TITLE: GCN CIRCULAR NUMBER: 17714 SUBJECT: GRB 150413A: SAO RAS observations DATE: 15/04/17 11:23:58 GMT FROM: Moskvitin Alexander at SAO RAS A. S. Moskvitin (SAO RAS) report on behalf of larger GRB follow-up collaboration: The field of GRB 150413A (Markwardt et al., GCNC 17688) was observed with the Zeiss-1000, 1-m telescope of SAO RAS. The observations were carried out on the April, 16, 20:00:28--21:31:31 UT (T-T0 = 3.285 days). 16 x 300 sec. frames in Rc filter were obtained. The OT (Ivanov et al.,GCNC 17689) is absent in the stacked image, therefore R > 23.0. The limiting value is based on the R2 magnitudes of nearby USNO-B1 stars. We acknowledge A. S. Pozanenko, O. I. Spiridovova and V. S. Bychkova for the help in observations.