GCN Circular 31770

V.Lipunov, A.Kuznetsov, O.Gress,E.Gorbovskoy, N.Tyurina, P.Balanutsa, K.Zhirkov,
A.Chasovnikov, D.Vlasenko, G.Antipov, V.Senik, D.Kuvshinov, V.Topolev,
Ya.Kechin, Yu.Tselik (Lomonosov Moscow State University, SAI, Physics Department),
C.Francile, R. Podesta, C.Lopez, F. Podesta (Observatorio Astronomico Felix Aguilar OAFA),
D.A.H.Buckley (SAAO),
R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias),
L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.Corella,
L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory),
N.M.Budnev (ISU,API),
A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),
A. Gabovich, V.Yurkov (Blagoveschensk Educational State University)

MASTER-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, 
vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the SWIFT BAT GRB 220319A (GRB220319.74, trigger No 1098132,
14h 32m 49.68s , +61d 17m 20.4s, R=0.05 Page et al. GCN 31769
Not found
 
 
 
https://gcn.gsfc.nasa.gov/other/1098132.swift )
errorbox  38 sec after notice time (62 sec after trigger time) at 
2022-03-19 17:41:35 UT, with upper limit up to  15.6 mag .
The observations began at zenith distance = 57 deg. The sun  altitude  is -19.9 deg.

The galactic latitude b = 52 deg., longitude l = 103 deg.


Real time updated cover map and OT, that can be discovered,will be available here:
https://master.sai.msu.ru/site/master2/observ.php?id=1915275

We obtain a following upper limits.

Tmid-T0  |          Site       |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________

       67 |      MASTER-Tavrida |  P\ |    10 | 14.9 |
      102 |      MASTER-Tavrida |  P\ |    20 | 15.6 |
      142 |      MASTER-Tavrida |  P\ |    20 | 15.4 |


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