TITLE: GCN CIRCULAR NUMBER: 46199 SUBJECT: SVOM GRB261108.89: Global MASTER-Net observations report DATE: 26/11/08 22:14:29 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs D.Buckley (SAAO), V.Lipunov, E.Gorbovskoy, A.Kuznetsov, K.Zhirkov, I.Panchenko, N.Tiurina, P.Balanutsa, V.Topolev, D.Vlasenko, G.Antipov, A.Sankovich, Yu.Tselik, Ya..Kechin, V.Senik, A.Chasovnikov, K.Labsina (Lomonosov MSU) A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity) A.Sosnovskij (Lomonosov MSU) A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory) L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) R.Rebolo (The Instituto de Astrofisica de Canarias) O.Gress, N.Budnev(ISU) M. Segura, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA) MASTER-SAAO robotic telescope [1] located in South Africa (South African Astronomical Observatory) was pointed to the SVOM GRB261108.89 (trigger No 1794172715,00h 46m 48.34s , -64d 20m 03.8s, R=0.1096) errorbox 39 sec after notice time and 772 sec after trigger time at 2026-11-08 21:31:26 UT, with upper limit up to 18.2 mag. The observations began at zenith distance = 35 deg. The sun altitude is -39.6 deg. The galactic latitude b = -53 deg., longitude l = 303 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=3532435 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 802 | 2026-11-08 21:31:26 | MASTER-SAAO | (00h 40m 20.20s , -64d 23m 22.6s) | P/ | 60 | 17.6 | 862 | 2026-11-08 21:31:26 | MASTER-SAAO | (00h 40m 20.19s , -64d 23m 22.3s) | P/ | 180 | 18.3 | Coadd 802 | 2026-11-08 21:31:26 | MASTER-SAAO | (00h 44m 46.17s , -64d 39m 05.1s) | P\ | 60 | 17.6 | 862 | 2026-11-08 21:31:26 | MASTER-SAAO | (00h 44m 46.20s , -64d 39m 05.0s) | P\ | 180 | 18.0 | Coadd 881 | 2026-11-08 21:32:45 | MASTER-SAAO | (00h 40m 19.67s , -64d 23m 19.7s) | P/ | 60 | 17.6 | 990 | 2026-11-08 21:34:34 | MASTER-SAAO | (00h 40m 19.21s , -64d 23m 16.4s) | P/ | 60 | 17.6 | 990 | 2026-11-08 21:34:34 | MASTER-SAAO | (00h 44m 45.25s , -64d 38m 58.5s) | P\ | 60 | 17.6 | 1804 | 2026-11-08 21:48:08 | MASTER-SAAO | (00h 40m 17.53s , -64d 22m 54.9s) | P/ | 60 | 16.9 | 1804 | 2026-11-08 21:48:08 | MASTER-SAAO | (00h 44m 43.21s , -64d 38m 36.6s) | P\ | 60 | 16.9 | The observation and reduction will continue. The message may be cited. [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. http : // www.pereplet.ru/lipunov/625.html