[vsnet-grb-info 28476] Fermi trigger No 649524889: Global MASTER-Net observations report

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  30579
SUBJECT: Fermi  trigger No 649524889: Global MASTER-Net observations report 
DATE:    21/08/01 19:30:51 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-Kislovodsk robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB210801.65 (trigger No 649524889,22h 20m 43.20s , +00d 01m 12.0s, R=5.4) errorbox  12985 sec after notice time and 13013 sec after trigger time at 2021-08-01 19:11:38 UT, with upper limit up to  19.2 mag. The observations began at zenith distance = 65 deg. The sun  altitude  is -22.6 deg. 

The galactic latitude b = -45 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=1677974

We obtain a following upper limits.  

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

   13103 | 2021-08-01 19:11:38 |   MASTER-Kislovodsk | (22h 19m 27.14s , +00d 07m 58.1s) |   C |   180 | 17.7 |        
   13103 | 2021-08-01 19:11:38 |   MASTER-Kislovodsk | (22h 23m 39.47s , -00d 16m 37.7s) |   C |   180 | 18.6 |        
   13283 | 2021-08-01 19:11:38 |   MASTER-Kislovodsk | (22h 23m 39.47s , -00d 16m 37.7s) |   C |   540 | 19.2 |  Coadd 
   13303 | 2021-08-01 19:14:58 |   MASTER-Kislovodsk | (22h 19m 30.19s , +00d 09m 53.9s) |   C |   180 | 17.7 |        
   13303 | 2021-08-01 19:14:58 |   MASTER-Kislovodsk | (22h 23m 42.67s , -00d 14m 42.9s) |   C |   180 | 18.6 |        
   13504 | 2021-08-01 19:18:18 |   MASTER-Kislovodsk | (22h 19m 23.41s , +00d 08m 57.5s) |   C |   180 | 17.9 |        
   13504 | 2021-08-01 19:18:18 |   MASTER-Kislovodsk | (22h 23m 36.12s , -00d 15m 39.7s) |   C |   180 | 18.6 |        
   13704 | 2021-08-01 19:21:39 |   MASTER-Kislovodsk | (22h 19m 24.17s , +00d 10m 02.2s) |   C |   180 | 17.6 |        
   13704 | 2021-08-01 19:21:39 |   MASTER-Kislovodsk | (22h 23m 37.16s , -00d 14m 34.5s) |   C |   180 | 18.5 |        
Filter C is a clear (unfiltred) band. 


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