{
  "bibcode": "2021GCN.31238....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-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB 211216A ( Fermi GBM team, GCN 31237) errorbox 2 sec after trigger time at 2021-12-16 06:45:54 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 56 deg. The sun  altitude  is -26.7 deg. \n\nThe galactic latitude b = -48 deg., longitude l = 283 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=1816175\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n      12 | 2021-12-16 06:45:54 |         MASTER-OAFA | (02h 53m 22.27s , -62d 10m 10.3s) |   C |    20 | 17.1 |        \n      57 | 2021-12-16 06:45:54 |         MASTER-OAFA | (02h 53m 22.27s , -62d 10m 10.4s) |   C |   110 | 17.7 |  Coadd \n      57 | 2021-12-16 06:46:33 |         MASTER-OAFA | (03h 00m 27.56s , -62d 56m 56.5s) |   C |    30 | 17.2 |        \n     111 | 2021-12-16 06:47:23 |         MASTER-OAFA | (02h 53m 25.66s , -62d 10m 21.1s) |   C |    40 | 16.5 |        \n     176 | 2021-12-16 06:48:23 |         MASTER-OAFA | (02h 53m 18.92s , -62d 10m 50.7s) |   C |    50 | 17.3 |        \n     253 | 2021-12-16 06:49:35 |         MASTER-OAFA | (02h 53m 18.87s , -62d 09m 50.3s) |   C |    60 | 17.6 |        \n     420 | 2021-12-16 06:52:22 |         MASTER-OAFA | (02h 40m 59.42s , -62d 49m 23.1s) |   C |    60 | 17.7 |        \n     499 | 2021-12-16 06:53:41 |         MASTER-OAFA | (02h 58m 51.51s , -62d 47m 34.8s) |   C |    60 | 17.7 |        \n     614 | 2021-12-16 06:55:01 |         MASTER-OAFA | (02h 57m 39.11s , -63d 45m 40.4s) |   C |   130 | 18.4 |        \n     778 | 2021-12-16 06:57:30 |         MASTER-OAFA | (02h 57m 41.60s , -63d 44m 08.1s) |   C |   160 | 18.4 |        \n     968 | 2021-12-16 07:00:29 |         MASTER-OAFA | (02h 57m 35.23s , -63d 45m 07.3s) |   C |   180 | 18.5 |        \n    1167 | 2021-12-16 07:03:49 |         MASTER-OAFA | (02h 57m 36.92s , -63d 44m 08.1s) |   C |   180 | 18.5 |        \n    1367 | 2021-12-16 07:07:08 |         MASTER-OAFA | (02h 57m 42.14s , -63d 45m 07.7s) |   C |   180 | 18.5 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.",
  "circularId": 31238,
  "createdOn": 1639638907000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Fermi GRB 211216A: Global MASTER-Net observations report",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 211216A"
}