A star-and-sky chopping polarimeter - Design and performance

Details A star-and-sky chopping polarimeter - Design and performance A star-and-sky chopping polarimeter - Design and performance

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991opten..30.1415j&link_type=abstract

Optical Engineering (ISSN 0091-3286), vol. 30, Sept. 1991, p. 1415-1421.

Computer Science

Performance

19

Astronomical Polarimetry, Circular Polarization, Linear Polarization, Polarimeters, Stellar Luminosity, Data Processing, Data Reduction, Instrument Errors, Numerical Control

Scientific paper

A star-and-sky chopping polarimeter is developed 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 percent. 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.

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