Abstract
The field-of-view limitations of phased telescope arrays have been discussed extensively in the literature. Residual aberrations of the individual telescopes are perhaps the most fundamental error source for high-performance, wide-angle imaging phased telescope arrays.1 Simple telescope designs free from spherical aberration, coma, and astigmatism are readily obtained; however, field curvature and distortion severely limit the wide-angle performance of imaging phased telescope arrays.2 Much recent effort has thus been expended in obtaining telescope designs that are well corrected for both field curvature and distortion.3,4 However, the implementation of a given subtelescope design involves inevitable alignment errors that will primarily introduce third-order coma. An analytical treatment of the image degradation due to coma thus allowed us to establish alignment tolerances parametrically as a function of desired field of view, subaperture diameter, and array geometry.
© 1992 Optical Society of America
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