{
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru>",
  "circularId": 41736,
  "eventId": "EP250905b",
  "submittedHow": "email",
  "subject": "EP250905b: Global MASTER-Net observations report",
  "body": "V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, \nG.Antipov,  A.Sankovich, Yu.Tselik, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU),\nO.Gress, N.Budnev (ISU),\nC.Francile,  F. Podesta, R.Podesta, E. Gonzalez  (Observatorio Astronomico Felix Aguilar (OAFA),\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory),\nA.Sosnovskij (CrAO),\nA. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity),\nD.Buckley (SAAO),\nR.Rebolo (The Instituto de Astrofisica de Canarias),\nL.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez,\nA.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) \n\nMASTER-OAFA robotic telescope  (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L)  located in Argentina (OAFA observatory of San Juan National University) was pointed to the EP250905b ( EP Team et al., GCN 41735) errorbox  2238 sec after notice time and 46512 sec after trigger time at 2025-09-06 08:13:40 UT, with upper limit up to  19.5 mag. The observations began at zenith distance = 43 deg. The sun  altitude  is -33.0 deg. \n\nThe galactic latitude b = -28 deg., longitude l = 262 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=2985909\n\nWe obtain a following upper limits.  \n\nTmid-T0  |      Date Time      |          Site       |             Coord (J2000)          |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n   46542 | 2025-09-06 08:13:40 |         MASTER-OAFA | (06h 03m 11.78s , -54d 19m 04.9s) |   C |    60 | 19.5 |        \n   46618 | 2025-09-06 08:14:56 |         MASTER-OAFA | (06h 03m 19.42s , -54d 18m 45.3s) |   C |    60 | 19.5 |        \n   46697 | 2025-09-06 08:16:14 |         MASTER-OAFA | (06h 03m 15.86s , -54d 17m 05.6s) |   C |    60 | 19.5 |        \n   46771 | 2025-09-06 08:17:29 |         MASTER-OAFA | (06h 03m 15.93s , -54d 18m 30.1s) |   C |    60 | 19.5 |        \n   46837 | 2025-09-06 08:18:35 |         MASTER-OAFA | (06h 03m 15.94s , -54d 18m 27.8s) |   C |    60 | 19.5 |        \n   46903 | 2025-09-06 08:19:41 |         MASTER-OAFA | (06h 03m 15.97s , -54d 18m 25.3s) |   C |    60 | 19.5 |        \n   46981 | 2025-09-06 08:20:59 |         MASTER-OAFA | (06h 03m 19.09s , -54d 17m 19.1s) |   C |    60 | 19.5 |        \n   47047 | 2025-09-06 08:22:05 |         MASTER-OAFA | (06h 03m 19.11s , -54d 17m 16.9s) |   C |    60 | 19.5 |        \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.\n",
  "createdOn": 1757147255461,
  "bibcode": "2025GCN.41736....1L"
}