MASTER-IAC | (00h 28m 30.48s , +64d 19m 47.3s) | P- | 180 | 18.5 | 2588 | 2020-01-25 21:22:08 | MASTER-IAC | (00h 28m 30.49s , +64d 19m 47.2s) | P- | 540 | 19.0 | Coadd 2408 | 2020-01-25 21:22:08 | MASTER-IAC | (00h 29m 58.94s , +64d 16m 02.9s) | P| | 180 | 18.5 | 2588 | 2020-01-25 21:22:08 | MASTER-IAC | (00h 29m 58.96s , +64d 16m 03.0s) | P| | 540 | 19.1 | Coadd 2575 | 2020-01-25 21:24:56 | MASTER-Tavrida | (00h 23m 08.20s , +64d 09m 47.5s) | C | 180 | 17.2 | 2646 | 2020-01-25 21:26:06 | MASTER-IAC | (00h 28m 28.15s , +64d 19m 47.6s) | P- | 180 | 18.5 | 2646 | 2020-01-25 21:26:06 | MASTER-IAC | (00h 29m 56.82s , +64d 16m 00.8s) | P| | 180 | 18.5 | 2776 | 2020-01-25 21:28:17 | MASTER-Tavrida | (00h 23m 03.04s , +64d 08m 25.0s) | C | 180 | 17.4 | 2883 | 2020-01-25 21:30:04 | MASTER-IAC | (00h 28m 27.09s , +64d 20m 46.7s) | P- | 180 | 18.5 | 2883 | 2020-01-25 21:30:04 | MASTER-IAC | (00h 29m 55.87s , +64d 16m 59.1s) | P| | 180 | 18.5 | 2977 | 2020-01-25 21:31:38 | MASTER-Tavrida | (00h 23m 05.25s , +64d 09m 17.9s) | C | 180 | 18.8 | 3122 | 2020-01-25 21:34:03 | MASTER-IAC | (00h 28m 32.81s , +64d 19m 45.2s) | P- | 180 | 18.5 | 3122 | 2020-01-25 21:34:03 | MASTER-IAC | (00h 30m 01.51s , +64d 15m 57.3s) | P| | 180 | 18.5 | 3879 | 2020-01-25 21:47:40 | MASTER-Amur | (00h 27m 55.52s , +64d 00m 36.1s) | C | 60 | 17.0 | 3974 | 2020-01-25 21:49:15 | MASTER-Amur | (00h 46m 08.57s , +63d 58m 30.2s) | C | 60 | 17.2 | 4112 | 2020-01-25 21:51:32 | MASTER-Amur | (00h 30m 11.44s , +66d 00m 20.8s) | C | 60 | 17.5 | 4206 | 2020-01-25 21:53:06 | MASTER-Amur | (00h 49m 43.17s , +65d 59m 17.4s) | C | 60 | 17.4 | 4301 | 2020-01-25 21:54:42 | MASTER-Amur | (00h 26m 00.37s , +62d 00m 40.1s) | C | 60 | 17.0 | 4698 | 2020-01-25 22:01:19 | MASTER-Amur | (00h 46m 09.87s , +64d 00m 08.3s) | C | 60 | 17.0 | 4793 | 2020-01-25 22:02:53 | MASTER-Amur | (00h 49m 47.18s , +65d 58m 42.9s) | C | 60 | 17.1 | 4987 | 2020-01-25 22:06:07 | MASTER-IAC | (00h 24m 00.39s , +61d 53m 55.8s) | C | 60 | 18.2 | 5352 | 2020-01-25 22:12:13 | MASTER-Tavrida | (00h 20m 01.38s , +63d 43m 16.6s) | C | 60 | 18.4 | 5405 | 2020-01-25 22:13:05 | MASTER-IAC | (00h 23m 58.34s , +61d 53m 50.4s) | C | 60 | 18.1 | 5444 | 2020-01-25 22:13:45 | MASTER-Tavrida | (00h 21m 37.56s , +65d 44m 45.9s) | C | 60 | 19.0 | 5542 | 2020-01-25 22:15:23 | MASTER-IAC | (00h 07m 53.75s , +63d 50m 12.6s) | C | 60 | 18.4 | 5673 | 2020-01-25 22:17:34 | MASTER-IAC | (00h 07m 53.39s , +63d 50m 10.5s) | C | 60 | 18.4 | 5769 | 2020-01-25 22:19:09 | MASTER-Tavrida | (00h 20m 01.76s , +63d 44m 23.9s) | C | 60 | 18.4 | 5861 | 2020-01-25 22:20:42 | MASTER-Tavrida | (00h 38m 12.54s , +63d 45m 25.6s) | C | 60 | 18.5 | 5954 | 2020-01-25 22:22:15 | MASTER-Tavrida | (00h 21m 41.47s , +65d 44m 16.0s) | C | 60 | 18.9 | 6046 | 2020-01-25 22:23:47 | MASTER-Tavrida | (00h 41m 11.30s , +65d 43m 20.4s) | C | 60 | 18.8 | 6373 | 2020-01-25 22:29:13 | MASTER-Tavrida | (00h 38m 15.51s , +63d 43m 40.4s) | C | 60 | 18.5 | 6463 | 2020-01-25 22:30:44 | MASTER-Tavrida | (00h 41m 15.96s , +65d 44m 56.9s) | C | 60 | 18.8 | 6468 | 2020-01-25 22:30:49 | MASTER-IAC | (00h 08m 36.77s , +65d 48m 59.0s) | C | 60 | 19.0 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.