[vsnet-grb-info 28208] Fermi trigger No 646194855: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  30311
SUBJECT: Fermi  trigger No 646194855: Global MASTER-Net observations report 
DATE:    21/06/24 05:30:09 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-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 GRB210624.11 (trigger No 646194855,19h 36m 50.40s , +26d 06m 00.0s, R=2.72) errorbox  11 sec after notice time and 8223 sec after trigger time at 2021-06-24 04:51:13 UT, with upper limit up to  17.9 mag. Observations started at twilight.  The observations began at zenith distance = 31 deg. The sun  altitude  is -15.1 deg. 

MASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB210624.11 errorbox  86 sec after notice time and 8298 sec after trigger time at 2021-06-24 04:52:28 UT, with upper limit up to  17.1 mag. The observations began at zenith distance = 59 deg. The sun  altitude  is -81.7 deg. 

The galactic latitude b =  2 deg., longitude l = 61 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1643595

We obtain a following upper limits.  

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

    8313 | 2021-06-24 04:51:13 |          MASTER-IAC | (19h 35m 51.54s , +26d 02m 38.3s) |  P| |   180 | 17.0 |        
    8313 | 2021-06-24 04:51:13 |          MASTER-IAC | (19h 34m 53.17s , +26d 08m 53.3s) |  P- |   180 | 16.9 |        
    8388 | 2021-06-24 04:52:28 |         MASTER-OAFA | (19h 33m 43.33s , +25d 21m 23.4s) |   C |   180 | 16.9 |        
    8513 | 2021-06-24 04:54:33 |          MASTER-IAC | (19h 35m 51.80s , +26d 03m 35.7s) |  P| |   180 | 17.3 |        
    8513 | 2021-06-24 04:54:33 |          MASTER-IAC | (19h 34m 53.47s , +26d 09m 50.2s) |  P- |   180 | 17.1 |        
    8588 | 2021-06-24 04:55:47 |         MASTER-OAFA | (19h 33m 40.33s , +25d 23m 06.6s) |   C |   180 | 17.1 |        
    8713 | 2021-06-24 04:57:53 |          MASTER-IAC | (19h 35m 56.18s , +26d 02m 33.2s) |  P| |   180 | 17.3 |        
    8713 | 2021-06-24 04:57:53 |          MASTER-IAC | (19h 34m 57.91s , +26d 08m 47.1s) |  P- |   180 | 17.1 |        
    8787 | 2021-06-24 04:59:07 |         MASTER-OAFA | (19h 33m 40.27s , +25d 21m 30.5s) |   C |   180 | 17.0 |        
    8913 | 2021-06-24 05:01:13 |          MASTER-IAC | (19h 35m 51.33s , +26d 01m 31.1s) |  P| |   180 | 17.3 |        
    8913 | 2021-06-24 05:01:13 |          MASTER-IAC | (19h 34m 53.09s , +26d 07m 44.8s) |  P- |   180 | 17.2 |        
    8987 | 2021-06-24 05:02:27 |         MASTER-OAFA | (19h 33m 42.76s , +25d 23m 18.5s) |   C |   180 | 17.0 |        
    9053 | 2021-06-24 05:04:33 |          MASTER-IAC | (19h 46m 01.54s , +25d 48m 42.7s) |   C |    60 | 17.9 |        
    9126 | 2021-06-24 05:05:46 |         MASTER-OAFA | (19h 33m 43.90s , +23d 17m 25.3s) |   C |    60 | 16.9 |        
    9406 | 2021-06-24 05:10:26 |         MASTER-OAFA | (19h 42m 27.96s , +23d 15m 06.6s) |   C |    60 | 16.9 |        
Filter C is a clear (unfiltred) band. 


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