{
  "bibcode": "2019GCN.26065....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, F.Balakin,N.Tyurina,P.Balanutsa,A.Kuznetsov, V.Vladimirov, D. Vlasenko, I.Gorbunov,\nD.Zimnukhov,V.Senik, T.Pogrosheva, K.Pozdnyakov,A.Chasovnikov, V.Topolev, D.Kuvshinov(Lomonosov Moscow State University, SAI,Physics Department),\nR. Podesta, C.Lopez, F. Podesta, C.Francile(Observatorio Astronomico FelixAguilar OAFA),\nH.Levato(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),\nR. Rebolo, M. Serra(The Instituto de Astrofisica de Canarias),\nD. Buckley(South African Astronomical Observatory),\nO.A. Gres, N.M. Budnev, O.Ershova(Irkutsk State University, API),\nA. Tlatov, D. Dormidontov(Kislovodsk Solar Station of the Pulkovo Observatory),\nV. Yurkov, A. Gabovich, Yu. Sergienko(Blagoveschensk Educational State University)\n\nMASTER-OAFA \n(MASTER Global Robotic Net http://observ.pereplet.ru, Lipunov et al.,2010,Advances in Astronomy, vol.2010, 30L)\nlocated in Argentina (OAFA observatory of San Juan National University) \nwas pointed to the SWIFT GRB191024A\n(Page et al.GCN #26063, Beardmore et al. GCN 26064 trigger No 931242, XRT R.A.Dec(2000)=00h 40m 27.53s -67d 08' 42.2\")\nerrorbox  37 sec after trigger time at 2019-10-24 04:43:29 UT,\nwith upper limit up to  14.4 on 10s images (18.2 mag on 1800s sum)\nThere is no OT on first images.\n\nThe observations began at zenith distance = 38 deg. The sun  altitude  was -47.1 deg.\n\nThe galactic latitude b = -60 deg., longitude l = 98 deg.\n\nReal time updated cover map and OT discovered available here:\nhttps://master.sai.msu.ru/site/master2/event.php?id=1175693\n\nWe obtained the following upper limits:\n\nTmid-T0  |          Site       |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____|_______|______|________\n\n       42 |         MASTER-OAFA |   C |    10 | 14.4 |\n       83 |         MASTER-OAFA |   C |    10 | 13.8 |\n      131 |         MASTER-OAFA |   C |    20 | 14.5 |\n      187 |         MASTER-OAFA |   C |    30 | 14.6 |\n      237 |         MASTER-OAFA |   C |   130 | 15.3 |  Coadd\n      253 |         MASTER-OAFA |   C |    40 | 14.3 |\n      335 |         MASTER-OAFA |   C |    60 | 14.9 |\n      436 |         MASTER-OAFA |   C |    80 | 15.6 |\n      546 |         MASTER-OAFA |   C |   300 | 16.1 |  Coadd\n      558 |         MASTER-OAFA |   C |   100 | 15.2 |\n      700 |         MASTER-OAFA |   C |   120 | 15.4 |\n      866 |         MASTER-OAFA |   C |   150 | 16.3 |\n     1873 |         MASTER-OAFA |   C |  1800 | 17.7 |  Coadd\n     6099 |         MASTER-OAFA |   C |  1800 | 18.2 |  Coadd\n\n\nReduction will be continued.\nThe message may be cited.",
  "circularId": 26065,
  "createdOn": 1571911409000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB191024A: MASTER optical observation",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 191024A"
}