[vsnet-grb-info 28494] Fermi trigger No 649814537: Global MASTER-Net observations report

GCN Circulars gcncirc at capella2.gsfc.nasa.gov
Thu Aug 5 10:32:55 JST 2021 

TITLE:   GCN CIRCULAR
NUMBER:  30597
SUBJECT: Fermi  trigger No 649814537: Global MASTER-Net observations report 
DATE:    21/08/05 01:31:53 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov at 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),

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 GRB210805.00 (trigger No 649814537,14h 08m 52.80s , -63d 13m 12.0s, R=8.46) errorbox  114 sec after notice time and 205 sec after trigger time at 2021-08-05 00:05:37 UT, with upper limit up to  17.5 mag. The observations began at zenith distance = 75 deg. The sun  altitude  is -66.4 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB210805.00 errorbox  358 sec after notice time and 448 sec after trigger time at 2021-08-05 00:09:41 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 43 deg. The sun  altitude  is -27.4 deg. 

The galactic latitude b = -2 deg., longitude l = 312 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1681181

We obtain a following upper limits.  

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

     235 | 2021-08-05 00:05:37 |         MASTER-SAAO | (13h 58m 41.26s , -63d 10m 01.1s) |   C |    60 | 16.8 |        
     315 | 2021-08-05 00:06:57 |         MASTER-SAAO | (14h 16m 16.36s , -63d 11m 04.4s) |   C |    60 | 17.3 |        
     394 | 2021-08-05 00:08:17 |         MASTER-SAAO | (14h 10m 33.96s , -61d 16m 55.7s) |   C |    60 | 17.3 |        
     474 | 2021-08-05 00:09:36 |         MASTER-SAAO | (14h 27m 03.10s , -61d 18m 15.9s) |   C |    60 | 17.5 |        
     478 | 2021-08-05 00:09:41 |         MASTER-OAFA | (13h 44m 59.79s , -65d 53m 41.2s) |   C |    60 | 17.3 |        
     554 | 2021-08-05 00:10:56 |         MASTER-SAAO | (13h 39m 00.95s , -61d 15m 31.2s) |   C |    60 | 16.3 |        
     558 | 2021-08-05 00:11:00 |         MASTER-OAFA | (14h 03m 59.51s , -65d 52m 39.3s) |   C |    60 | 17.3 |        
     634 | 2021-08-05 00:12:16 |         MASTER-SAAO | (13h 55m 36.30s , -61d 17m 21.8s) |   C |    60 | 17.4 |        
     637 | 2021-08-05 00:12:19 |         MASTER-OAFA | (14h 21m 10.74s , -65d 52m 52.3s) |   C |    60 | 17.4 |        
     713 | 2021-08-05 00:13:35 |         MASTER-SAAO | (14h 32m 14.54s , -63d 11m 16.7s) |   C |    60 | 15.2 |        
     718 | 2021-08-05 00:13:40 |         MASTER-OAFA | (14h 40m 09.33s , -65d 54m 04.4s) |   C |    60 | 17.6 |        
    1115 | 2021-08-05 00:20:17 |         MASTER-OAFA | (13h 51m 02.56s , -60d 11m 54.9s) |   C |    60 | 17.9 |        
    1394 | 2021-08-05 00:24:56 |         MASTER-OAFA | (14h 06m 44.76s , -60d 11m 25.3s) |   C |    60 | 18.1 |        
    1673 | 2021-08-05 00:29:35 |         MASTER-OAFA | (13h 45m 00.25s , -65d 53m 01.2s) |   C |    60 | 17.3 |        
    1753 | 2021-08-05 00:30:55 |         MASTER-OAFA | (14h 03m 56.87s , -65d 54m 22.0s) |   C |    60 | 17.3 |        
    1833 | 2021-08-05 00:32:15 |         MASTER-OAFA | (14h 21m 12.23s , -65d 54m 23.0s) |   C |    60 | 17.5 |        
    1912 | 2021-08-05 00:33:35 |         MASTER-OAFA | (14h 40m 12.92s , -65d 53m 34.7s) |   C |    60 | 17.6 |        
    2089 | 2021-08-05 00:36:31 |         MASTER-SAAO | (14h 50m 04.06s , -63d 10m 46.6s) |   C |    60 | 16.4 |        
