TITLE: GCN CIRCULAR NUMBER: 35379 SUBJECT: Swift GRB231216.77: Global MASTER-Net observations report DATE: 23/12/16 18:57:11 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-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 GRB231216.77 (trigger No 1202749,02h 39m 02.16s , +33d 35m 45.6s, R=0.05) errorbox 47 sec after notice time and 382 sec after trigger time at 2023-12-16 18:42:04 UT, with upper limit up to 17.6 mag. Observations started at twilight. The observations began at zenith distance = 66 deg. The sun altitude is -11.7 deg. The galactic latitude b = -24 deg., longitude l = 148 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2334628 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 413 | MASTER-SAAO | P\\ | 60 | 15.6 | 473 | MASTER-SAAO | P\\ | 180 | 16.2 | Coadd 413 | MASTER-SAAO | P/ | 60 | 16.8 | 492 | MASTER-SAAO | P\\ | 60 | 15.8 | 492 | MASTER-SAAO | P/ | 60 | 16.9 | 572 | MASTER-SAAO | P\\ | 60 | 16.1 | 572 | MASTER-SAAO | P/ | 60 | 17.1 | 661 | MASTER-SAAO | P\\ | 60 | 16.2 | 661 | MASTER-SAAO | P/ | 60 | 17.2 | 741 | MASTER-SAAO | P\\ | 60 | 16.4 | 741 | MASTER-SAAO | P/ | 60 | 17.4 | 832 | MASTER-SAAO | P\\ | 60 | 16.5 | 832 | MASTER-SAAO | P/ | 60 | 17.5 | 911 | MASTER-SAAO | P\\ | 60 | 16.5 | 911 | MASTER-SAAO | P/ | 60 | 17.5 | 1000 | MASTER-SAAO | P\\ | 60 | 16.4 | 1000 | MASTER-SAAO | P/ | 60 | 17.6 | 1080 | MASTER-SAAO | P\\ | 60 | 16.6 | The observation and reduction will continue. The message may be cited. View this GCN Circular online at https://gcn.nasa.gov/circulars/35379. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...