{
  "bibcode": "2021GCN.30906....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-Tavrida robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Lomonosov MSU, SAI Crimea astronomical station) was pointed to the Swift GRB211001.03 (trigger No 1076121,04h 45m 52.80s , +12d 02m 24.0s, R=0.05) errorbox 41 sec after trigger time at 2021-10-01 00:44:01 UT, with upper limit up to  19.1 mag. The observations began at zenith distance = 35 deg. The sun  altitude  is -31.3 deg. \n\nThe galactic latitude b = -20 deg., longitude l = 187 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=1738591\n\nWe obtain a following upper limits.  \n\nTmid-T0  |          Site       |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____|_______|______|________\n\n      47 |      MASTER-Tavrida |  P\\ |    10 | 14.7 |        \n      76 |      MASTER-Tavrida |  P\\ |    10 | 14.8 |        \n     110 |      MASTER-Tavrida |  P\\ |    20 | 15.1 |        \n     154 |      MASTER-Tavrida |  P\\ |    30 | 14.8 |        \n     209 |      MASTER-Tavrida |  P\\ |    40 | 15.2 |        \n     273 |      MASTER-Tavrida |  P\\ |    50 | 15.8 |        \n     347 |      MASTER-Tavrida |  P\\ |    60 | 15.9 |        \n     436 |      MASTER-Tavrida |  P\\ |    80 | 15.9 |        \n     545 |      MASTER-Tavrida |  P\\ |   100 | 15.9 |        \n     674 |      MASTER-Tavrida |  P\\ |   120 | 16.0 |        \n    1099 |      MASTER-Tavrida |   C |   180 | 18.4 |        \n    1298 |      MASTER-Tavrida |   C |   180 | 18.5 |        \n    1566 |      MASTER-Tavrida |   C |   180 | 18.6 |        \n    1765 |      MASTER-Tavrida |   C |   180 | 18.7 |        \n    1964 |      MASTER-Tavrida |   C |   180 | 18.8 |        \n    2163 |      MASTER-Tavrida |   C |   180 | 18.9 |        \n    2362 |      MASTER-Tavrida |   C |   180 | 18.9 |        \n    2561 |      MASTER-Tavrida |   C |   180 | 19.0 |        \n    2760 |      MASTER-Tavrida |   C |   180 | 19.1 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.",
  "circularId": 30906,
  "createdOn": 1633053515000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Swift GRB211001.03: Global MASTER-Net observations report",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 211001.03"
}