Measurement of magnification of IR telescopes

Details Measurement of magnification of IR telescopes Measurement of magnification of IR telescopes

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987spie..807..119j&link_type=abstract

IN: Passive infrared systems and technology; Proceedings of the Meeting, The Hague, Netherlands, Mar. 31-Apr. 1, 1987 (A88-51501

Physics

Infrared Imagery, Infrared Telescopes, Magnification, Calibrating, Cathode Ray Tubes, Measurement

Scientific paper

The magnification factor of IR and thermal-band afocal telescopes is difficult to measure to accuracies in excess of 1 percent. Attention is presently given to measurement methods that have been experimentally evaluated in pursuit of a target accuracy of 0.1 percent, for the case of a scanning thermal imaging system operating in the 8-12 micron spectral region. Results are presented for a nominally 3X telescope. An interferometric method is noted to be the most repeatable and accurate.

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