{
  "bibcode": "2022GCN.32456....1L",
  "body": "V. Lipunov, V.Kornilov, E.Gorbovskoy, K.Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, D. Vlasenko, \nG.Antipov, D.Zimnukhov, V.Senik, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov,  D.Cheryasov, Ya.Kechin\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\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez \n(INAOE, Guillermo Haro Astrophysics Observatory),\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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 220810A ( Fermi GBM team, GCN 32455) errorbox  445 sec after notice time and 476 sec after trigger time at 2022-08-10 23:23:38 UT, with upper limit up to  18.3 mag. The observations began at zenith distance = 39 deg. The sun  altitude  is -71.2 deg. \n\nThe galactic latitude b = -22 deg., longitude l = 49 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=2053838\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n     521 | 2022-08-10 23:23:38 |         MASTER-SAAO | (20h 45m 02.76s , +02d 31m 33.6s) |   C |    90 | 17.6 |        \n     656 | 2022-08-10 23:25:37 |         MASTER-SAAO | (20h 36m 27.23s , +02d 32m 24.0s) |   C |   120 | 17.8 |        \n     821 | 2022-08-10 23:25:37 |         MASTER-SAAO | (20h 36m 27.24s , +02d 32m 24.0s) |   C |   450 | 18.3 |  Coadd \n     821 | 2022-08-10 23:28:08 |         MASTER-SAAO | (20h 36m 30.98s , +02d 34m 05.9s) |   C |   150 | 17.9 |        \n    1018 | 2022-08-10 23:31:09 |         MASTER-SAAO | (20h 36m 24.61s , +02d 33m 36.9s) |   C |   180 | 17.4 |        \n    1228 | 2022-08-10 23:34:40 |         MASTER-SAAO | (20h 36m 24.10s , +02d 34m 44.8s) |   C |   180 | 17.9 |        \n    1438 | 2022-08-10 23:38:10 |         MASTER-SAAO | (20h 36m 29.40s , +02d 33m 51.2s) |   C |   180 | 17.8 |        \n    1649 | 2022-08-10 23:41:41 |         MASTER-SAAO | (20h 36m 23.40s , +02d 32m 58.0s) |   C |   180 | 17.0 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.",
  "circularId": 32456,
  "createdOn": 1660176915000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Fermi GRB 220810A: Global MASTER-Net observations report",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 220810A"
}