TITLE: GCN CIRCULAR NUMBER: 38473 SUBJECT: Fermi GRB 241207B: Global MASTER-Net observations report DATE: 24/12/09 04:30:45 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs <lipunov@xray.sai.msu.ru> V.Lipunov, E.Gorbovskoy, N.Tiurina, P.Balanutsa, , D.Vlasenko, I.Panchenko, A.Kuznetsov, G.Antipov, A.Sankovich, A.Sosnovskij, Yu.Tselik, M.Gulyaev, Ya.Kechin, V.Senik, A.Chasovnikov, K.Labsina, I. Gorbunov (Lomonosov MSU), O.Gress, N.Budnev (ISU), C.Francile, F. Podesta, R.Podesta, E. Gonzalez (Observatorio Astronomico Felix Aguilar (OAFA), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), A. Gabovich, V.Yurkov (Blagoveschensk Educational StateUniversity) D.Buckley (SAAO), R.Rebolo (The Instituto de Astrofisica de Canarias), L.Carrasco, J.R.Valdes, V.Chavushyan, V.M.Patino Alvarez, J.Martinez, A.R.Corella, L.H.Rodriguez (INAOE, Guillermo Haro Astrophysics Observatory) MASTER-Tavrida robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, SAI Crimea astronomical station) started inspect of the Fermi GRB 241207B ( Fermi GBM team, GCN 38461) errorbox 1 days 24239 sec after notice time and 1 days 24273 sec after trigger time at 2024-12-09 03:35:34 UT, with upper limit up to 17.2 mag. Observations started at twilight. The observations began at zenith distance = 78 deg. The sun altitude is -15.5 deg. The galactic latitude b = 31 deg., longitude l = 353 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2699915 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 110763 | 2024-12-09 03:35:34 | MASTER-Tavrida | (15h 02m 40.58s , -11d 54m 25.0s) | C | 180 | 16.6 | 110959 | 2024-12-09 03:38:50 | MASTER-Tavrida | (15h 10m 53.06s , -11d 52m 58.7s) | C | 180 | 17.2 | 111160 | 2024-12-09 03:42:12 | MASTER-Tavrida | (15h 02m 36.75s , -11d 53m 42.6s) | C | 180 | 15.2 | 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/38473. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...