Wide-field Fizeau imaging telescope: experimental results

Details Wide-field Fizeau imaging telescope: experimental results Wide-field Fizeau imaging telescope: experimental results

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006apopt..45.4235k&link_type=abstract

Applied Optics IP, vol. 45, Issue 18, pp.4235-4240

Physics

Optics

4

Phased-Array Imaging Systems, Telescopes

Scientific paper

A nine-aperture, wide-field Fizeau imaging telescope has been built at the Lockheed-Martin Advanced Technology Center. The telescope consists of nine, 125 mm diameter collector telescopes coherently phased and combined to form a diffraction-limited image with a resolution that is consistent with the 610 mm diameter of the telescope. The phased field of view of the array is 1 μrad. The measured rms wavefront error is 0.08 waves rms at 635 nm. The telescope is actively controlled to correct for tilt and phasing errors. The control sensing technique is the method known as phase diversity, which extracts wavefront information from a pair of focused and defocused images. The optical design of the telescope and typical performance results are described.

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