TITLE: GCN CIRCULAR NUMBER: 30789 SUBJECT: Fermi trigger No 652906639: Global MASTER-Net observations report DATE: 21/09/09 20:30:41 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-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 GRB210909.79 (trigger No 652906639,19h 25m 43.20s , +30d 51m 36.0s, R=4.24) errorbox 10 sec after notice time and 62 sec after trigger time at 2021-09-09 18:58:17 UT, with upper limit up to 18.4 mag. The observations began at zenith distance = 63 deg. The sun altitude is -32.6 deg. MASTER-Kislovodsk robotic telescope located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB210909.79 errorbox 49 sec after notice time and 101 sec after trigger time at 2021-09-09 18:58:56 UT, with upper limit up to 18.3 mag. The observations began at zenith distance = 23 deg. The sun altitude is -33.7 deg. MASTER-Tavrida robotic telescope located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB210909.79 errorbox 50 sec after notice time and 103 sec after trigger time at 2021-09-09 18:58:58 UT, with upper limit up to 18.1 mag. The observations began at zenith distance = 18 deg. The sun altitude is -29.0 deg. The galactic latitude b = 7 deg., longitude l = 64 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1715387 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 68 | 2021-09-09 18:58:17 | MASTER-SAAO | (19h 27m 04.00s , +30d 44m 13.8s) | C | 10 | 17.3 | 88 | 2021-09-09 18:58:17 | MASTER-SAAO | (19h 27m 04.00s , +30d 44m 13.9s) | C | 50 | 18.0 | Coadd 102 | 2021-09-09 18:58:47 | MASTER-SAAO | (19h 26m 58.45s , +30d 43m 16.6s) | C | 20 | 17.6 | 112 | 2021-09-09 18:58:56 | MASTER-Kislovodsk | (19h 26m 07.27s , +30d 52m 13.8s) | C | 20 | 16.7 | 147 | 2021-09-09 18:58:56 | MASTER-Kislovodsk | (19h 26m 07.27s , +30d 52m 13.9s) | C | 90 | 17.3 | Coadd 112 | 2021-09-09 18:58:56 | MASTER-Kislovodsk | (19h 21m 02.96s , +31d 15m 34.5s) | C | 20 | 17.4 | 147 | 2021-09-09 18:58:56 | MASTER-Kislovodsk | (19h 21m 02.96s , +31d 15m 34.5s) | C | 90 | 18.0 | Coadd 113 | 2021-09-09 18:58:58 | MASTER-Tavrida | (19h 27m 14.43s , +30d 41m 18.9s) | C | 20 | 17.4 | 148 | 2021-09-09 18:58:58 | MASTER-Tavrida | (19h 27m 14.44s , +30d 41m 19.0s) | C | 90 | 17.9 | Coadd 142 | 2021-09-09 18:59:26 | MASTER-SAAO | (19h 27m 04.80s , +30d 43m 28.9s) | C | 20 | 17.7 | 157 | 2021-09-09 18:59:36 | MASTER-Kislovodsk | (19h 26m 07.27s , +30d 53m 12.5s) | C | 30 | 16.8 | 