GCN Circular 28330
Subject
GRB 200829A: Continued Nanshan/NEXT optical observations
Date
2020-08-31T07:52:40Z (5 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
Z.P. Zhu, S.Y Fu, X. Liu, D. Xu (NAOC), X. Gao (Urumqi No.1 Senior High
School), X. Zhang, J.Z. Liu (XAO) report:
We continued to observe the optical afterglow (e.g., Siegel et al., GCN
28307; Pozanenko et al., GCN 28308; Kuin and Siegel, GCN 28311; Lipunov
et al., GCN 28315; Vinko et al., 28316; Hentunen et al., GCN 28318; Zhu
et al., GCN 28324; Moskvitin et al., GCNs 28322, 28328; Pankov et al.,
GCN 28329) of GRB 200829A (Siegel et al., GCN 28307; Ursi et al., GCN
28314; Ridnaia et al., GCN 28323; Lesage et al., GCN 28326), using the
NEXT-0.6m telescope located at Nanshan, Xinjiang, China. We obtained 28
frames in the Sloan r band, starting at 15:24:17 UT on 2020-08-30, i.e.,
about 1.058 d after the BAT trigger.
Preliminary photometric measurements are as follows:
Filter T_exp/s T_mid/d Mag Mag_err
SDSS-r 8x120 1.062 >20.6
SDSS-r 20x120 1.307 21.20 0.16
calibrated with nearby Pan-STARRS stars.