TITLE: GCN CIRCULAR NUMBER: 30114 SUBJECT: Fermi trigger No 644359567: Global MASTER-Net observations report DATE: 21/06/02 23:00:10 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), 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-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB210602.87 (trigger No 644359567,14h 03m 43.20s , -26d 56m 24.0s, R=9.37) errorbox 1314 sec after notice time and 1341 sec after trigger time at 2021-06-02 21:08:23 UT, with upper limit up to 18.6 mag. Observations started at twilight. The observations began at zenith distance = 57 deg. The sun altitude is -14.7 deg. MASTER-OAFA robotic telescope located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB210602.87 errorbox 7326 sec after notice time and 7353 sec after trigger time at 2021-06-02 22:48:35 UT, with upper limit up to 18.5 mag. Observations started at twilight. The observations began at zenith distance = 38 deg. The sun altitude is -14.5 deg. The galactic latitude b = 33 deg., longitude l = 323 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1627151 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 1371 | 2021-06-02 21:08:23 | MASTER-IAC | (13h 52m 04.99s , -27d 04m 54.0s) | C | 60 | 17.5 | 1451 | 2021-06-02 21:09:43 | MASTER-IAC | (13h 55m 24.99s , -25d 11m 59.3s) | C | 60 | 17.7 | 1531 | 2021-06-02 21:11:03 | MASTER-IAC | (13h 49m 40.31s , -29d 00m 58.7s) | C | 60 | 17.8 | 1611 | 2021-06-02 21:12:23 | MASTER-IAC | (14h 09m 15.58s , -27d 06m 53.3s) | C | 60 | 17.4 | 1691 | 2021-06-02 21:13:43 | MASTER-IAC | (13h 59m 25.73s , -23d 17m 14.8s) | C | 60 | 17.9 | 1771 | 2021-06-02 21:15:03 | MASTER-IAC | (14h 07m 06.16s , -29d 01m 08.1s) | C | 60 | 17.8 | 1851 | 2021-06-02 21:16:23 | MASTER-IAC | (14h 12m 14.17s , -25d 11m 47.3s) | C | 60 | 17.6 | 1931 | 2021-06-02 21:17:43 | MASTER-IAC | (13h 38m 32.30s , -25d 11m 58.3s) | C | 60 | 18.0 | 2011 | 2021-06-02 21:19:03 | MASTER-IAC | (13h 48m 04.66s , -30d 53m 04.7s) | C | 60 | 18.0 | 2091 | 2021-06-02 21:20:23 | MASTER-IAC | (13h 42m 55.74s , -23d 18m 03.2s) | C | 60 | 18.3 | 2171 | 2021-06-02 21:21:43 | MASTER-IAC | (14h 05m 47.73s , -30d 55m 17.5s) | C | 60 | 18.0 | 2251 | 2021-06-02 21:23:03 | MASTER-IAC | (13h 35m 06.14s , -27d 06m 38.2s) | C | 60 | 18.0 | 2331 | 2021-06-02 21:24:23 | MASTER-IAC | (13h 52m 08.55s , -27d 05m 29.5s) | C | 60 | 18.0 | 2411 | 2021-06-02 21:25:43 | MASTER-IAC | (13h 55m 22.95s , -25d 12m 47.3s) | C | 60 | 18.0 | 2491 | 2021-06-02 21:27:02 | MASTER-IAC | (13h 49m 46.89s , -28d 59m 14.9s) | C | 60 | 18.2 | 2571 | 2021-06-02 21:28:23 | MASTER-IAC | (14h 09m 11.22s , -27d 06m 22.6s) | C | 60 | 17.9 | 2651 | 2021-06-02 21:29:42 | MASTER-IAC | (13h 59m 22.34s , -23d 17m 15.7s) | C | 60 | 18.2 | 2730 | 2021-06-02 21:31:02 | MASTER-IAC | (14h 07m 08.54s , -29d 00m 22.0s) | C | 60 | 18.1 | 2810 | 2021-06-02 21:32:22 | MASTER-IAC | (14h 12m 08.83s , -25d 13m 25.9s) | C | 60 | 17.9 | 2890 | 2021-06-02 21:33:42 | MASTER-IAC | (13h 38m 36.62s , -25d 12m 43.6s) | C | 60 | 18.1 | 2970 | 2021-06-02 21:35:01 | MASTER-IAC | (13h 48m 