Optical diagnostic equipment for evaluating a wide field of view phased array telescope

Details Optical diagnostic equipment for evaluating a wide field of view phased array telescope Optical diagnostic equipment for evaluating a wide field of view phased array telescope

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1236..426d&link_type=abstract

IN: Advanced technology optical telescopes IV; Proceedings of the Meeting, Tucson, AZ, Feb. 12-16, 1990. Part 1 (A91-23201 08-89

Physics

Optics

Image Analysis, Optical Correction Procedure, Phased Arrays, Telescopes, Block Diagrams, Equipment Specifications, Field Of View, Optical Equipment, Point Spread Functions, Systems Engineering

Scientific paper

A key feature of the Multipurpose Multiple Telescope Testbed (MMTT) is its relatively wide field of view -- up to 30 arcminutes total. A thorough evaluation of the telescope array necessitates some form of image analysis over this field. System designers chose the star test, here modified to simltaneously display point spread functions (PSFs) at several locations in the image plane. Deviations of the image structure from ideal indicate control system deficiencies. Diagnostics hardware was designed and built to both simulate numerous unresolved light sources throughout the field of view and to display several of the corresponding images for detailed analysis. The resultant multiple target generator is an array of precision pinholes complete with beam-converting optics that require minimal alignment. PSFs are displayed with modern solid-state video equipment. Image irradiance cross-sections can be readily compared with theoretical predictions.

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