{ "submittedHow": "email", "circularId": 45638, "createdOn": 1789751408135, "body": "M. Segura, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA)\n\nO.Gress, N.Budnev(ISU)\n\nV.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 (Lomonosov MSU)\n\nD.Buckley (SAAO),\n\nA. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity)\nA.Sosnovskij (Lomonosov MSU)\n\nA. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory)\n\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\nR.Rebolo (The Instituto de Astrofisica de Canarias)\n\n\nMASTER-OAFA robotic telescope [1] located in Argentina (OAFA observatory of San Juan National University) was pointed to the EP Alert 260918.24 (trigger No 1789710740,23h 38m 57.74s , -08d 55m 04.4s, R=0.5) errorbox 10544 sec after trigger time at 2026-09-18 08:48:04 UT, with upper limit up to 20.0 mag. The observations began at zenith distance = 64 deg. The sun altitude is -22.6 deg. \n\nMASTER-Tunka robotic telescope located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the EP Alert 260918.24 errorbox 10269 sec after notice time and 39335 sec after trigger time at 2026-09-18 16:47:55 UT, with upper limit up to 18.3 mag. The observations began at zenith distance = 61 deg. The sun altitude is -36.3 deg. \n\nThe galactic latitude b = -65 deg., longitude l = 78 deg.\n\n\nReal time updated cover map and OT discovered available here: \nhttps://master.sai.msu.ru/site/master2/observ.php?id=3506559\n\nWe obtain a following upper limits. \n\nTmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment\n_________|_____________________|_____________________|____________________________________|_____|_______|_______|________\n\n 10575 | 2026-09-18 08:48:04 | MASTER-OAFA | (23h 35m 58.37s , -10d 16m 45.6s) | C | 60 | 19.7 | \n 10635 | 2026-09-18 08:48:04 | MASTER-OAFA | (23h 35m 58.37s , -10d 16m 45.6s) | C | 180 | 20.0 | Coadd \n 10650 | 2026-09-18 08:49:19 | MASTER-OAFA | (23h 35m 57.65s , -10d 15m 45.5s) | C | 60 | 19.6 | \n 10728 | 2026-09-18 08:50:37 | MASTER-OAFA | (23h 36m 03.43s , -10d 16m 46.0s) | C | 60 | 19.6 | \n 10804 | 2026-09-18 08:51:53 | MASTER-OAFA | (23h 35m 57.65s , -10d 17m 46.4s) | C | 60 | 19.6 | \n 10864 | 2026-09-18 08:51:53 | MASTER-OAFA | (23h 35m 57.65s , -10d 17m 46.5s) | C | 180 | 20.0 | Coadd \n 10881 | 2026-09-18 08:53:11 | MASTER-OAFA | (23h 44m 11.71s , -10d 17m 35.0s) | C | 60 | 19.6 | \n 10941 | 2026-09-18 08:53:11 | MASTER-OAFA | (23h 44m 11.71s , -10d 17m 35.1s) | C | 180 | 19.7 | Coadd \n 10957 | 2026-09-18 08:54:27 | MASTER-OAFA | (23h 36m 01.34s , -10d 16m 11.6s) | C | 60 | 19.6 | \n 11034 | 2026-09-18 08:55:44 | MASTER-OAFA | (23h 36m 01.38s , -10d 17m 43.3s) | C | 60 | 19.6 | \n 11112 | 2026-09-18 08:57:02 | MASTER-OAFA | (23h 44m 12.84s , -10d 16m 11.6s) | C | 60 | 19.6 | \n 11188 | 2026-09-18 08:58:17 | MASTER-OAFA | (23h 35m 58.15s , -10d 16m 48.8s) | C | 60 | 19.6 | \n 11248 | 2026-09-18 08:58:17 | MASTER-OAFA | (23h 35m 58.15s , -10d 16m 49.0s) | C | 180 | 18.4 | Coadd \n 13855 | 2026-09-18 09:42:44 | MASTER-OAFA | (23h 44m 10.37s , -10d 16m 40.2s) | C | 60 | 17.9 | \n 13930 | 2026-09-18 09:43:59 | MASTER-OAFA | (23h 44m 10.40s , -10d 18m 11.6s) | C | 60 | 17.7 | \n 13990 | 2026-09-18 09:43:59 | MASTER-OAFA | (23h 44m 10.39s , -10d 18m 11.6s) | C | 180 | 18.3 | Coadd \n 14007 | 2026-09-18 09:45:17 | MASTER-OAFA | (23h 44m 13.33s , -10d 16m 30.1s) | C | 60 | 17.6 | \n 14084 | 2026-09-18 09:46:33 | MASTER-OAFA | (23h 44m 07.61s , -10d 17m 14.1s) | C | 60 | 17.5 | \n 14160 | 2026-09-18 09:47:49 | MASTER-OAFA | (23h 35m 59.75s , -10d 16m 15.9s) | C | 60 | 16.9 | \n 14237 | 2026-09-18 09:49:06 | MASTER-OAFA | (23h 36m 05.16s , -10d 17m 16.8s) | C | 60 | 16.6 | \n 14312 | 2026-09-18 09:50:21 | MASTER-OAFA | (23h 35m 59.06s , -10d 18m 17.0s) | C | 60 | 16.5 | \n 14387 | 2026-09-18 09:51:37 | MASTER-OAFA | (23h 36m 05.58s , -10d 18m 13.3s) | C | 60 | 16.2 | \n 39365 | 2026-09-18 16:47:55 | MASTER-Tunka | (23h 37m 25.78s , -09d 23m 20.0s) | C | 60 | 16.3 | \n 39365 | 2026-09-18 16:47:55 | MASTER-Tunka | (23h 37m 12.23s , -09d 19m 16.8s) | C | 60 | 16.4 | \n 39437 | 2026-09-18 16:49:06 | MASTER-Tunka | (23h 37m 31.13s , -09d 23m 12.7s) | C | 60 | 18.3 | \n 39437 | 2026-09-18 16:49:06 | MASTER-Tunka | (23h 37m 17.57s , -09d 19m 09.4s) | C | 60 | 18.0 | \n 39509 | 2026-09-18 16:50:18 | MASTER-Tunka | (23h 37m 28.53s , -09d 21m 38.0s) | C | 60 | 15.8 | \n 39509 | 2026-09-18 16:50:18 | MASTER-Tunka | (23h 37m 14.98s , -09d 17m 34.6s) | C | 60 | 15.2 | \nFilter C is a clear (unfiltred) band. \n\n\nThe observation and reduction will continue. \nThe message may be cited.\n\n[1] - V.M. Lipunov, V.G. Kornilov, E.S. Gorbovskoy, N.A. Tiurina & A.S.Kuznetsov, 2023, Astronomical Robotic Networks and Operative Multichanel Astrophysics, Lomonosov MSU PRESS, 591pp.\nhttp : // www.pereplet.ru/lipunov/625.html\n", "subject": "EP Alert 260918.24: Global MASTER-Net observations report", "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs " }