[vsnet-grb-info 28543] Fermi trigger No 650687034: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  30646
SUBJECT: Fermi  trigger No 650687034: Global MASTER-Net observations report 
DATE:    21/08/15 02:31:33 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 GRB210815.10 (trigger No 650687034,23h 27m 02.40s , -31d 31m 48.0s, R=2.23) errorbox  68 sec after notice time and 117 sec after trigger time at 2021-08-15 02:25:46 UT, with upper limit up to  16.3 mag. The observations began at zenith distance = 63 deg. The sun  altitude  is -43.8 deg. 

The galactic latitude b = -72 deg., longitude l = 15 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=1690943

We obtain a following upper limits.  

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

     127 | 2021-08-15 02:25:46 |          MASTER-IAC | (23h 25m 49.63s , -34d 34m 23.8s) |  P| |    20 | 16.3 |        


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