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GCN Circular 27888

Subject
Fermi GRB 200604A: Global MASTER-Net observations report
Date
2020-06-04T21:30:27Z (4 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>
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-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 200604A ( Fermi GBM team, GCN 27887) errorbox  405 sec after notice time and 432 sec after trigger time at 2020-06-04 20:07:17 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 45 deg. The sun  altitude  is -55.5 deg. 

MASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB 200604A errorbox  2698 sec after notice time and 2725 sec after trigger time at 2020-06-04 20:45:30 UT, with upper limit up to  17.0 mag. The observations began at zenith distance = 77 deg. The sun  altitude  is -24.2 deg. 

MASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) started inspect of the Fermi GRB 200604A errorbox  4925 sec after notice time and 4951 sec after trigger time at 2020-06-04 21:22:36 UT, with upper limit up to  17.8 mag. Observations started at twilight.  The observations began at zenith distance = 43 deg. The sun  altitude  is -17.0 deg. 

The galactic latitude b = 56 deg., longitude l = 279 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1374035

We obtain a following upper limits.  

Tmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment
_________|_____________________|_____________________|____________________________________|_____|_______|_______|________

     462 | 2020-06-04 20:07:17 |         MASTER-SAAO | (11h 36m 25.90s , -07d 50m 28.6s) |   C |    60 | 18.3 |        
     462 | 2020-06-04 20:07:17 |         MASTER-SAAO | (11h 29m 26.39s , -07d 51m 49.2s) |   C |    60 | 18.2 |        
     542 | 2020-06-04 20:08:37 |         MASTER-SAAO | (11h 30m 06.23s , -01d 50m 59.3s) |   C |    60 | 18.1 |        
     542 | 2020-06-04 20:08:37 |         MASTER-SAAO | (11h 23m 10.86s , -01d 52m 21.0s) |   C |    60 | 18.4 |        
     622 | 2020-06-04 20:09:57 |         MASTER-SAAO | (11h 40m 19.11s , -09d 52m 33.2s) |   C |    60 | 18.5 |        
     622 | 2020-06-04 20:09:57 |         MASTER-SAAO | (11h 33m 17.34s , -09d 53m 52.8s) |   C |    60 | 18.4 |        
     702 | 2020-06-04 20:11:16 |         MASTER-SAAO | (11h 17m 24.75s , -05d 52m 31.3s) |   C |    60 | 18.3 |        
     702 | 2020-06-04 20:11:16 |         MASTER-SAAO | (11h 10m 27.36s , -05d 53m 52.6s) |   C |    60 | 18.4 |        
    1981 | 2020-06-04 20:32:35 |         MASTER-SAAO | (11h 36m 24.88s , -07d 52m 49.0s) |   C |    60 | 18.1 |        
    1981 | 2020-06-04 20:32:35 |         MASTER-SAAO | (11h 29m 25.59s , -07d 54m 09.2s) |   C |    60 | 17.9 |        
    2060 | 2020-06-04 20:33:55 |         MASTER-SAAO | (11h 30m 05.02s , -01d 52m 10.2s) |   C |    60 | 17.6 |        
    2060 | 2020-06-04 20:33:55 |         MASTER-SAAO | (11h 23m 09.90s , -01d 53m 31.1s) |   C |    60 | 17.7 |        
    2140 | 2020-06-04 20:35:15 |         MASTER-SAAO | (11h 40m 20.68s , -09d 51m 17.8s) |   C |    60 | 18.0 |        
    2140 | 2020-06-04 20:35:15 |         MASTER-SAAO | (11h 33m 19.22s , -09d 52m 36.8s) |   C |    60 | 18.0 |        
    2220 | 2020-06-04 20:36:34 |         MASTER-SAAO | (11h 17m 22.87s , -05d 52m 53.0s) |   C |    60 | 17.0 |        
    2220 | 2020-06-04 20:36:34 |         MASTER-SAAO | (11h 10m 25.83s , -05d 54m 13.3s) |   C |    60 | 17.0 |        
    2300 | 2020-06-04 20:37:54 |         MASTER-SAAO | (11h 20m 22.06s , -07d 51m 39.8s) |   C |    60 | 17.0 |        
    2300 | 2020-06-04 20:37:54 |         MASTER-SAAO | (11h 13m 23.24s , -07d 52m 59.3s) |   C |    60 | 17.0 |        
    2380 | 2020-06-04 20:39:14 |         MASTER-SAAO | (11h 29m 33.39s , +00d 08m 32.3s) |   C |    60 | 16.6 |        
    2380 | 2020-06-04 20:39:14 |         MASTER-SAAO | (11h 22m 38.75s , +00d 07m 12.2s) |   C |    60 | 16.8 |        
    2460 | 2020-06-04 20:40:34 |         MASTER-SAAO | (11h 15m 15.25s , -03d 51m 11.9s) |   C |    60 | 16.5 |        
    2539 | 2020-06-04 20:41:54 |         MASTER-SAAO | (11h 24m 08.89s , -09d 52m 16.9s) |   C |    60 | 17.3 |        
