{
  "bibcode": "2018GCN.23322....1L",
  "body": "V. Lipunov, E. Gorbovskoy, V.Kornilov, D.Kuvshinov, \nN.Tyurina, P.Balanutsa,A.Kuznetsov, V.V.Chazov, D. Vlasenko\nLomonosov Moscow State University, Sternberg Astronomical Institute\n\nD.Svinkin (Ioffe Institute, Russia)\n\nR. Podesta, F. Podesta, C. Lopez, C.Francile\nObservatorio Astronomico Felix Aguilar (OAFA)\n\nHugo Levato Instituto de Ciencias Astronomicas, de la Tierra y del Espacio \n(ICATE)\n\nR. Rebolo, M. Serra, N. Lodieu, G. Israelian, L. Suarez-Andres\nThe Instituto de Astrofisica de Canarias\n\nD. Buckley,\nSouth African Astronomical Observatory\n\nA. Tlatov, V.Senik, A.V. Parhomenko, D. Dormidontov\nKislovodsk Solar Station of the Pulkovo Observatory\n\nO. Gres, N.M. Budnev, Yu.Ishmuhametova\nApplied Physics Institute of Irkutsk State University\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\nBlagoveschensk Educational State University, Blagoveschensk\n\n\nMASTER-SAAO robotic telescope (MASTER-Net: http://observ.pereplet.ru, \nLipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in \nSouth Africa (South African Astronomical Observatory) was starting survey \non the IPN  GRB181008.88  error-box (Svinkin et al., GCN 23318) \n26827 sec after notice time and 1 days 8072 sec after trigger time at \n2018-10-09 23:19:04 UT. The 5-sigma upper limit on our first (180s \nexposure)  set is about 19.0 mag\nLink to GRB181008.88 page: \nhttps://master.sai.msu.ru/site/master2/ligo.php?af=1&wh=tabs(grbtime-'2018-10-08+21:04:32')%3C'1+minutes'::interval\nThe message may be cited.\n\n\nThe galactic latitude b = -60 deg., longitude l = 98 deg.\nThe observations made on zenit distance = 42 deg.The moon ( 1 % bright \npart) below the horizon (The altitude of the Moon is -52 deg. ).\nThe sun  altitude  is -49.0 deg.\nThe object can be observed till 2018-10-10 03:24:40\n\n\n\nMASTER-Kislovodsk robotic telescope (MASTER-Net: \nhttp://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, \nvol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station \nof Pulkovo observatory) was starting survey on the IPN  GRB181008.88 \nerror-box   28923 sec after notice time \nand 1 days 10168 sec after trigger time at 2018-10-09 23:54:00 UT. The \n5-sigma upper limit on our first (180s exposure)  set is about 17.4 mag\nLink to GRB181008.88 page: \nhttps://master.sai.msu.ru/site/master2/ligo.php?af=1&wh=tabs(grbtime-'2018-10-08+21:04:32')%3C'1+minutes'::interval\nThe message may be cited.\n\nThe observations made on zenit distance = 69 deg.The moon ( 1 % bright \npart) below the horizon (The altitude of the Moon is -43 deg. ).\nThe sun  altitude  is -36.1 deg.\nThe object can be observed till 2018-10-10 01:57:56\n\nMASTER-Tavrida robotic telescope (MASTER-Net: http://observ.pereplet.ru, \nLipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in \nRussia (Lomonosov MSU, SAI Crimea astronomical station) was starting \nsurvey on the IPN  GRB181008.88 error-box   32631 sec after notice time and 1 days 13876 sec after trigger \ntime at 2018-10-10 00:55:48 UT. The 5-sigma upper limit on our first (180s \nexposure)  set is about 17.9 mag\n\nThe galactic latitude b = -60 deg., longitude l = 98 deg.\nThe observations made on zenit distance = 74 deg.The moon ( 1 % bright \npart) below the horizon (The altitude of the Moon is -39 deg. ).\nThe sun  altitude  is -31.3 deg.\nThe object can be observed till 2018-10-10 02:32:31\n\n\nMASTER-OAFA robotic telescope (MASTER-Net: http://observ.pereplet.ru, \nLipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in \nArgentina (OAFA observatory of San Juan National University) was starting \nsurvey on the IPN  GRB181008.88 error-box   1 days 33629 sec after trigger time at 2018-10-10 03:35:27 UT. \nThe 5-sigma upper limit on our 3-th (180s exposure)  set is about 17.6 mag\nLink to GRB181008.88 page: \nhttps://master.sai.msu.ru/site/master2/ligo.php?af=1&wh=tabs(grbtime-'2018-10-08+21:04:32')%3C'1+minutes'::interval\nThe message may be cited.\n\n\nThe galactic latitude b = -60 deg., longitude l = 98 deg.\nThe observations made on zenit distance = 32 deg.The moon ( 1 % bright \npart) below the horizon (The altitude of the Moon is -44 deg. ).\nThe sun  altitude  is -50.0 deg.\nThe object can be observed till 2018-10-10 09:24:14\n\nThe total MASTER cover map is available at \nhttp://master.sai.msu.ru/static//IPN/db/GRB181008.88/img/ligo_master_2018-10-10-08-31-15.eb.zoom.1.png\n\nMASTER OT J075512.66-414512.0 detection - long variable star\n\nMASTER-SAAO auto-detection system ( Lipunov et al., \"MASTER Global Robotic \nNet\", Advances in Astronomy, 2010, 30L )\n  discovered OT source at (RA, Dec) = 07h 55m 12.66s -41d 45m 12.0s on \n2018-10-09.99672 UT.\nThe OT unfiltered magnitude is 12.2m (mlim=19.0).\nThe OT is seen in 4 images.\nThis OT was observed at MASTER-OAFA on 2017-09-23 08:08:47 with unfiltered \nm_OT=12.4.\nWe have reference image on  on 2015-01-11 21:25:04.129 UT with  unfiltered \nm_OT=14.9m (MASTER-SAAO).\n\nThe discovery and reference images are available at\nhttp://master.sai.msu.ru/static/OT/075512.66-414512.0.png\n\nThis message can be cited.",
  "circularId": 23322,
  "createdOn": 1539244787000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 181008B: Global MASTER Net optical inspection",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 181008B"
}