Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 28699

GRB 201014A: SAO RAS optical observations
2020-10-20T13:32:15Z (4 years ago)
Moskvitin Alexander at SAO RAS <>
A. S. Moskvitin,  V. N. Aitov (SAO RAS)
on behalf of GRB follow-up team report.

We observed the field of GRB 201014A, Swift trigger 1000255
(Ambrosi et al., GCN 28623) with the 1-m telescope of SAO RAS,
Zeiss-1000 + Multi-Mode Photometer-Polarimeter.

We obtained 6 x 300 sec. images in Rc band on October 15,
21:11:44--21:43:50, t_mid - T0 = 0.9439 days since trigger.

Inside the enhanced XRT circle (D���Elia et al., GCN #28626;
Perri et al., GCN #28638) we marginally detected the GRB OT
(Pozanenko et al., GCN #28628; de Ugarte Postigo et al., GCN #28650;
Dichiara et al., GCN #28654; Zhu et al., GCN #28655)
with the brightness of R = 24.0 +/- 0.3 (calibrated against the nearby
SDSS stars, magnitudes converted with the Lupton 2005 equations).

We also obtained 12 x 300 sec. images in Rc band on October 16,
20:55:16--21:59:23, t_mid - T0 = 1.9435 days since trigger.
We did not detect OT down to the limiting magnitude of R_lim = 24.0.
Looking for U.S. government information and services? Visit