    2539 | 2020-06-04 20:41:54 |         MASTER-SAAO | (11h 17m 07.71s , -09d 53m 35.1s) |   C |    60 | 17.4 |        
    2619 | 2020-06-04 20:43:14 |         MASTER-SAAO | (11h 20m 15.52s , -07d 53m 17.8s) |   C |    60 | 16.5 |        
    2619 | 2020-06-04 20:43:14 |         MASTER-SAAO | (11h 13m 16.69s , -07d 54m 36.0s) |   C |    60 | 17.0 |        
    2699 | 2020-06-04 20:44:33 |         MASTER-SAAO | (11h 29m 39.99s , +00d 07m 31.8s) |   C |    60 | 16.6 |        
    2699 | 2020-06-04 20:44:33 |         MASTER-SAAO | (11h 22m 45.31s , +00d 06m 12.9s) |   C |    60 | 16.7 |        
    2755 | 2020-06-04 20:45:30 |   MASTER-Kislovodsk | (11h 40m 12.42s , -00d 00m 40.0s) |   C |    60 | 14.1 |        
    2778 | 2020-06-04 20:45:53 |         MASTER-SAAO | (11h 15m 18.14s , -03d 51m 35.6s) |   C |    60 | 16.6 |        
    2858 | 2020-06-04 20:47:12 |         MASTER-SAAO | (11h 24m 07.10s , -09d 53m 10.3s) |   C |    60 | 17.2 |        
    2858 | 2020-06-04 20:47:12 |         MASTER-SAAO | (11h 17m 05.85s , -09d 54m 27.6s) |   C |    60 | 17.0 |        
    2938 | 2020-06-04 20:48:32 |         MASTER-SAAO | (12h 03m 27.09s , -03d 50m 31.3s) |   C |    60 | 17.5 |        
    2938 | 2020-06-04 20:48:32 |         MASTER-SAAO | (11h 56m 30.98s , -03d 51m 48.0s) |   C |    60 | 17.2 |        
    3017 | 2020-06-04 20:49:52 |         MASTER-SAAO | (11h 56m 31.63s , -09d 51m 44.8s) |   C |    60 | 17.4 |        
    3017 | 2020-06-04 20:49:52 |         MASTER-SAAO | (11h 49m 30.04s , -09d 53m 00.7s) |   C |    60 | 17.1 |        
    3097 | 2020-06-04 20:51:12 |         MASTER-SAAO | (11h 14m 01.63s , -01d 51m 36.1s) |   C |    60 | 16.2 |        
    3177 | 2020-06-04 20:52:32 |         MASTER-SAAO | (12h 05m 40.98s , -05d 51m 16.4s) |   C |    60 | 17.3 |        
    3177 | 2020-06-04 20:52:32 |         MASTER-SAAO | (11h 58m 43.52s , -05d 52m 32.7s) |   C |    60 | 17.1 |        
    3238 | 2020-06-04 20:53:32 |   MASTER-Kislovodsk | (12h 12m 37.53s , +01d 59m 42.0s) |   C |    60 | 16.6 |        
    3257 | 2020-06-04 20:53:51 |         MASTER-SAAO | (12h 03m 21.61s , -03d 52m 09.9s) |   C |    60 | 17.5 |        
    3257 | 2020-06-04 20:53:51 |         MASTER-SAAO | (11h 56m 25.45s , -03d 53m 26.6s) |   C |    60 | 17.3 |        
    3318 | 2020-06-04 20:54:53 |   MASTER-Kislovodsk | (12h 00m 10.02s , +05d 59m 17.1s) |   C |    60 | 15.4 |        
    3337 | 2020-06-04 20:55:11 |         MASTER-SAAO | (11h 56m 38.57s , -09d 52m 36.6s) |   C |    60 | 17.8 |        
    3337 | 2020-06-04 20:55:11 |         MASTER-SAAO | (11h 49m 36.95s , -09d 53m 52.4s) |   C |    60 | 17.1 |        
    3398 | 2020-06-04 20:56:13 |   MASTER-Kislovodsk | (12h 14m 02.63s , +03d 59m 04.6s) |   C |    60 | 17.0 |        
    3417 | 2020-06-04 20:56:31 |         MASTER-SAAO | (11h 14m 04.32s , -01d 52m 05.9s) |   C |    60 | 16.9 |        
    3496 | 2020-06-04 20:57:51 |         MASTER-SAAO | (12h 05m 37.70s , -05d 52m 04.3s) |   C |    60 | 17.4 |        
    3496 | 2020-06-04 20:57:51 |         MASTER-SAAO | (11h 58m 40.22s , -05d 53m 20.4s) |   C |    60 | 17.1 |        
    3559 | 2020-06-04 20:58:54 |   MASTER-Kislovodsk | (12h 12m 42.50s , +02d 00m 26.2s) |   C |    60 | 15.7 |        
    3576 | 2020-06-04 20:59:11 |         MASTER-SAAO | (12h 02m 07.33s , -01d 50m 12.0s) |   C |    60 | 16.6 |        
    3576 | 2020-06-04 20:59:11 |         MASTER-SAAO | (11h 55m 11.97s , -01d 51m 28.5s) |   C |    60 | 16.9 |        
    3656 | 2020-06-04 21:00:30 |         MASTER-SAAO | (11h 45m 06.76s , -11d 52m 19.2s) |   C |    60 | 17.2 |        
    3656 | 2020-06-04 21:00:30 |         MASTER-SAAO | (11h 38m 02.35s , -11d 53m 34.7s) |   C |    60 | 17.3 |        
    3736 | 2020-06-04 21:01:50 |         MASTER-SAAO | (11h 28m 45.54s , -11d 51m 44.1s) |   C |    60 | 17.5 |        
    3736 | 2020-06-04 21:01:50 |         MASTER-SAAO | (11h 21m 41.28s , -11d 53m 00.0s) |   C |    60 | 17.5 |        
    4982 | 2020-06-04 21:22:36 |          MASTER-IAC | (11h 37m 25.56s , -07d 53m 05.4s) |   C |    60 | 17.8 |        
Filter C is a clear (unfiltred) band. 


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