157 | 2021-09-09 18:59:36 | MASTER-Kislovodsk | (19h 21m 02.91s , +31d 16m 33.9s) | C | 30 | 17.6 | 157 | 2021-09-09 18:59:37 | MASTER-Tavrida | (19h 27m 07.91s , +30d 40m 24.8s) | C | 30 | 17.6 | 186 | 2021-09-09 19:00:06 | MASTER-SAAO | (19h 27m 01.93s , +30d 44m 58.6s) | C | 30 | 17.8 | 231 | 2021-09-09 19:00:06 | MASTER-SAAO | (19h 27m 01.93s , +30d 44m 58.4s) | C | 120 | 18.0 | Coadd 212 | 2021-09-09 19:00:26 | MASTER-Kislovodsk | (19h 26m 14.21s , +30d 52m 13.6s) | C | 40 | 17.0 | 212 | 2021-09-09 19:00:26 | MASTER-Tavrida | (19h 27m 08.28s , +30d 41m 21.8s) | C | 40 | 17.7 | 212 | 2021-09-09 19:00:26 | MASTER-Kislovodsk | (19h 21m 09.87s , +31d 15m 35.6s) | C | 40 | 17.7 | 241 | 2021-09-09 19:00:55 | MASTER-SAAO | (19h 27m 02.34s , +30d 43m 50.3s) | C | 40 | 17.3 | 277 | 2021-09-09 19:01:26 | MASTER-Kislovodsk | (19h 26m 08.46s , +30d 51m 12.9s) | C | 50 | 17.1 | 277 | 2021-09-09 19:01:26 | MASTER-Kislovodsk | (19h 21m 04.18s , +31d 14m 35.0s) | C | 50 | 17.8 | 306 | 2021-09-09 19:01:55 | MASTER-SAAO | (19h 27m 04.77s , +30d 45m 17.0s) | C | 50 | 17.9 | 385 | 2021-09-09 19:03:05 | MASTER-SAAO | (19h 27m 00.26s , +30d 44m 30.9s) | C | 70 | 18.0 | 470 | 2021-09-09 19:04:34 | MASTER-SAAO | (19h 16m 47.96s , +31d 29m 32.8s) | C | 60 | 17.8 | 510 | 2021-09-09 19:05:14 | MASTER-Tavrida | (19h 24m 23.18s , +29d 53m 08.5s) | C | 60 | 17.5 | 519 | 2021-09-09 19:05:23 | MASTER-Kislovodsk | (19h 15m 23.16s , +29d 41m 35.6s) | C | 60 | 17.2 | 519 | 2021-09-09 19:05:23 | MASTER-Kislovodsk | (19h 10m 23.50s , +30d 04m 47.1s) | C | 60 | 18.2 | 550 | 2021-09-09 19:05:54 | MASTER-SAAO | (19h 26m 02.38s , +31d 28m 06.5s) | C | 60 | 17.9 | 589 | 2021-09-09 19:06:34 | MASTER-Tavrida | (19h 33m 41.36s , +29d 53m 17.4s) | C | 60 | 17.3 | 599 | 2021-09-09 19:06:43 | MASTER-Kislovodsk | (19h 27m 06.18s , +33d 31m 20.5s) | C | 60 | 17.2 | 599 | 2021-09-09 19:06:43 | MASTER-Kislovodsk | (19h 21m 51.72s , +33d 54m 41.5s) | C | 60 | 18.0 | 629 | 2021-09-09 19:07:14 | MASTER-SAAO | (19h 34m 29.15s , +31d 29m 29.5s) | C | 60 | 17.6 | 679 | 2021-09-09 19:08:04 | MASTER-Kislovodsk | (19h 11m 41.45s , +27d 48m 30.6s) | C | 60 | 17.1 | 679 | 2021-09-09 19:08:04 | MASTER-Kislovodsk | (19h 06m 48.09s , +28d 11m 34.9s) | C | 60 | 18.0 | 759 | 2021-09-09 19:09:24 | MASTER-Kislovodsk | (19h 03m 33.53s , +33d 54m 38.0s) | C | 60 | 18.2 | 759 | 2021-09-09 19:09:24 | MASTER-Kislovodsk | (19h 08m 46.79s , +33d 31m 19.7s) | C | 60 | 17.3 | 839 | 2021-09-09 19:10:44 | MASTER-Kislovodsk | (19h 45m 20.95s , +33d 30m 40.7s) | C | 60 | 16.6 | 839 | 2021-09-09 19:10:44 | MASTER-Kislovodsk | (19h 40m 05.45s , +33d 54m 04.1s) | C | 60 | 17.6 | 911 | 2021-09-09 19:11:55 | MASTER-SAAO | (19h 43m 54.04s , +31d 28m 43.6s) | C | 60 | 17.2 | 920 | 2021-09-09 19:12:04 | MASTER-Kislovodsk | (19h 35m 11.43s , +35d 23m 35.5s) | C | 60 | 17.2 | 920 | 2021-09-09 19:12:04 | MASTER-Kislovodsk | (19h 29m 48.53s , +35d 46m 55.7s) | C | 60 | 18.0 | 939 | 2021-09-09 19:12:23 | MASTER-Tavrida | (19h 29m 33.74s , +28d 00m 45.1s) | C | 60 | 17.2 | 991 | 2021-09-09 19:13:15 | MASTER-SAAO | (19h 12m 49.82s , +35d 19m 01.2s) | C | 60 | 18.0 | 1000 | 2021-09-09 19:13:24 | MASTER-Kislovodsk | (19h 26m 25.15s , +25d 53m 52.7s) | C | 60 | 17.2 | 1000 | 2021-09-09 19:13:24 | MASTER-Kislovodsk | (19h 21m 36.68s , +26d 16m 56.2s) | C | 60 | 17.8 | 1080 | 2021-09-09 19:14:44 | MASTER-Kislovodsk | (19h 02m 37.06s , +31d 36m 55.6s) | C | 60 | 17.3 | 1080 | 2021-09-09 19:14:44 | MASTER-Kislovodsk | (18h 57m 31.55s , +32d 00m 12.4s) | C | 60 | 18.1 | 1160 | 2021-09-09 19:16:04 | MASTER-Kislovodsk | (19h 41m 12.48s , +28d 11m 21.8s) | C | 60 | 17.2 | 1160 | 2021-09-09 19:16:04 | MASTER-Kislovodsk | (19h 46m 07.40s , +27d 48m 03.3s) | C | 60 | 16.5 | 1240 | 2021-09-09 19:17:25 | MASTER-Kislovodsk | (19h 50m 27.22s , +29d 43m 24.6s) | C | 60 | 16.5 | 1240 | 2021-09-09 19:17:25 | MASTER-Kislovodsk | (19h 45m 25.95s , +30d 06m 52.6s) | C | 60 | 17.0 | 1272 | 2021-09-09 19:17:56 | MASTER-SAAO | (19h 22m 38.25s , +35d 16m 31.3s) | C | 60 | 18.2 | 1320 | 2021-09-09 19:18:45 | MASTER-Kislovodsk | (18h 57m 50.17s , +29d 42m 09.6s) | C | 60 | 17.4 | 1400 | 2021-09-09 19:20:05 | MASTER-Kislovodsk | (19h 38m 24.33s , +26d 18m 55.0s) | C | 60 | 17.6 | 1434 | 2021-09-09 19:20:38 | MASTER-SAAO | (19h 14m 48.57s , +25d 46m 56.4s) | C | 60 | 18.1 | 1514 | 2021-09-09 19:21:58 | MASTER-SAAO | (19h 16m 52.33s , +31d 30m 28.7s) | C | 60 | 18.3 | 1593 | 2021-09-09 19:23:18 | MASTER-SAAO | (19h 26m 05.90s , +31d 29m 28.7s) | C | 60 | 18.1 | 1609 | 2021-09-09 19:23:33 | MASTER-Tavrida | (19h 24m 22.04s , +29d 54m 35.7s) | C | 60 | 17.6 | 1673 | 2021-09-09 19:24:37 | MASTER-SAAO | (19h 34m 32.64s , +31d 30m 04.1s) | C | 60 | 17.7 | 1688 | 2021-09-09 19:24:53 | MASTER-Tavrida | (19h 33m 38.87s , +29d 53m 31.5s) | C | 60 | 17.2 | 1768 | 2021-09-09 19:26:12 | MASTER-Tavrida | (19h 20m 30.86s , +27d 58m 21.0s) | C | 60 | 17.5 | 1802 | 2021-09-09 19:26:46 | MASTER-Kislovodsk | (19h 10m 24.47s , +30d 04m 38.9s) | C | 60 | 18.1 | 1802 | 2021-09-09 19:26:46 | MASTER-Kislovodsk | (19h 15m 23.31s , +29d 41m 43.4s) | C | 60 | 17.2 | 1847 | 2021-09-09 19:27:31 | MASTER-Tavrida | (19h 29m 38.67s , +27d 58m 21.3s) | C | 60 | 17.1 | 1915 | 2021-09-09 19:28:40 | MASTER-SAAO | (19h 43m 56.29s , +31d 29m 27.6s) | C | 60 | 17.3 | 1995 | 2021-09-09 19:29:59 | MASTER-SAAO | (19h 12m 55.83s , +35d 17m 55.7s) | C | 60 | 17.9 | 2014 | 2021-09-09 19:30:18 | MASTER-Kislovodsk | (19h 27m 06.51s , +33d 31m 30.1s) | C | 60 | 17.4 | 2014 | 2021-09-09 19:30:18 | MASTER-Kislovodsk | (19h 21m 52.46s , +33d 54m 21.5s) | C | 60 | 18.1 | 2094 | 2021-09-09 19:31:38 | MASTER-Kislovodsk | (19h 11m 40.90s , +27d 48m 22.3s) | C | 60 | 17.3 | 2094 | 2021-09-09 19:31:38 | MASTER-Kislovodsk | (19h 06m 48.85s , +28d 11m 18.1s) | C | 60 | 18.2 | 2174 | 2021-09-09 19:32:59 | MASTER-Kislovodsk | (19h 08m 44.89s , +33d 31m 11.3s) | C | 60 | 17.6 | 2174 | 2021-09-09 19:32:59 | MASTER-Kislovodsk | (19h 03m 33.03s , +33d 54m 18.1s) | C | 60 | 18.3 | 2234 | 2021-09-09 19:33:58 | MASTER-SAAO | (19h 22m 47.20s , +35d 18m 05.8s) | C | 60 | 17.8 | 2254 | 2021-09-09 19:34:19 | MASTER-Kislovodsk | (19h 45m 20.38s , +33d 30m 36.2s) | C | 60 | 16.9 | 2254 | 2021-09-09 19:34:19 | MASTER-Kislovodsk | (19h 40m 05.97s , +33d 53m 42.9s) | C | 60 | 17.8 | 2335 | 2021-09-09 19:35:39 | MASTER-Kislovodsk | (19h 35m 10.91s , +35d 23m 29.5s) | C | 60 | 17.4 | 2335 | 2021-09-09 19:35:39 | MASTER-Kislovodsk | (19h 29m 49.22s , +35d 46m 31.3s) | C | 60 | 18.1 | 2397 | 2021-09-09 19:36:42 | MASTER-SAAO | (19h 13m 55.18s , +25d 47m 53.3s) | C | 60 | 18.2 | 2415 | 2021-09-09 19:36:59 | MASTER-Kislovodsk | (19h 26m 25.16s , +25d 53m 49.2s) | C | 60 | 17.4 | 2415 | 2021-09-09 19:36:59 | MASTER-Kislovodsk | (19h 21m 37.99s , +26d 16m 44.7s) | C | 60 | 18.0 | 2477 | 2021-09-09 19:38:01 | MASTER-SAAO | (19h 15m 49.11s , +31d 31m 25.8s) | C | 60 | 18.4 | 2495 | 2021-09-09 19:38:19 | MASTER-Kislovodsk | (19h 02m 36.77s , +31d 36m 47.2s) | C | 60 | 17.5 | 2495 | 2021-09-09 19:38:19 | MASTER-Kislovodsk | (18h 57m 32.94s , +31d 59m 50.8s) | C | 60 | 18.3 | 2557 | 2021-09-09 19:39:21 | MASTER-SAAO | (19h 25m 10.94s , +31d 29m 09.1s) | C | 60 | 18.1 | 2575 | 2021-09-09 19:39:39 | MASTER-Kislovodsk | (19h 46m 07.23s , +27d 48m 08.3s) | C | 60 | 16.9 | 2575 | 2021-09-09 19:39:39 | MASTER-Kislovodsk | (19h 41m 13.42s , +28d 11m 18.1s) | C | 60 | 17.4 | 2637 | 2021-09-09 19:40:41 | MASTER-SAAO | (19h 33m 40.88s , +31d 30m 27.0s) | C | 60 | 17.7 | 2655 | 2021-09-09 19:40:59 | MASTER-Kislovodsk | (19h 50m 27.99s , +29d 43m 09.5s) | C | 60 | 16.7 | 2655 | 2021-09-09 19:40:59 | MASTER-Kislovodsk | (19h 45m 27.80s , +30d 06m 26.4s) | C | 60 | 17.2 | 2665 | 2021-09-09 19:41:09 | MASTER-Tavrida | (19h 29m 18.01s , +29d 29m 21.8s) | C | 60 | 17.3 | 2735 | 2021-09-09 19:42:19 | MASTER-Kislovodsk | (18h 57m 50.17s , +29d 41m 57.6s) | C | 60 | 17.6 | 2744 | 2021-09-09 19:42:28 | MASTER-Tavrida | (19h 38m 23.98s , +29d 28m 21.4s) | C | 60 | 17.1 | 2815 | 2021-09-09 19:43:39 | MASTER-Kislovodsk | (19h 38m 25.55s , +26d 18m 42.4s) | C | 60 | 17.7 | 2823 | 2021-09-09 19:43:47 | MASTER-Tavrida | (19h 25m 23.96s , +27d 34m 11.6s) | C | 60 | 17.5 | 2876 | 2021-09-09 19:44:40 | MASTER-SAAO | (19h 43m 01.62s , +31d 29m 08.9s) | C | 60 | 17.3 | 2902 | 2021-09-09 19:45:06 | MASTER-Tavrida | (19h 34m 22.12s , +27d 35m 59.6s) | C | 60 | 17.0 | 2956 | 2021-09-09 19:46:00 | MASTER-SAAO | (19h 11m 49.18s , +35d 18m 03.4s) | C | 60 | 17.8 | 2980 | 2021-09-09 19:46:25 | MASTER-Tavrida | (19h 52m 27.72s , +31d 22m 26.2s) | C | 60 | 16.8 | 3195 | 2021-09-09 19:49:59 | MASTER-SAAO | (19h 21m 40.50s , +35d 17m 40.3s) | C | 60 | 18.2 | 3223 | 2021-09-09 19:50:27 | MASTER-Kislovodsk | (19h 11m 44.29s , +27d 47m 11.4s) | C | 60 | 17.3 | 3223 | 2021-09-09 19:50:28 | MASTER-Kislovodsk | (19h 06m 54.24s , +28d 09m 57.7s) | C | 60 | 18.1 | 3303 | 2021-09-09 19:51:48 | MASTER-Kislovodsk | (19h 08m 49.86s , +33d 30m 40.6s) | C | 60 | 17.5 | 3303 | 2021-09-09 19:51:48 | MASTER-Kislovodsk | (19h 03m 40.21s , +33d 53m 40.5s) | C | 60 | 18.3 | 3358 | 2021-09-09 19:52:42 | MASTER-SAAO | (19h 13m 51.74s , +25d 48m 52.2s) | C | 60 | 18.2 | 3383 | 2021-09-09 19:53:08 | MASTER-Kislovodsk | (19h 45m 12.28s , +33d 30m 21.5s) | C | 60 | 16.9 | 3383 | 2021-09-09 19:53:08 | MASTER-Kislovodsk | (19h 39m 59.74s , +33d 53m 20.0s) | C | 60 | 17.8 | 3463 | 2021-09-09 19:54:28 | MASTER-Kislovodsk | (19h 35m 10.90s , +35d 25m 15.3s) | C | 60 | 17.4 | 3463 | 2021-09-09 19:54:28 | MASTER-Kislovodsk | (19h 29m 51.06s , +35d 48m 08.8s) | C | 60 | 18.1 | 3545 | 2021-09-09 19:55:50 | MASTER-Kislovodsk | (19h 26m 