{
  "bibcode": "2021GCN.30398....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-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) was pointed to the Integral GRB210707.02 (trigger No 9295,19h 34m 53.86s , +21d 53m 33.3s, R=0.0521667) errorbox 22 sec after trigger time at 2021-07-07 00:33:55 UT, with upper limit up to  19.3 mag. The observations began at zenith distance = 57 deg. The sun  altitude  is -63.9 deg. \n\nMASTER-Kislovodsk robotic telescope  located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) was pointed to the Integral GRB210707.02 errorbox 56 sec after trigger time at 2021-07-07 00:34:29 UT, with upper limit up to  15.2 mag. Observations started at twilight.  The observations began at zenith distance = 40 deg. The sun  altitude  is -10.0 deg. \n\nMASTER-IAC robotic telescope  located in Spain (IAC Teide Observatory) was pointed to the Integral GRB210707.02 errorbox 57 sec after trigger time at 2021-07-07 00:34:29 UT, with upper limit up to  18.0 mag. The observations began at zenith distance = 15 deg. The sun  altitude  is -38.8 deg. \n\nThe galactic latitude b =  0 deg., longitude l = 58 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=1654824\n\nWe obtain a following upper limits.  \n\nTmid-T0  |          Site       |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____|_______|______|________\n\n      28 |         MASTER-SAAO | P\\  |    10 | 17.4 |        \n      38 |         MASTER-SAAO | P\\  |    30 | 18.1 |  Coadd \n      49 |         MASTER-SAAO | P\\  |    10 | 17.5 |        \n      62 |   MASTER-Kislovodsk |  P| |    10 | 13.2 |        \n      62 |          MASTER-IAC |  P| |    10 | 16.8 |        \n      62 |          MASTER-IAC |  P- |    10 | 16.6 |        \n      71 |         MASTER-SAAO | P\\  |    10 | 17.5 |        \n      89 |          MASTER-IAC |  P| |    20 | 17.4 |        \n      89 |          MASTER-IAC |  P- |    20 | 17.1 |        \n      98 |   MASTER-Kislovodsk |  P| |    20 | 13.1 |        \n      99 |         MASTER-SAAO | P\\  |    20 | 18.0 |        \n     124 |         MASTER-SAAO | P\\  |    70 | 18.7 |  Coadd \n     121 |          MASTER-IAC |  P| |    20 | 17.3 |        \n     121 |          MASTER-IAC |  P- |    20 | 17.1 |        \n     131 |         MASTER-SAAO | P\\  |    20 | 18.0 |        \n     143 |   MASTER-Kislovodsk |  P| |    30 | 12.9 |        \n     156 |          MASTER-IAC |  P| |    30 | 17.7 |        \n     156 |          MASTER-IAC |  P- |    30 | 17.5 |        \n     168 |         MASTER-SAAO | P\\  |    30 | 18.2 |        \n     198 |   MASTER-Kislovodsk |  P| |    40 | 14.6 |        \n     201 |          MASTER-IAC |  P| |    40 | 17.9 |        \n     201 |          MASTER-IAC |  P- |    40 | 17.6 |        \n     216 |         MASTER-SAAO | P\\  |    40 | 17.5 |        \n     271 |         MASTER-SAAO | P\\  |   150 | 18.9 |  Coadd \n     261 |          MASTER-IAC |  P| |    50 | 18.0 |        \n     262 |   MASTER-Kislovodsk |  P| |    50 | 13.7 |        \n     273 |         MASTER-SAAO | P\\  |    50 | 18.6 |        \n     337 |   MASTER-Kislovodsk |  P| |    60 | 14.9 |        \n     341 |         MASTER-SAAO | P\\  |    60 | 18.6 |        \n     423 |         MASTER-SAAO | P\\  |    80 | 18.3 |        \n     533 |         MASTER-SAAO | P\\  |   300 | 19.3 |  Coadd \n     427 |   MASTER-Kislovodsk |  P| |    80 | 14.6 |        \n     525 |         MASTER-SAAO | P\\  |   100 | 18.8 |        \n     537 |   MASTER-Kislovodsk |  P| |   100 | 15.2 |        \n     648 |         MASTER-SAAO | P\\  |   120 | 18.8 |        \n     666 |   MASTER-Kislovodsk |  P| |   120 | 13.9 |        \n     790 |         MASTER-SAAO | P\\  |   140 | 19.0 |        \n     821 |   MASTER-Kislovodsk |  P| |   150 | 13.9 |        \n     957 |         MASTER-SAAO | P\\  |   170 | 18.7 |        \n\n\nThe observation and reduction will continue. \nThe message may be cited.",
  "circularId": 30398,
  "createdOn": 1625619429000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "Integral GRB210707.02: Global MASTER-Net observations report",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 210707.02"
}