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Optical Engineering

A star-and-sky chopping polarimeter: design and performance
Author(s): Surendra K. Jain; G. Srinivasulu
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Paper Abstract

We have developed a star-and-sky chopping polarimeter for accurate measurements of linear polarization of starlight in the standard astronomical photometric U, B, V, R, and I bands. The instrumental polarization, as determined by observing the standard unpolarized stars, is 0.04%. It is possible to use the instrument for the measurements of circular polarization as well. A UNICORN microcomputer controls the various operations of the instrument, acquires the data, and does the on-line data reduction. This paper describes the design and performance of the polarimeter.

Paper Details

Date Published: 1 September 1991
PDF: 7 pages
Opt. Eng. 30(9) doi: 10.1117/12.55935
Published in: Optical Engineering Volume 30, Issue 9
Show Author Affiliations
Surendra K. Jain, Indian Institute of Astrophysics (India)
G. Srinivasulu, Indian Institute of Astrophysics (India)

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