{
  "bibcode": "2026GCN.45170....1L",
  "body": "V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, \nG.Antipov,  A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),\nO.Gress, N.Budnev (ISU),\nM. Segura,  F. Podesta, R.Podesta, E. Gonzalez  (Observatorio Astronomico Felix Aguilar (OAFA),\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),\nA.Sosnovskij (CrAO),\nA. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity),\nD.Buckley (SAAO),\nR.Rebolo (The Instituto de Astrofisica de Canarias),\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,\nA.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) \n\nMASTER-SAAO robotic telescope  [1]  located in South Africa (South African Astronomical Observatory) was pointed to the SVOM sb26071506 ( SVOM_group <svomgroup@bao.ac.cn> et al., GCN 45169) errorbox  273 sec after notice time and 2918 sec after trigger time at 2026-07-15 17:11:42 UT, with upper limit up to  18.1 mag. The observations began at zenith distance = 79 deg. The sun  altitude  is -17.5 deg. \n\nThe galactic latitude b = -37 deg., longitude l = 12 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=3429400\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n    2949 | 2026-07-15 17:11:42 |         MASTER-SAAO | (20h 39m 45.29s , -32d 45m 32.6s) |   C |    60 | 14.7 |        \n    5590 | 2026-07-15 17:55:44 |         MASTER-SAAO | (20h 39m 44.61s , -32d 46m 54.4s) |   C |    60 | 18.1 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.\n\n[1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023,  Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp.\nhttp : // www.pereplet.ru/lipunov/625.html\n",
  "createdOn": 1784138451063,
  "subject": "SVOM sb26071506: Global MASTER-Net observations report",
  "submittedHow": "email",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "eventId": "sb26071506",
  "circularId": 45170
}