Hatfield near-infrared polarimeter

L.J. Cox, J. Hough, A. McCall

Research output: Contribution to journalArticlepeer-review

Abstract

The design of the Hatfield Polytechnic Observatory's near-infrared (IJHKLM) polarimeter is described and its performance iliustrated by some representative observations on bright standard stars. Preliminary measurements show an instrumental polarization (in units of l0- f) of 5 1 3 (K), 6 15 (H), 8 14(J) and 3 14(I), comparable with the instrumental polarization of the telescope used. The problems which were encountered in achieving this level of instrumental polarization without sacrificing either overall system transmission or modulation efficiency are discussed.
Original languageEnglish
Pages (from-to)199-205
JournalMonthly Notices of the Royal Astronomical Society
Volume185
Issue number1
Publication statusPublished - 1978

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