A distortion solution for the Bok telescope with four CCD chips
A distortion solution for the Bok telescope with four CCD chips
复制标题
四CCD芯片Bok望远镜畸变解决方案
DOI:
10.1093/mnras/stz459
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发表时间:
2019-02
影响因子:
4.8
通讯作者:
Peng H W
中科院分区:
文献类型:
--
作者:
Wang N;Peng Q Y;Zhou X;Peng X Y;Peng H W
The Beijing-Arizona Sky Survey (BASS) is an imaging survey and uses the 2.3 m Bok telescope at Kitt Peak. In order to tap the astrometric potential of the Bok telescope and improve the astrometry of BASS, a distortion solution for the Bok telescope is made. In the past, we used a single lookup table to correct all the positional errors. However, this method can not be applied to the reduction of the observation for the Bok telescope where four CCD chips are equipped with. Then quite different from our previous method, two third-order polynomials were used to fit the lookup table. By using the polynomial Geometric Distortion (called GD hereafter) correction the astrometry of BASS is improved greatly. Moreover, an additional lookup table correction is found to be more effective to obtain a final GD. The results show that the positional measurement precision of the appropriate bright stars is estimated at about 20 mas and even better in each direction. Besides, the relative positions of the chips are measured. The change of the inter-chip gaps in horizontal or vertical is no more than 5 pixel between 2016 and 2017 and the change of the roll angle is no more than 0.1 degree.
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DOI:
10.1093/mnras/stv469
发表时间:
2015
期刊:
MNRAS
影响因子:
--
作者:
Peng Q. Y. (彭青玉);Wang N.;Vienne A.;Zhang Q. F.;Li Z.;Meng X. H.
通讯作者:
Meng X. H.
影响因子:
4.8
作者:
N. Wang;Q. Y. Peng;X. L. Zhang;Q. F. Zhang;Z. Li;X. H. Meng
通讯作者:
X. H. Meng
影响因子:
4.8
作者:
N. Wang;Q. Peng;H. W. Peng;H. Xie;S. Ma;Q. Zhang
通讯作者:
N. Wang;Q. Peng;H. W. Peng;H. Xie;S. Ma;Q. Zhang
影响因子:
3.5
作者:
Jay Anderson;I. King
通讯作者:
Jay Anderson;I. King
DOI:
10.1088/0004-6256/144/6/170
发表时间:
2012-12
期刊:
The Astronomical Journal
影响因子:
--
作者:
Q. Peng;A. Vienne;Qingfeng Zhang;J. Desmars;C. Yang;H. He
通讯作者:
Q. Peng;A. Vienne;Qingfeng Zhang;J. Desmars;C. Yang;H. He