    2313 | 2021-08-05 00:40:15 |         MASTER-OAFA | (13h 51m 05.46s , -60d 11m 16.0s) |   C |    60 | 17.8 |        
    2380 | 2021-08-05 00:41:22 |         MASTER-SAAO | (13h 58m 53.97s , -63d 11m 45.7s) |   C |    60 | 16.8 |        
    2393 | 2021-08-05 00:41:35 |         MASTER-OAFA | (14h 06m 45.82s , -60d 12m 30.6s) |   C |    60 | 18.0 |        
    2460 | 2021-08-05 00:42:42 |         MASTER-SAAO | (14h 16m 39.15s , -63d 11m 52.5s) |   C |    60 | 16.8 |        
    2472 | 2021-08-05 00:42:54 |         MASTER-OAFA | (13h 23m 46.37s , -63d 58m 13.4s) |   C |    60 | 17.2 |        
    2540 | 2021-08-05 00:44:02 |         MASTER-SAAO | (14h 10m 46.08s , -61d 15m 46.8s) |   C |    60 | 17.4 |        
    2551 | 2021-08-05 00:44:13 |         MASTER-OAFA | (13h 41m 34.00s , -63d 59m 40.3s) |   C |    60 | 17.2 |        
    2622 | 2021-08-05 00:45:24 |         MASTER-SAAO | (14h 27m 21.76s , -61d 17m 54.3s) |   C |    60 | 17.3 |        
    2702 | 2021-08-05 00:46:44 |         MASTER-SAAO | (13h 55m 50.94s , -61d 16m 32.2s) |   C |    60 | 16.8 |        
    2782 | 2021-08-05 00:48:04 |         MASTER-SAAO | (14h 32m 29.28s , -63d 10m 05.5s) |   C |    60 | 17.0 |        
    3074 | 2021-08-05 00:52:57 |         MASTER-SAAO | (14h 50m 11.09s , -63d 12m 43.1s) |   C |    60 | 16.9 |        
    3166 | 2021-08-05 00:54:28 |         MASTER-SAAO | (13h 29m 35.02s , -66d 57m 58.8s) |   C |    60 | 16.8 |        
    3257 | 2021-08-05 00:55:59 |         MASTER-SAAO | (13h 53m 26.16s , -66d 59m 51.7s) |   C |    60 | 16.8 |        
    3337 | 2021-08-05 00:57:19 |         MASTER-SAAO | (13h 59m 06.35s , -63d 10m 13.7s) |   C |    60 | 17.0 |        
    3417 | 2021-08-05 00:58:39 |         MASTER-SAAO | (14h 16m 39.56s , -63d 10m 53.2s) |   C |    60 | 16.9 |        
    3496 | 2021-08-05 00:59:59 |         MASTER-SAAO | (14h 10m 51.79s , -61d 15m 43.7s) |   C |    60 | 17.2 |        
    3582 | 2021-08-05 01:01:24 |         MASTER-SAAO | (14h 27m 32.06s , -61d 16m 57.5s) |   C |    60 | 17.2 |        
    3662 | 2021-08-05 01:02:44 |         MASTER-SAAO | (14h 00m 17.87s , -68d 53m 56.5s) |   C |    60 | 16.9 |        
    3741 | 2021-08-05 01:04:03 |         MASTER-SAAO | (14h 22m 27.78s , -68d 52m 22.2s) |   C |    60 | 17.5 |        
    3821 | 2021-08-05 01:05:23 |         MASTER-SAAO | (14h 32m 36.86s , -63d 11m 03.5s) |   C |    60 | 16.9 |        
    3914 | 2021-08-05 01:06:56 |         MASTER-SAAO | (13h 07m 22.10s , -65d 04m 28.1s) |   C |    60 | 16.8 |        
    4263 | 2021-08-05 01:12:45 |         MASTER-SAAO | (13h 26m 22.99s , -65d 05m 03.1s) |   C |    60 | 16.8 |        
    4354 | 2021-08-05 01:14:16 |         MASTER-SAAO | (14h 50m 23.69s , -63d 10m 47.3s) |   C |    60 | 16.3 |        
    4446 | 2021-08-05 01:15:48 |         MASTER-SAAO | (13h 29m 40.34s , -66d 59m 10.0s) |   C |    60 | 16.7 |        
    4525 | 2021-08-05 01:17:07 |         MASTER-SAAO | (13h 50m 11.90s , -66d 57m 59.9s) |   C |    60 | 16.8 |        
    4605 | 2021-08-05 01:18:27 |         MASTER-SAAO | (13h 56m 41.25s , -68d 52m 47.8s) |   C |    60 | 17.3 |        
    4697 | 2021-08-05 01:19:59 |         MASTER-SAAO | (14h 22m 32.65s , -68d 52m 36.8s) |   C |    60 | 17.2 |        
Filter C is a clear (unfiltred) band. 


The observation and reduction will continue. 
The message may be cited.

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