{
  "createdOn": 1702244336873,
  "submittedHow": "email-legacy",
  "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-SAAO robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in South Africa (South African Astronomical Observatory) was pointed to the Swift GRB231210.90 (trigger No 1201696,06h 23m 05.28s , -48d 21m 32.4s, R=0.05) errorbox  89 sec after notice time and 124 sec after trigger time at 2023-12-10 21:31:08 UT, with upper limit up to  18.9 mag. The observations began at zenith distance = 30 deg. The sun  altitude  is -33.2 deg. \n\nThe galactic latitude b = -24 deg., longitude l = 257 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=2329146\n\nWe obtain a following upper limits.  \n\nTmid-T0  |          Site       |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____|_______|______|________\n\n     129 |         MASTER-SAAO | P\\\\ |    10 | 17.4 |        \n     129 |         MASTER-SAAO |  P/ |    10 | 17.3 |        \n     213 |         MASTER-SAAO | P\\\\ |    40 | 18.5 |        \n     213 |         MASTER-SAAO |  P/ |    40 | 18.4 |        \n     283 |         MASTER-SAAO | P\\\\ |    50 | 18.9 |        \n     283 |         MASTER-SAAO |  P/ |    50 | 18.9 |        \n\n\nThe observation and reduction will continue. \nThe message may be cited.\n\n",
  "circularId": 35312,
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "bibcode": "2023GCN.35312....1L",
  "subject": "Swift GRB231210.90: Global MASTER-Net observations report",
  "eventId": "GRB 231210.90"
}