{
  "body": "V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik,  D. Vlasenko,\nG.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij\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. Gress, N.M. Budnev, O.Ershova\n(Irkutsk State University, API),\n\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,\nA.R.Corella, L.H.Rodriguez\n(INAOE, Guillermo Haro Astrophysics Observatory),\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\nV. Yurkov, A. Gabovich\n(Blagoveschensk Educational State University)\n\nMASTER-Amur robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Russia (Blagoveshchensk State Pedagogical University) started inspect of the Fermi GRB240821.39 (trigger No 745925274,18h 00m 26.40s , +12d 39m 36.0s, R=13.44) errorbox  1 days 13691 sec after notice time and 1 days 13707 sec after trigger time at 2024-08-22 13:16:16 UT, with upper limit up to  16.6 mag. The observations began at zenith distance = 54 deg. The sun  altitude  is -21.5 deg. \n\nThe galactic latitude b = 16 deg., longitude l = 39 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=2570394\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n  100137 | 2024-08-22 13:16:16 |         MASTER-Amur | (18h 01m 53.93s , +01d 07m 49.1s) |   C |    60 | 14.1 |        \n  100137 | 2024-08-22 13:16:16 |         MASTER-Amur | (17h 54m 30.45s , +00d 38m 13.6s) |   C |    60 | 16.6 |        \n  101065 | 2024-08-22 13:31:45 |         MASTER-Amur | (18h 01m 59.58s , +01d 09m 01.7s) |   C |    60 | 14.0 |        \n  101065 | 2024-08-22 13:31:45 |         MASTER-Amur | (17h 54m 35.67s , +00d 39m 39.6s) |   C |    60 | 16.5 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.\n\n",
  "submittedHow": "email-legacy",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "bibcode": "2024GCN.37237....1L",
  "subject": "Fermi  trigger No 745925274: Global MASTER-Net observations report",
  "createdOn": 1724359541727,
  "circularId": 37237
}