1 February 1986 Focal Plane Optics In Far-Infrared And Submillimeter Astronomy
Author Affiliations +
Abstract
The construction of airborne observatories, high mountaintop observatories, and space observatories designed especially for infrared and submillimeter astronomy has opened fields of research requiring new optical techniques. A typical far-IR photometric study involves measurement of a continuous spectrum in several passbands between ~30 µm and 1000 µm and diffraction-limited mapping of the source. At these wavelengths, diffraction effects strongly influence the design of the field optics systems that couple the incoming flux to the radiation sensors (cold bolometers). The Airy diffraction disk for a typical telescope at submillimeter wavelengths (~100 um to 1000 um) is many millimeters in diameter; the size of the field stop must be comparable. The dilute radiation at the stop is fed through a Winston nonimaging concentrator to a small cavity containing the bolometer. The purpose of this paper is to review the principles and techniques of infrared field optics systems, including spectral filters, concentrators, cavities, and bolometers (as optical elements), with emphasis on photometric systems for wavelengths longer than 60 µm.
Roger H. Hildebrand, Roger H. Hildebrand, } "Focal Plane Optics In Far-Infrared And Submillimeter Astronomy," Optical Engineering 25(2), 252323 (1 February 1986). https://doi.org/10.1117/12.7973824 . Submission:
JOURNAL ARTICLE
8 PAGES


SHARE
RELATED CONTENT

Two-Dimensional Imaging In Infrared Astronomy
Proceedings of SPIE (November 29 1983)
Stratospheric Observatory for Infrared Astronomy (SOFIA)
Proceedings of SPIE (August 21 2009)
The role of the tropopause layer altitude on the infrared...
Proceedings of SPIE (November 10 2004)
SOFIA: progress to initial science flights
Proceedings of SPIE (August 05 2010)

Back to Top