07.89s , -30d 53m 27.7s) | C | 60 | 18.1 | 3049 | 2021-06-02 21:36:21 | MASTER-IAC | (13h 42m 52.41s , -23d 18m 55.8s) | C | 60 | 18.3 | 3129 | 2021-06-02 21:37:41 | MASTER-IAC | (14h 05m 54.62s , -30d 53m 51.1s) | C | 60 | 18.1 | 3210 | 2021-06-02 21:39:01 | MASTER-IAC | (13h 35m 00.75s , -27d 06m 08.2s) | C | 60 | 18.0 | 3289 | 2021-06-02 21:40:21 | MASTER-IAC | (13h 52m 04.50s , -27d 05m 16.6s) | C | 60 | 18.0 | 3371 | 2021-06-02 21:41:42 | MASTER-IAC | (13h 55m 26.80s , -25d 12m 18.4s) | C | 60 | 18.1 | 3451 | 2021-06-02 21:43:02 | MASTER-IAC | (13h 49m 40.58s , -29d 01m 16.3s) | C | 60 | 18.2 | 3531 | 2021-06-02 21:44:22 | MASTER-IAC | (14h 09m 15.44s , -27d 07m 00.3s) | C | 60 | 18.0 | 3611 | 2021-06-02 21:45:42 | MASTER-IAC | (13h 59m 25.81s , -23d 17m 33.9s) | C | 60 | 18.3 | 3691 | 2021-06-02 21:47:02 | MASTER-IAC | (14h 07m 06.26s , -29d 01m 16.3s) | C | 60 | 18.2 | 3771 | 2021-06-02 21:48:22 | MASTER-IAC | (14h 12m 14.18s , -25d 11m 48.2s) | C | 60 | 18.1 | 3851 | 2021-06-02 21:49:42 | MASTER-IAC | (13h 38m 30.44s , -25d 12m 12.7s) | C | 60 | 18.1 | 3930 | 2021-06-02 21:51:02 | MASTER-IAC | (13h 48m 04.17s , -30d 53m 18.2s) | C | 60 | 18.1 | 4011 | 2021-06-02 21:52:23 | MASTER-IAC | (13h 42m 54.42s , -23d 18m 16.9s) | C | 60 | 18.3 | 4091 | 2021-06-02 21:53:42 | MASTER-IAC | (14h 05m 48.54s , -30d 55m 29.5s) | C | 60 | 18.2 | 4171 | 2021-06-02 21:55:03 | MASTER-IAC | (13h 35m 05.48s , -27d 07m 00.2s) | C | 60 | 18.1 | 4251 | 2021-06-02 21:56:23 | MASTER-IAC | (14h 15m 58.98s , -23d 17m 59.0s) | C | 60 | 18.4 | 4331 | 2021-06-02 21:57:43 | MASTER-IAC | (13h 32m 19.10s , -29d 00m 52.9s) | C | 60 | 18.1 | 4411 | 2021-06-02 21:59:03 | MASTER-IAC | (14h 04m 18.79s , -21d 23m 53.3s) | C | 60 | 18.3 | 4491 | 2021-06-02 22:00:23 | MASTER-IAC | (14h 26m 15.74s , -27d 06m 47.0s) | C | 60 | 18.1 | 4571 | 2021-06-02 22:01:43 | MASTER-IAC | (14h 05m 28.07s , -32d 47m 32.0s) | C | 60 | 18.2 | 4651 | 2021-06-02 22:03:03 | MASTER-IAC | (13h 47m 26.63s , -32d 48m 23.6s) | C | 60 | 18.1 | 4731 | 2021-06-02 22:04:23 | MASTER-IAC | (14h 24m 26.57s , -29d 01m 47.6s) | C | 60 | 18.1 | 4811 | 2021-06-02 22:05:43 | MASTER-IAC | (13h 47m 58.90s , -21d 25m 04.0s) | C | 60 | 18.5 | 4891 | 2021-06-02 22:07:03 | MASTER-IAC | (14h 23m 34.95s , -30d 53m 58.1s) | C | 60 | 18.1 | 4971 | 2021-06-02 22:08:23 | MASTER-IAC | (13h 53m 46.45s , -19d 31m 09.2s) | C | 60 | 18.5 | 5051 | 2021-06-02 22:09:43 | MASTER-IAC | (13h 31m 38.35s , -21d 23m 27.0s) | C | 60 | 18.5 | 5131 | 2021-06-02 22:11:03 | MASTER-IAC | (14h 20m 33.07s , -21d 24m 47.7s) | C | 60 | 18.5 | 5211 | 2021-06-02 22:12:23 | MASTER-IAC | (14h 15m 55.19s , -23d 17m 44.7s) | C | 60 | 18.4 | 5291 | 2021-06-02 22:13:43 | MASTER-IAC | (13h 32m 22.91s , -29d 00m 25.1s) | C | 60 | 18.2 | 5371 | 2021-06-02 22:15:03 | MASTER-IAC | (14h 04m 12.18s , -21d 25m 40.0s) | C | 60 | 18.4 | 5451 | 2021-06-02 22:16:23 | MASTER-IAC | (14h 26m 22.06s , -27d 07m 47.6s) | C | 60 | 18.2 | 5531 | 2021-06-02 22:17:43 | MASTER-IAC | (14h 05m 30.65s , -32d 47m 45.9s) | C | 60 | 18.2 | 5612 | 