25.69s , +25d 54m 16.1s) | C | 60 | 17.4 | 3545 | 2021-09-09 19:55:50 | MASTER-Kislovodsk | (19h 21m 40.29s , +26d 17m 05.6s) | C | 60 | 17.9 | 3625 | 2021-09-09 19:57:10 | MASTER-Kislovodsk | (19h 02m 33.19s , +31d 34m 45.5s) | C | 60 | 17.5 | 3625 | 2021-09-09 19:57:10 | MASTER-Kislovodsk | (18h 57m 31.58s , +31d 57m 41.5s) | C | 60 | 18.2 | 3705 | 2021-09-09 19:58:30 | MASTER-Kislovodsk | (19h 46m 10.69s , +27d 47m 40.7s) | C | 60 | 16.9 | 3705 | 2021-09-09 19:58:30 | MASTER-Kislovodsk | (19h 41m 18.55s , +28d 10m 45.5s) | C | 60 | 17.3 | 3786 | 2021-09-09 19:59:50 | MASTER-Kislovodsk | (19h 50m 23.04s , +29d 43m 07.0s) | C | 60 | 16.7 | 3786 | 2021-09-09 19:59:50 | MASTER-Kislovodsk | (19h 45m 24.50s , +30d 06m 16.2s) | C | 60 | 17.1 | 3866 | 2021-09-09 20:01:10 | MASTER-Kislovodsk | (18h 57m 52.47s , +29d 40m 45.5s) | C | 60 | 17.6 | 3936 | 2021-09-09 20:02:20 | MASTER-Tavrida | (19h 52m 30.40s , +31d 23m 46.4s) | C | 60 | 17.3 | 3946 | 2021-09-09 20:02:30 | MASTER-Kislovodsk | (19h 38m 34.00s , +26d 17m 57.6s) | C | 60 | 17.6 | 4106 | 2021-09-09 20:05:11 | MASTER-Kislovodsk | (19h 20m 23.29s , +31d 36m 55.3s) | C | 60 | 17.4 | 4106 | 2021-09-09 20:05:11 | MASTER-Kislovodsk | (19h 15m 20.40s , +31d 59m 46.5s) | C | 60 | 18.0 | 4187 | 2021-09-09 20:06:31 | MASTER-Kislovodsk | (19h 32m 55.90s , +29d 42m 06.4s) | C | 60 | 17.1 | 4187 | 2021-09-09 20:06:31 | MASTER-Kislovodsk | (19h 27m 58.86s , +30d 05m 00.8s) | C | 60 | 17.7 | 4267 | 2021-09-09 20:07:51 | MASTER-Kislovodsk | (19h 38m 14.57s , +31d 35m 06.7s) | C | 60 | 17.0 | 4267 | 2021-09-09 20:07:51 | MASTER-Kislovodsk | (19h 33m 10.70s , +31d 58m 09.9s) | C | 60 | 17.6 | 4347 | 2021-09-09 20:09:11 | MASTER-Kislovodsk | (19h 28m 57.31s , +27d 47m 12.8s) | C | 60 | 17.0 | 4347 | 2021-09-09 20:09:11 | MASTER-Kislovodsk | (19h 24m 06.95s , +28d 10m 05.9s) | C | 60 | 17.6 | 4522 | 2021-09-09 20:12:06 | MASTER-Tavrida | (19h 32m 51.32s , +33d 17m 17.8s) | C | 60 | 18.1 | 4667 | 2021-09-09 20:14:32 | MASTER-Kislovodsk | (19h 16m 31.59s , +35d 23m 42.4s) | C | 60 | 17.5 | 4668 | 2021-09-09 20:14:32 | MASTER-Kislovodsk | (19h 11m 14.67s , +35d 46m 31.0s) | C | 60 | 18.1 | 5068 | 2021-09-09 20:21:12 | MASTER-Kislovodsk | (19h 20m 26.16s , +31d 36m 24.3s) | C | 60 | 17.3 | 5068 | 2021-09-09 20:21:12 | MASTER-Kislovodsk | (19h 15m 24.88s , +31d 59m 12.9s) | C | 60 | 17.9 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.