TITLE: GCN CIRCULAR NUMBER: 38647 SUBJECT: Fermi trigger No 756447119: Global MASTER-Net observations report DATE: 24/12/22 05:45:43 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-OAFA robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Argentina (OAFA observatory of San Juan National University) started inspect of the Fermi GRB241221.17 (trigger No 756447119,01h 29m 43.92s , +17d 24m 00.0s, R=29.93) errorbox 80207 sec after notice time and 80238 sec after trigger time at 2024-12-22 02:29:12 UT, with upper limit up to 20.5 mag. The observations began at zenith distance = 41 deg. The sun altitude is -28.0 deg. The galactic latitude b = -44 deg., longitude l = 137 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2717443 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 80244 | 2024-12-22 02:29:12 | MASTER-OAFA | (02h 03m 18.28s , +00d 17m 47.0s) | C | 10 | 16.4 | 80259 | 2024-12-22 02:29:12 | MASTER-OAFA | (02h 03m 18.29s , +00d 17m 47.1s) | C | 40 | 16.5 | Coadd 80244 | 2024-12-22 02:29:13 | MASTER-OAFA | (02h 12m 22.70s , +00d 42m 25.9s) | C | 10 | 19.5 | 80269 | 2024-12-22 02:29:13 | MASTER-OAFA | (02h 12m 22.71s , +00d 42m 25.9s) | C | 60 | 20.2 | Coadd 80314 | 2024-12-22 02:29:13 | MASTER-OAFA | (02h 12m 22.51s , +00d 42m 25.7s) | C | 150 | 20.2 | Coadd 80278 | 2024-12-22 02:29:42 | MASTER-OAFA | (02h 03m 17.98s , +00d 17m 46.5s) | C | 20 | 16.5 | 80278 | 2024-12-22 02:29:42 | MASTER-OAFA | (02h 12m 22.50s , +00d 42m 25.0s) | C | 20 | 19.9 | 80313 | 2024-12-22 02:30:21 | MASTER-OAFA | (02h 03m 17.75s , +00d 17m 46.8s) | C | 10 | 16.3 | 80323 | 2024-12-22 02:30:22 | MASTER-OAFA | (02h 12m 22.23s , +00d 42m 25.0s) | C | 30 | 20.0 | 80354 | 2024-12-22 02:30:58 | MASTER-OAFA | (02h 03m 17.46s , +00d 17m 47.1s) | C | 20 | 16.3 | 80389 | 2024-12-22 02:30:58 | MASTER-OAFA | (02h 03m 17.48s , +00d 17m 47.2s) | C | 90 | 16.7 | Coadd 80364 | 2024-12-22 02:30:58 | MASTER-OAFA | (02h 12m 21.98s , +00d 42m 25.1s) | C | 40 | 20.1 | 80419 | 2024-12-22 02:30:58 | MASTER-OAFA | (02h 12m 21.98s , +00d 42m 25.1s) | C | 150 | 20.3 | Coadd 80405 | 2024-12-22 02:31:44 | MASTER-OAFA | (02h 03m 17.14s , +00d 17m 47.5s) | C | 30 | 16.5 | 80415 | 2024-12-22 02:31:44 | MASTER-OAFA | (02h 12m 21.69s , +00d 42m 25.4s) | C | 50 | 20.1 | 80466 | 2024-12-22 02:32:40 | MASTER-OAFA | (02h 03m 16.73s , +00d 17m 48.0s) | C | 40 | 16.3 | 80476 | 2024-12-22 02:32:40 | MASTER-OAFA | (02h 12m 21.32s , +00d 42m 25.7s) | C | 60 | 20.2 | 80537 | 2024-12-22 02:33:46 | MASTER-OAFA | (02h 03m 16.33s , +00d 17m 48.4s) | C | 50 | 16.5 | 80607 | 2024-12-22 02:33:46 | MASTER-OAFA | (02h 03m 16.32s , +00d 17m 48.5s) | C | 190 | 16.2 | Coadd 80548 | 2024-12-22 02:33:46 | MASTER-OAFA | (02h 12m 20.93s , +00d 42m 26.1s) | C | 70 | 20.2 | 80638 | 2024-12-22 02:33:46 | MASTER-OAFA | (02h 12m 20.93s , +00d 42m 26.1s) | C | 250 | 20.5 | Coadd 80618 | 2024-12-22 02:35:02 | MASTER-OAFA | (02h 03m 15.86s , +00d 17m 48.9s) | C | 60 | 16.5 | 80628 | 2024-12-22 02:35:02 | MASTER-OAFA | (02h 12m 20.47s , +00d 42m 26.6s) | C | 80 | 20.2 | 80715 | 2024-12-22 02:36:28 | MASTER-OAFA | (02h 03m 15.27s , +00d 17m 49.1s) | C | 80 | 16.2 | 80725 | 2024-12-22 02:36:29 | MASTER-OAFA | (02h 12m 19.91s , +00d 42m 26.5s) | C | 100 | 20.2 | 80831 | 2024-12-22 02:38:15 | MASTER-OAFA | (02h 03m 14.58s , +00d 17m 49.1s) | C | 100 | 16.0 | 80801 | 2024-12-22 02:38:15 | MASTER-OAFA | (02h 12m 19.46s , +00d 42m 26.4s) | C | 40 | 20.1 | 80841 | 2024-12-22 02:38:15 | MASTER-OAFA | (02h 12m 19.46s , +00d 42m 26.4s) | C | 120 | 20.3 | Coadd 80846 | 2024-12-22 02:39:00 | MASTER-OAFA | (02h 12m 19.17s , +00d 42m 26.5s) | C | 40 | 20.1 | 80891 | 2024-12-22 02:39:45 | MASTER-OAFA | (02h 12m 18.90s , +00d 42m 26.7s) | C | 40 | 20.1 | 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/38647. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...