TITLE: GCN CIRCULAR NUMBER: 35346 SUBJECT: Swift GRB231215.41: Global MASTER-Net observations report DATE: 23/12/15 11:41:18 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> V. Lipunov, V.Kornilov, E. Gorbovskoy, K. Zhirkov, N.Tyurina, P.Balanutsa, A.Kuznetsov, V.Senik, D. Vlasenko, G.Antipov, D.Zimnukhov, E.Minkina, A.Chasovnikov, V.Topolev, D.Kuvshinov, D. Cheryasov, Ya.Kechin, Yu.Tselik, A. Sosnovskij (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gress, N.M. Budnev, O.Ershova (Irkutsk State University, API), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich (Blagoveschensk Educational State University) MASTER-Tunka robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Applied Physics Institute, Irkutsk State University) was pointed to the Swift GRB231215.41 (trigger No 1202522,00h 39m 00.00s , +57d 38m 31.2s, R=0.05) errorbox 2511 sec after notice time and 2545 sec after trigger time at 2023-12-15 10:29:50 UT, with upper limit up to 19.6 mag. Observations started at twilight. The observations began at zenith distance = 16 deg. The sun altitude is -13.1 deg. The galactic latitude b = -5 deg., longitude l = 122 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2333312 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 2590 | MASTER-Tunka | C | 90 | 19.2 | 2625 | MASTER-Tunka | C | 160 | 19.3 | Coadd 2769 | MASTER-Tunka | C | 10 | 19.0 | 2779 | MASTER-Tunka | C | 30 | 19.4 | Coadd 2874 | MASTER-Tunka | C | 220 | 19.5 | Coadd 2783 | MASTER-Tunka | C | 10 | 19.1 | 2797 | MASTER-Tunka | C | 10 | 19.1 | 2816 | MASTER-Tunka | C | 20 | 19.4 | 2841 | MASTER-Tunka | C | 70 | 19.6 | Coadd 2840 | MASTER-Tunka | C | 20 | 19.3 | 2869 | MASTER-Tunka | C | 30 | 19.4 | 2903 | MASTER-Tunka | C | 30 | 19.4 | 2942 | MASTER-Tunka | C | 40 | 18.7 | 2991 | MASTER-Tunka | C | 50 | 18.9 | 3051 | MASTER-Tunka | C | 170 | 19.5 | Coadd 3050 | MASTER-Tunka | C | 60 | 19.6 | 3114 | MASTER-Tunka | C | 60 | 19.6 | 3178 | MASTER-Tunka | C | 60 | 19.6 | 3242 | MASTER-Tunka | C | 60 | 19.6 | 3306 | MASTER-Tunka | C | 60 | 19.5 | 3369 | MASTER-Tunka | C | 60 | 19.5 | 3433 | MASTER-Tunka | C | 60 | 19.6 | 3497 | MASTER-Tunka | C | 60 | 19.6 | 3561 | MASTER-Tunka | C | 60 | 19.6 | 3625 | MASTER-Tunka | C | 60 | 19.5 | 3688 | MASTER-Tunka | C | 60 | 19.5 | 3752 | MASTER-Tunka | C | 60 | 19.5 | 3816 | MASTER-Tunka | C | 60 | 19.5 | 3880 | MASTER-Tunka | C | 60 | 19.5 | 3944 | MASTER-Tunka | C | 60 | 19.6 | 4008 | MASTER-Tunka | C | 60 | 19.6 | 4071 | MASTER-Tunka | C | 60 | 19.6 | 4135 | MASTER-Tunka | C | 60 | 19.6 | 4200 | MASTER-Tunka | C | 60 | 19.6 | 4264 | MASTER-Tunka | C | 60 | 19.6 | 4328 | MASTER-Tunka | C | 60 | 19.1 | 4392 | MASTER-Tunka | C | 60 | 19.1 | 4455 | MASTER-Tunka | C | 60 | 19.1 | 4520 | MASTER-Tunka | C | 60 | 19.1 | 4583 | MASTER-Tunka | C | 60 | 19.1 | 4647 | MASTER-Tunka | C | 60 | 19.1 | 4711 | MASTER-Tunka | C | 60 | 19.1 | 4775 | MASTER-Tunka | C | 60 | 19.1 | 4839 | MASTER-Tunka | C | 60 | 19.1 | 4902 | MASTER-Tunka | C | 60 | 19.1 | 4966 | MASTER-Tunka | C | 60 | 19.1 | 5030 | MASTER-Tunka | C | 60 | 19.1 | 5094 | MASTER-Tunka | C | 60 | 19.1 | 5157 | MASTER-Tunka | C | 60 | 19.1 | 5221 | MASTER-Tunka | C | 60 | 19.1 | 5285 | MASTER-Tunka | C | 60 | 19.1 | 5349 | MASTER-Tunka | C | 60 | 19.1 | 5412 | MASTER-Tunka | C | 60 | 19.1 | 5476 | MASTER-Tunka | C | 60 | 19.1 | 5541 | MASTER-Tunka | C | 60 | 19.1 | 5605 | MASTER-Tunka | C | 60 | 19.1 | 5669 | MASTER-Tunka | C | 60 | 19.1 | 5732 | MASTER-Tunka | C | 60 | 19.1 | 5796 | MASTER-Tunka | C | 60 | 19.1 | 5860 | MASTER-Tunka | C | 60 | 19.1 | 5924 | MASTER-Tunka | C | 60 | 19.1 | 5987 | MASTER-Tunka | C | 60 | 19.1 | 6051 | MASTER-Tunka | C | 60 | 19.1 | 6115 | MASTER-Tunka | C | 60 | 19.1 | 6179 | MASTER-Tunka | C | 60 | 19.1 | 6243 | MASTER-Tunka | C | 60 | 19.1 | 6307 | MASTER-Tunka | C | 60 | 19.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/35346. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...