{
  "bibcode": "2021GCN.30412....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, \nV.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,\nD.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, O.Ershova \n(Irkutsk State University, API),\n\nA. Tlatov, D. Dormidontov \n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nV. Yurkov, A. Gabovich, Yu. Sergienko \n(Blagoveschensk Educational State University)\n\n\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) was pointed to the Swift GRB210708.10 (trigger No 1059460,11h 34m 47.76s , -49d 11m 13.2s, R=0.05) errorbox  63 sec after notice time and 90 sec after trigger time at 2021-07-08 02:27:07 UT, with upper limit up to  17.8 mag. The observations began at zenith distance = 62 deg. The sun  altitude  is -59.3 deg. \n\nThe galactic latitude b = 12 deg., longitude l = 291 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=1655482\n\nWe obtain a following upper limits.  \n\nTmid-T0  |          Site       |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____|_______|______|________\n\n      96 |         MASTER-OAFA |   C |    10 | 17.2 |        \n     125 |         MASTER-OAFA |   C |    10 | 17.1 |        \n     179 |         MASTER-OAFA |   C |    30 | 17.8 |        \n     229 |         MASTER-OAFA |   C |    30 | 17.8 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.",
  "circularId": 30412,
  "createdOn": 1625711949000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Swift GRB210708.10: Global MASTER-Net observations report",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 210708.10"
}