TITLE: GCN CIRCULAR NUMBER: 28811 SUBJECT: Swift GRB 201029A: Global MASTER-Net observations report DATE: 20/10/30 20:21:58 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), 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-IAC robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Spain (IAC Teide Observatory) was pointed to the Swift GRB 201029A ( S. Dichiara et al., GCN 28803) errorbox 103 sec after trigger time at 2020-10-29 20:23:35 UT, with upper limit up to 17.3 mag. The observations began at zenith distance = 77 deg. The sun altitude is -27.6 deg. The galactic latitude b = 56 deg., longitude l = 73 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1471870 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 113 | MASTER-IAC | C | 20 | 15.9 | 148 | MASTER-IAC | C | 90 | 16.6 | Coadd 338 | MASTER-IAC | C | 470 | 17.3 | Coadd 146 | MASTER-IAC | C | 30 | 16.0 | 197 | MASTER-IAC | C | 40 | 16.0 | 253 | MASTER-IAC | C | 50 | 16.3 | 343 | MASTER-IAC | C | 230 | 17.0 | Coadd 322 | MASTER-IAC | C | 60 | 16.4 | 672 | MASTER-IAC | C | 120 | 16.5 | 817 | MASTER-IAC | C | 150 | 16.6 | 997 | MASTER-IAC | C | 510 | 16.6 | Coadd 993 | MASTER-IAC | C | 180 | 16.4 | 1193 | MASTER-IAC | C | 180 | 16.4 | 1392 | MASTER-IAC | C | 180 | 16.1 | 1572 | MASTER-IAC | C | 540 | 16.6 | Coadd 1591 | MASTER-IAC | C | 180 | 16.0 | 1791 | MASTER-IAC | C | 180 | 15.9 | 1991 | MASTER-IAC | C | 180 | 15.7 | 2601 | MASTER-IAC | C | 180 | 15.3 | 83049 | MASTER-IAC | C | 60 | 16.8 | 84836 | MASTER-IAC | C | 60 | 16.5 | 85552 | MASTER-IAC | C | 60 | 16.6 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.