Polarization comparison between on-axis and off-axis dual reflector telescopes: Zemax and Grasp8 simulations

Details Polarization comparison between on-axis and off-axis dual reflector telescopes: Zemax and Grasp8 simulations Polarization comparison between on-axis and off-axis dual reflector telescopes: Zemax and Grasp8 simulations

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003newar..47.1091t&link_type=abstract

New Astronomy Reviews, Volume 47, Issue 11-12, p. 1091-1096.

Astronomy and Astrophysics

Astronomy

2

Scientific paper

The cross-polarization performance for an off-axis dual reflector telescope is shown to be equivalent to an on-axis telescope when used for a large-format focal plane array. The need for low sidelobes forces the on-axis designs to high curvature, which in turn leads to high cross-polarization at the edge of the field. A scheme for correcting instrumental-polarization is presented, as well as a full design for a polarization-pure optical system capable of supporting a 1000-element focal plane array.

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