{
  "bibcode": "2018GCN.22481....1L",
  "body": "V. Lipunov, E.Gorbovskoy, N.Tyurina, V.Kornilov, D.Zimnukhov, V.Vladimirov, \nA.Krylov, I.Gorbunov, P.Balanutsa, A.Kuznetsov, V.Chazov, D. Kuvshinov\n(Lomonosov Moscow State University, SAI),\n\nR. Rebolo, M. Serra-Ricart\n(The Instituto de Astrofisica de Canarias),\n\nR.Podesta, C.Lopez, F. Podesta\n(Observatorio Astronomico Felix Aguilar (OAFA),National University of San Juan, Argentina),\n\nH. Levato, C. Saffe\n(Instituto de Ciencias Astronomicas,de la Tierra y del Espacio (ICATE), San Juan, Argentina),\n\nD.Buckley, S. Potter\n(South African Astronomical Observatory),\n\nO.Gres,  N.M.Budnev\n(Irkutsk State University),\n\nA. Tlatov, V.Senik, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory)\n\nV.Yurkov, A.Gabovich, Yu.Sergienko\n(Blagoveschensk Educational State University, Blagoveschensk),\n\nMASTER-IAC and MASTER-OAFA automatically pointed to GRB 180314A (D'Avanzo et al. GCN 22478, Osborne et al. GCN 22480)\nwith optical transient detection by MASTER auto-detection system.\nWe confirm Swift and GROND OT (D'Avanzo et al. GCN 22478, Bolmer et al. GCN 22479).\n\nThere are also synchronous images from MASTER very wide field cameras (MASTER-VWFC).\n\nMASTER-IAC  robotic telescope (MASTER-Net: http://observ.pereplet.ru ,Lipunov et al. Advances in Astronomy, 2010, 30L) \nlocated in Teyde observatory(Spain) was pointed to the  GRB180314.03 7 sec after notice time \nand 100 sec after trigger time at 2018-03-14 00:45:11 UT.\nOn our first (20s exposure)  set we  found 1 optical transient within SWIFT error-box \n(ra=99.275 dec=-24.4908 r=0.05) :\n\n\n  T-Tmid      Date      Time       Expt.        Ra                Dec         Mag\n---------|---------------------|-------|-----------------|-----------------|-------\n      110   2018-03-14 00:45:11      20   (  6h 37m 03.7s , -24d 29m 45.8s)    15.36\n\nThe 5-sigma upper limit on the first 20s image is 17.2mag\n\nThe observations made on zenit distance = 83 degrees, galaxy latitude b = -13 degree.\nThe moon (12 % bright part) below the horizon (The altitude of the Moon is -59 degree ).\nThe sun  altitude  is -63.5 degree.\n\n\n\nMASTER-OAFA robotic telescope located in Argentina was pointed to the  GRB180314A\n17 sec after notice time and 110 sec after trigger time at 2018-03-14 00:45:21 UT.\nOn our first (20s exposure)  set we  found 1 optical transient within SWIFT error-box \n(ra=99.275 dec=-24.4908 r=0.05)\n\n\n  T-Tmid      Date      Time       Expt.        Ra                Dec           Mag\n---------|---------------------|-------|-----------------|-----------------|-------\n      120   2018-03-14 00:45:21      20   (  6h 37m 03.7s , -24d 29m 45.8s)    15.60\n\nThe 5-sigma upper limit on first 20s image is 18.4 mag\n\nThe observations made on zenit distance = 15 degrees, galaxy latitude b = -13 degree.\nThe moon (12 % bright part) below the horizon (The altitude of the Moon is -37 degree ).\nThe sun  altitude  is -23.5 degree.\n\nThe message may be cited.",
  "circularId": 22481,
  "createdOn": 1521014677000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 180314A: MASTER-Net OT dtetction",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 180314A"
}