{
  "bibcode": "2021GCN.31245....1L",
  "body": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, \nD. Vlasenko, G.Antipov, D.Zimnukhov, V.Senik, T.Pogrosheva, E.Minkina,\nA.Chasovnikov, V.Topolev, V.Grinshpun, D.Kuvshinov,  D. Cheryasov\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile \n(Observatorio Astronomico Felix Aguilar OAFA),\n\nR. Rebolo, M. Serra \n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley \n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev\n(Irkutsk State University, API),\n\nA. Tlatov, D. Dormidontov \n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nA. Gabovich, V.Yurkov \n(Blagoveschensk Educational State University)\n\n\nMASTER-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 211216.30 (trigger No 348073,21h 05m 28.32s , +15d 55m 01.2s, R=0.55) errorbox  27392 sec after notice time and 27507 sec after trigger time at 2021-12-16 14:46:05 UT, with upper limit up to  16.6 mag. Observations started at twilight.  The observations began at zenith distance = 39 deg. The sun  altitude  is -12.2 deg. \n\nThe galactic latitude b = -21 deg., longitude l = 65 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=1816191\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n   27598 | 2021-12-16 14:46:05 |   MASTER-Kislovodsk | (21h 05m 47.09s , +15d 56m 54.7s) |   C |   180 | 16.6 |        \n   27598 | 2021-12-16 14:46:05 |   MASTER-Kislovodsk | (21h 05m 31.20s , +16d 19m 48.2s) |   C |   180 | 15.6 |        \n   28187 | 2021-12-16 14:56:54 |   MASTER-Kislovodsk | (21h 08m 10.18s , +16d 25m 54.5s) |   C |    60 | 15.7 |        \n   28187 | 2021-12-16 14:56:54 |   MASTER-Kislovodsk | (21h 03m 34.62s , +16d 48m 26.1s) |   C |    60 | 15.0 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.",
  "circularId": 31245,
  "createdOn": 1639667586000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "IceCube Alert 211216.30: Global MASTER-Net observations report",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>"
}