TITLE:   GCN CIRCULAR
NUMBER:  33074
SUBJECT: IceCube Alert 221216.25: Global MASTER-Net observations report 
DATE:    22/12/16 18:00:16 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) was pointed to the IceCube Alert 221216.25 (trigger No 43495485,00h 29m 14.64s , +11d 14m 24.0s, R=0.94) errorbox  42018 sec after notice time and 42068 sec after trigger time at 2022-12-16 17:41:22 UT, with upper limit up to  19.8 mag. The observations began at zenith distance = 39 deg. The sun  altitude  is -43.7 deg. 

The galactic latitude b = -51 deg., longitude l = 115 deg.


Real time updated cover map and OT discovered available here: 
https://master.sai.msu.ru/site/master2/observ.php?id=2184743

We obtain a following upper limits.  

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

   42159 | 2022-12-16 17:41:22 |   MASTER-Kislovodsk | (00h 29m 25.95s , +11d 18m 09.6s) |   C |   180 | 19.3 |        
   42159 | 2022-12-16 17:41:22 |   MASTER-Kislovodsk | (00h 29m 23.28s , +11d 41m 33.4s) |   C |   180 | 19.8 |        
   42540 | 2022-12-16 17:48:43 |   MASTER-Kislovodsk | (00h 31m 27.83s , +10d 44m 41.7s) |   C |    60 | 17.6 |        
   42540 | 2022-12-16 17:48:43 |   MASTER-Kislovodsk | (00h 27m 09.75s , +11d 06m 54.8s) |   C |    60 | 18.9 |        
   42798 | 2022-12-16 17:53:01 |   MASTER-Kislovodsk | (00h 31m 20.90s , +08d 51m 00.0s) |   C |    60 | 18.3 |        
   42798 | 2022-12-16 17:53:01 |   MASTER-Kislovodsk | (00h 27m 05.10s , +09d 13m 09.0s) |   C |    60 | 19.4 |        
Filter C is a clear (unfiltred) band. 


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