Preliminary results of solving the problem of geometric distortion for the 2.4 m telescope at Yunnan Observatory
Preliminary results of solving the problem of geometric distortion for the 2.4 m telescope at Yunnan Observatory
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云南天文台2.4 m望远镜几何畸变问题解决的初步成果
DOI:
10.1088/1674-4527/12/10/007
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发表时间:
2012-10
影响因子:
1.8
通讯作者:
朱紫
中科院分区:
文献类型:
--
作者:
张庆丰;彭青玉;朱紫
We observed the open clusters NGC 1664 (43 exposures) and M35 (42 exposures) by the Yunnan Faint Object Spectrograph and Camera in the 2.4 m telescope at Yunnan Astronomical Observatory on 2011 January 3, and processed them by a method recently proposed by us. The result shows that there is a geometric distortion effect in the field of view and the maximum distortion is ∼ 0.25″ (i.e. 1 pixel). After correcting the geometric distortion, the precision of stellar positional measurement is significantly improved. The best precision in each direction is 6 mas for well-exposed stars.
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DOI:
10.1111/j.1365-2966.2011.19389.x
发表时间:
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影响因子:
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