{
  "circularId": 38473,
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "createdOn": 1733718645323,
  "submittedHow": "email-legacy",
  "bibcode": "2024GCN.38473....1L",
  "eventId": "GRB 241207B",
  "body": "V.Lipunov, E.Gorbovskoy, N.Tiurina,  P.Balanutsa, , D.Vlasenko, I.Panchenko,\nA.Kuznetsov,  G.Antipov,  A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin,\nV.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),\nO.Gress, N.Budnev (ISU),\nC.Francile,  F. Podesta, R.Podesta, E. Gonzalez  (Observatorio Astronomico Felix Aguilar (OAFA),\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),\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-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) started inspect of the Fermi GRB 241207B ( Fermi GBM team, GCN 38461) errorbox  1 days 24239 sec after notice time and 1 days 24273 sec after trigger time at 2024-12-09 03:35:34 UT, with upper limit up to  17.2 mag. Observations started at twilight.  The observations began at zenith distance = 78 deg. The sun  altitude  is -15.5 deg. \n\nThe galactic latitude b = 31 deg., longitude l = 353 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=2699915\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n  110763 | 2024-12-09 03:35:34 |      MASTER-Tavrida | (15h 02m 40.58s , -11d 54m 25.0s) |   C |   180 | 16.6 |        \n  110959 | 2024-12-09 03:38:50 |      MASTER-Tavrida | (15h 10m 53.06s , -11d 52m 58.7s) |   C |   180 | 17.2 |        \n  111160 | 2024-12-09 03:42:12 |      MASTER-Tavrida | (15h 02m 36.75s , -11d 53m 42.6s) |   C |   180 | 15.2 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.\n\n",
  "subject": "Fermi GRB 241207B: Global MASTER-Net observations report"
}