2021-06-02 22:19:04 | MASTER-IAC | (13h 47m 24.48s , -32d 49m 32.6s) | C | 60 | 18.1 | 5692 | 2021-06-02 22:20:24 | MASTER-IAC | (14h 24m 32.08s , -29d 00m 17.1s) | C | 60 | 18.2 | 5772 | 2021-06-02 22:21:44 | MASTER-IAC | (13h 47m 53.55s , -21d 24m 36.8s) | C | 60 | 18.4 | 5853 | 2021-06-02 22:23:05 | MASTER-IAC | (14h 23m 31.86s , -30d 53m 58.2s) | C | 60 | 18.1 | 5933 | 2021-06-02 22:24:25 | MASTER-IAC | (13h 53m 49.76s , -19d 30m 40.2s) | C | 60 | 18.4 | 6013 | 2021-06-02 22:25:44 | MASTER-IAC | (13h 31m 32.50s , -21d 25m 32.9s) | C | 60 | 18.6 | 6092 | 2021-06-02 22:27:04 | MASTER-IAC | (14h 20m 38.91s , -21d 25m 42.4s) | C | 60 | 18.6 | 6172 | 2021-06-02 22:28:24 | MASTER-IAC | (14h 15m 58.91s , -23d 18m 13.0s) | C | 60 | 18.4 | 6252 | 2021-06-02 22:29:44 | MASTER-IAC | (13h 32m 18.95s , -29d 01m 35.0s) | C | 60 | 18.2 | 6332 | 2021-06-02 22:31:04 | MASTER-IAC | (14h 04m 18.49s , -21d 24m 08.5s) | C | 60 | 18.5 | 6412 | 2021-06-02 22:32:24 | MASTER-IAC | (14h 26m 14.80s , -27d 07m 04.7s) | C | 60 | 18.3 | 6492 | 2021-06-02 22:33:43 | MASTER-IAC | (14h 05m 28.73s , -32d 47m 51.1s) | C | 60 | 18.2 | 6572 | 2021-06-02 22:35:04 | MASTER-IAC | (13h 47m 27.54s , -32d 48m 43.4s) | C | 60 | 18.1 | 6652 | 2021-06-02 22:36:23 | MASTER-IAC | (14h 24m 27.55s , -29d 02m 05.8s) | C | 60 | 18.2 | 6731 | 2021-06-02 22:37:43 | MASTER-IAC | (13h 47m 59.63s , -21d 25m 36.1s) | C | 60 | 18.5 | 6812 | 2021-06-02 22:39:04 | MASTER-IAC | (14h 23m 35.16s , -30d 54m 12.0s) | C | 60 | 18.1 | 6891 | 2021-06-02 22:40:23 | MASTER-IAC | (13h 53m 46.39s , -19d 31m 26.3s) | C | 60 | 18.4 | 6971 | 2021-06-02 22:41:43 | MASTER-IAC | (13h 31m 38.15s , -21d 23m 44.6s) | C | 60 | 18.5 | 7051 | 2021-06-02 22:43:03 | MASTER-IAC | (14h 20m 32.74s , -21d 25m 04.3s) | C | 60 | 18.5 | 7131 | 2021-06-02 22:44:23 | MASTER-IAC | (13h 30m 20.96s , -30d 53m 42.5s) | C | 60 | 18.2 | 7211 | 2021-06-02 22:45:43 | MASTER-IAC | (14h 29m 03.72s , -25d 13m 11.9s) | C | 60 | 18.3 | 7292 | 2021-06-02 22:47:03 | MASTER-IAC | (14h 09m 51.14s , -19d 31m 59.2s) | C | 60 | 18.4 | 7371 | 2021-06-02 22:48:23 | MASTER-IAC | (14h 06m 08.53s , -34d 43m 41.0s) | C | 60 | 18.1 | 7384 | 2021-06-02 22:48:35 | MASTER-OAFA | (13h 51m 30.54s , -26d 28m 42.7s) | C | 60 | 18.3 | 7451 | 2021-06-02 22:49:43 | MASTER-IAC | (13h 26m 17.94s , -23d 18m 07.4s) | C | 60 | 18.4 | 7463 | 2021-06-02 22:49:55 | MASTER-OAFA | (14h 00m 30.38s , -26d 30m 10.0s) | C | 60 | 18.3 | 7531 | 2021-06-02 22:51:03 | MASTER-IAC | (13h 21m 44.84s , -25d 13m 43.8s) | C | 60 | 18.2 | 7543 | 2021-06-02 22:51:15 | MASTER-OAFA | (13h 54m 43.64s , -24d 35m 26.9s) | C | 60 | 18.5 | 7611 | 2021-06-02 22:52:23 | MASTER-IAC | (13h 37m 41.33s , -19d 30m 10.6s) | C | 60 | 18.5 | 7622 | 2021-06-02 22:52:34 | MASTER-OAFA | (14h 03m 34.55s , -24d 34m 33.3s) | C | 60 | 18.5 | 7692 | 2021-06-02 22:53:43 | MASTER-IAC | (14h 23m 34.32s , -32d 49m 12.9s) | C | 60 | 18.2 | 7704 | 2021-06-02 22:53:56 | MASTER-OAFA | (14h 08m 32.19s , -26d 30m 38.8s) | C | 60 | 18.4 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.