{
  "createdOn": 1793398580306,
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "submittedHow": "email",
  "body": "D.Buckley (SAAO),\n\nV.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 (Lomonosov MSU)\n\nA. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity)\nA.Sosnovskij (Lomonosov MSU)\n\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory)\n\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\nR.Rebolo (The Instituto de Astrofisica de Canarias)\n\nO.Gress, N.Budnev(ISU)\n\nM. Segura,  F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA)\n\n\nMASTER-SAAO robotic telescope  [1]  located in South Africa (South African Astronomical Observatory) started inspect of the Fermi GRB 261030B ( Fermi GBM team, GCN 46118) errorbox  111 sec after notice time and 144 sec after trigger time at 2026-10-30 21:45:52 UT, with upper limit up to  18.5 mag. The observations began at zenith distance = 51 deg. The sun  altitude  is -43.1 deg. \n\nThe galactic latitude b = -22 deg., longitude l = 262 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=3532170\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n     160 | 2026-10-30 21:45:52 |         MASTER-SAAO | (06h 11m 48.56s , -52d 11m 55.8s) |   C |    30 | 17.4 |        \n     160 | 2026-10-30 21:45:52 |         MASTER-SAAO | (06h 08m 55.01s , -51d 56m 32.2s) |   C |    30 | 17.3 |        \n     223 | 2026-10-30 21:46:50 |         MASTER-SAAO | (06h 18m 25.85s , -53d 12m 00.6s) |   C |    40 | 17.6 |        \n     278 | 2026-10-30 21:46:50 |         MASTER-SAAO | (06h 18m 25.85s , -53d 12m 00.6s) |   C |   150 | 18.5 |  Coadd \n     223 | 2026-10-30 21:46:50 |         MASTER-SAAO | (06h 15m 28.48s , -52d 56m 37.8s) |   C |    40 | 17.6 |        \n     278 | 2026-10-30 21:46:50 |         MASTER-SAAO | (06h 15m 28.47s , -52d 56m 37.9s) |   C |   150 | 18.4 |  Coadd \n     287 | 2026-10-30 21:47:49 |         MASTER-SAAO | (06h 18m 25.91s , -53d 12m 00.6s) |   C |    50 | 18.0 |        \n     287 | 2026-10-30 21:47:49 |         MASTER-SAAO | (06h 15m 28.48s , -52d 56m 38.5s) |   C |    50 | 18.0 |        \n     361 | 2026-10-30 21:48:58 |         MASTER-SAAO | (06h 18m 25.91s , -53d 12m 00.7s) |   C |    60 | 18.0 |        \n     361 | 2026-10-30 21:48:58 |         MASTER-SAAO | (06h 15m 28.44s , -52d 56m 39.1s) |   C |    60 | 17.8 |        \n     622 | 2026-10-30 21:53:19 |         MASTER-SAAO | (06h 44m 59.79s , -52d 59m 04.0s) |   C |    60 | 16.9 |        \n     682 | 2026-10-30 21:53:19 |         MASTER-SAAO | (06h 44m 59.79s , -52d 59m 03.9s) |   C |   180 | 17.1 |  Coadd \n     622 | 2026-10-30 21:53:19 |         MASTER-SAAO | (06h 42m 02.43s , -52d 43m 48.7s) |   C |    60 | 16.8 |        \n     682 | 2026-10-30 21:53:19 |         MASTER-SAAO | (06h 42m 02.43s , -52d 43m 48.8s) |   C |   180 | 17.1 |  Coadd \n     701 | 2026-10-30 21:54:38 |         MASTER-SAAO | (06h 44m 59.82s , -52d 59m 03.1s) |   C |    60 | 16.7 |        \n     701 | 2026-10-30 21:54:38 |         MASTER-SAAO | (06h 42m 02.41s , -52d 43m 48.4s) |   C |    60 | 16.7 |        \n     780 | 2026-10-30 21:55:57 |         MASTER-SAAO | (06h 44m 59.77s , -52d 59m 02.8s) |   C |    60 | 15.8 |        \n     780 | 2026-10-30 21:55:57 |         MASTER-SAAO | (06h 42m 02.31s , -52d 43m 48.4s) |   C |    60 | 16.0 |        \n     859 | 2026-10-30 21:57:16 |         MASTER-SAAO | (06h 44m 59.72s , -52d 59m 02.8s) |   C |    60 | 17.9 |        \n     859 | 2026-10-30 21:57:16 |         MASTER-SAAO | (06h 42m 02.22s , -52d 43m 48.8s) |   C |    60 | 17.7 |        \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",
  "eventId": "GRB 261030B",
  "circularId": 46119,
  "subject": "Fermi GRB 261030B: Global MASTER-Net observations report"
}