TITLE: GCN CIRCULAR NUMBER: 27146 SUBJECT: Fermi trigger No 603849435: Global MASTER-Net observations report DATE: 20/02/20 00:15:23 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V. Lipunov, E. Gorbovskoy, V.Kornilov, N.Tyurina, P.Balanutsa, A.Kuznetsov, F.Balakin, V.Vladimirov, D. Vlasenko, I.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva, D.Kuvshinov, D. Cheryasov (Lomonosov Moscow State University, SAI, Physics Department), R. Podesta, C.Lopez, F. Podesta, C.Francile (Observatorio Astronomico Felix Aguilar OAFA), H.Levato (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE), R. Rebolo, M. Serra (The Instituto de Astrofisica de Canarias), D. Buckley (South African Astronomical Observatory), O.A. Gres, N.M. Budnev, O.Ershova (Irkutsk State University, API), A. Tlatov, D. Dormidontov (Kislovodsk Solar Station of the Pulkovo Observatory), V. Yurkov, A. Gabovich, Yu. Sergienko (Blagoveschensk Educational State University) MASTER-Kislovodsk robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Russia (Lomonosov MSU, Kislovodsk Solar Station of Pulkovo observatory) started inspect of the Fermi GRB200220.00 (trigger No 603849435,17h 37m 55.20s , +08d 23m 24.0s, R=1) errorbox 95 sec after notice time and 137 sec after trigger time at 2020-02-19 23:59:28 UT, with upper limit up to 17.8 mag. The observations began at zenith distance = 72 deg. The sun altitude is -43.9 deg. The galactic latitude b = 20 deg., longitude l = 32 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1293061 We obtain a following upper limits. Tmid-T0 | Date Time | Site | Coord (J2000) |Filt.| Expt. | Limit| Comment _________|_____________________|_____________________|____________________________________|_____|_______|_______|________ 153 | 2020-02-19 23:59:28 | MASTER-Kislovodsk | (17h 39m 31.03s , +09d 29m 17.1s) | P- | 30 | 17.0 | 188 | 2020-02-19 23:59:28 | MASTER-Kislovodsk | (17h 39m 31.03s , +09d 29m 17.1s) | P- | 100 | 17.6 | Coadd 153 | 2020-02-19 23:59:28 | MASTER-Kislovodsk | (17h 39m 22.69s , +09d 01m 41.2s) | P| | 30 | 16.9 | 188 | 2020-02-19 23:59:28 | MASTER-Kislovodsk | (17h 39m 22.69s , +09d 01m 41.2s) | P| | 100 | 17.7 | Coadd 203 | 2020-02-20 00:00:18 | MASTER-Kislovodsk | (17h 39m 35.01s , +09d 29m 58.7s) | P- | 30 | 17.0 | 203 | 2020-02-20 00:00:18 | MASTER-Kislovodsk | (17h 39m 26.73s , +09d 02m 22.6s) | P| | 30 | 17.0 | 259 | 2020-02-20 00:01:09 | MASTER-Kislovodsk | (17h 39m 28.17s , +09d 29m 16.3s) | P- | 40 | 17.2 | 259 | 2020-02-20 00:01:09 | MASTER-Kislovodsk | (17h 39m 19.96s , +09d 01m 39.9s) | P| | 40 | 17.1 | 329 | 2020-02-20 00:02:09 | MASTER-Kislovodsk | (17h 39m 28.89s , +09d 30m 15.3s) | P- | 60 | 17.5 | 329 | 2020-02-20 00:02:09 | MASTER-Kislovodsk | (17h 39m 20.77s , +09d 02m 38.9s) | P| | 60 | 17.5 | 415 | 2020-02-20 00:03:30 | MASTER-Kislovodsk | (17h 39m 33.96s , +09d 29m 16.6s) | P- | 70 | 17.6 | 415 | 2020-02-20 00:03:30 | MASTER-Kislovodsk | (17h 39m 25.89s , +09d 01m 40.1s) | P| | 70 | 17.5 | 638 | 2020-02-20 00:06:48 | MASTER-Kislovodsk | (17h 37m 16.50s , +08d 31m 11.3s) | P- | 120 | 17.8 | 638 | 2020-02-20 00:06:48 | MASTER-Kislovodsk | (17h 37m 08.44s , +08d 03m 34.1s) | P| | 120 | 17.8 | The observation and reduction will continue. The message may be cited.