TITLE:   GCN CIRCULAR
NUMBER:  28692
SUBJECT: GRB 201017A: SAO RAS optical observations
DATE:    20/10/19 17:43:25 GMT
FROM:    Moskvitin Alexander at SAO RAS  <mosk@sao.ru>

A. S. Moskvitin,  V. N. Aitov (SAO RAS)
on behalf of GRB follow-up team report.

We observed the field of GRB 201017A (Fermi GBM team, GCN #28665;
D'Ai et al., GCN #28666; Poolakkil et al., GCN #28675)
with the 1-m telescope of SAO RAS, Zeiss-1000 + Multi-Mode
Photometer-Polarimeter. We obtained 11 x 300 sec. images in Rc band
on October 17, 22:01:08--23:24:20 UT, t_mid - T0 = 0.5390 days.

We did not detect possible OT reported by Belkin et al. (GCN #28679)
or any sources within the XRT error circle (Goad et al., GCN #28671)
down to a limiting magnitude of 23.0.