Upgrading Telescopes By Active Pupil Wavefront Correction

John E. Stacy; Aden B. Meinel; Marjorie P. Meinel

doi:10.1117/12.949222

14 February 1986 Upgrading Telescopes By Active Pupil Wavefront Correction

John E. Stacy, Aden B. Meinel, Marjorie P. Meinel

Proceedings Volume 0554, 1985 International Lens Design Conference; (1986) https://doi.org/10.1117/12.949222
Event: 1985 International Lens Design Conference, 1985, Cherry Hill, United States

Abstract

Exit pupil correction of the Large Deployable Reflector's (a proposed IR to sub-mm space telescope) segmented primary can be done by reimaging it onto a like segmented surface at the exit pupil. This allows the primary to be more flexible, the adaptive element to be smaller, and the supporting structure to be cheaper than if all correction were performed at a stiffly supported primary. We consider piston, tilt, and decenter errors of an annulus of the primary and show the equations for required corrections. To verify these, we simulate the perturbations with spline functions in the lens design program ACCOSV. Strehl ratios used to measure image quality show that a piston error of 1 mm is fully corrected over a 5 arcmin field for an f/10 system with a 0.7 n.a. primary at 30 micrometers. Limits of correction are also shown for tilt and decenter errors of segments. Tolerances are given for tilt and decenter errors of the reimaging optics also.

Citation Download Citation

John E. Stacy, Aden B. Meinel, and Marjorie P. Meinel "Upgrading Telescopes By Active Pupil Wavefront Correction", Proc. SPIE 0554, 1985 International Lens Design Conference, (14 February 1986); https://doi.org/10.1117/12.949222

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