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Proceedings Paper

Tunable narrowband birefringent filters for astronomical imaging
Author(s): Peter J. Miller
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Paper Abstract

Tunable optical retarders made of liquid crystal material can be built with excellent spatial and angular response. These elements have been used to construct birefringent filters which are electronically tunable. Initial breadboard systems realize passbands similar to interference filters, and filters are planned with sub-Angstrom passband. Any desired wavelength in the tuning range may be selected in a random-access fashion, in a few milliseconds. One of these filters has been successfully used recently to image the solar photosphere in the 1.2 - 1.6 micron range at the McMath solar telescope at Kitt Peak.

Paper Details

Date Published: 1 July 1990
PDF: 8 pages
Proc. SPIE 1235, Instrumentation in Astronomy VII, (1 July 1990); doi: 10.1117/12.19110
Show Author Affiliations
Peter J. Miller, Cambridge Research and Instrumentation, Inc. (United States)


Published in SPIE Proceedings Vol. 1235:
Instrumentation in Astronomy VII
David L. Crawford, Editor(s)

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