TITLE:   GCN CIRCULAR
NUMBER:  33319
SUBJECT: Fermi  trigger No 697926015: Global MASTER-Net observations report 
DATE:    23/02/13 05:45:10 GMT
FROM:    Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>

V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, 
G.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin
(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
(Irkutsk State University, API),

L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez 
(INAOE, Guillermo Haro Astrophysics Observatory),

A. Tlatov, D. Dormidontov 
(Kislovodsk Solar Station of the Pulkovo Observatory),

A. Gabovich, V.Yurkov 
(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 GRB230212.85 (trigger No 697926015,03h 53m 26.40s , +44d 48m 36.0s, R=7.82) errorbox  12976 sec after notice time and 13013 sec after trigger time at 2023-02-12 23:57:04 UT, with upper limit up to  16.3 mag. The observations began at zenith distance = 80 deg. The sun  altitude  is -46.1 deg. 

The galactic latitude b = -6 deg., longitude l = 154 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2198557

We obtain a following upper limits.  

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

   13044 | 2023-02-12 23:57:04 |   MASTER-Kislovodsk | (03h 50m 39.52s , +45d 07m 10.4s) |   C |    60 | 14.9 |        
   15308 | 2023-02-13 00:34:49 |   MASTER-Kislovodsk | (03h 44m 38.44s , +48d 53m 30.2s) |   C |    60 | 13.9 |        
   15484 | 2023-02-13 00:37:44 |   MASTER-Kislovodsk | (03h 53m 35.23s , +50d 47m 23.9s) |   C |    60 | 16.3 |        
   15731 | 2023-02-13 00:41:52 |   MASTER-Kislovodsk | (04h 17m 27.90s , +50d 47m 11.3s) |   C |    60 | 15.2 |        
   15816 | 2023-02-13 00:43:16 |   MASTER-Kislovodsk | (03h 38m 28.49s , +52d 39m 14.2s) |   C |    60 | 13.3 |        
Filter C is a clear (unfiltred) band. 


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