TITLE: GCN CIRCULAR NUMBER: 37183 SUBJECT: Fermi GRB 240814C: Global MASTER-Net observations report DATE: 24/08/14 19:15:48 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs 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-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 240814C ( Fermi GBM team, GCN 37181) errorbox 155 sec after notice time and 189 sec after trigger time at 2024-08-14 18:53:27 UT, with upper limit up to 16.9 mag. The observations began at zenith distance = 84 deg. The sun altitude is -19.7 deg. The galactic latitude b = 42 deg., longitude l = 173 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2563859 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 209 | 2024-08-14 18:53:27 | MASTER-Tavrida | (09h 04m 29.33s , +47d 18m 05.0s) | C | 40 | 16.2 | 264 | 2024-08-14 18:53:27 | MASTER-Tavrida | (09h 04m 29.34s , +47d 18m 04.9s) | C | 150 | 16.9 | Coadd 454 | 2024-08-14 18:53:27 | MASTER-Tavrida | (09h 04m 29.34s , +47d 18m 05.1s) | C | 530 | 16.9 | Coadd 209 | 2024-08-14 18:53:27 | MASTER-Tavrida | (09h 04m 45.32s , +47d 14m 21.6s) | C | 40 | 16.1 | 269 | 2024-08-14 18:53:27 | MASTER-Tavrida | (09h 04m 45.39s , +47d 14m 21.3s) | C | 160 | 16.8 | Coadd 258 | 2024-08-14 18:54:10 | MASTER-Tavrida | (09h 04m 29.98s , +47d 18m 01.0s) | C | 50 | 16.2 | 258 | 2024-08-14 18:54:11 | MASTER-Tavrida | (09h 04m 45.66s , +47d 14m 19.4s) | C | 50 | 16.1 | 317 | 2024-08-14 18:55:04 | MASTER-Tavrida | (09h 04m 30.60s , +47d 17m 58.1s) | C | 60 | 16.4 | 317 | 2024-08-14 18:55:05 | MASTER-Tavrida | (09h 04m 46.14s , +47d 14m 16.7s) | C | 60 | 15.8 | 386 | 2024-08-14 18:56:09 | MASTER-Tavrida | (09h 04m 31.12s , +47d 17m 54.6s) | C | 70 | 16.4 | 541 | 2024-08-14 18:56:09 | MASTER-Tavrida | (09h 04m 31.12s , +47d 17m 54.8s) | C | 380 | 16.8 | Coadd 386 | 2024-08-14 18:56:09 | MASTER-Tavrida | (09h 04m 46.61s , +47d 14m 12.5s) | C | 70 | 16.1 | 643 | 2024-08-14 19:00:00 | MASTER-Tavrida | (09h 04m 46.20s , +47d 15m 49.6s) | C | 120 | 16.2 | 643 | 2024-08-14 19:00:01 | MASTER-Tavrida | (09h 05m 01.23s , +47d 12m 08.0s) | C | 120 | 16.1 | 777 | 2024-08-14 19:02:04 | MASTER-Tavrida | (09h 04m 47.37s , +47d 15m 47.6s) | C | 140 | 16.4 | 777 | 2024-08-14 19:02:04 | MASTER-Tavrida | (09h 05m 02.05s , +47d 12m 07.4s) | C | 140 | 16.0 | 936 | 2024-08-14 19:04:29 | MASTER-Tavrida | (09h 04m 48.55s , +47d 15m 47.4s) | C | 170 | 16.3 | 936 | 2024-08-14 19:04:29 | MASTER-Tavrida | (09h 05m 02.94s , +47d 12m 07.5s) | C | 170 | 16.1 | 1115 | 2024-08-14 19:07:23 | MASTER-Tavrida | (09h 04m 49.70s , +47d 15m 48.2s) | C | 180 | 16.4 | 1115 | 2024-08-14 19:07:23 | MASTER-Tavrida | (09h 05m 03.79s , +47d 12m 09.7s) | C | 180 | 15.7 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.