High-resolution fibre-fed spectrograph for the 6-m telescope. Polarimetric unit

被引：0
|
作者：
D. E. Kukushkin
D. A. Sazonenko
A. V. Bakholdin
M. V. Yushkin
V. D. Bychkov
机构：
[1] St. Petersburg National Research University of Information Technologies,Special Astrophysical Observatory
[2] Mechanics and Optics,undefined
[3] Russian Academy of Sciences,undefined
来源：
Astrophysical Bulletin | 2016年 / 71卷
关键词：
instruments; polarimeters—instruments; spectrographs;
D O I：
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学科分类号：
摘要：
We report the computation of the design of a polarimetric unit for the optical scheme of the fiberfed high-resolution spectrograph for the 6-m Russian telescope.We discuss a variant of its integration into the design of conversion optics at the input of the fiber path if the instrument and estimate the efficiency of the entire pre-fiber optical system. The luminous efficiency of the assembly is equal to 80 and 90% when operated in the polarimetry and normal spectroscopic modes, respectively.We estimate the lower limit for the distorting instrumental effects of the polarimetric unit.
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页码：249 / 256
页数：7
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