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Proceedings Paper

Upgrading Telescopes By Active Pupil Wavefront Correction
Author(s): John E. Stacy; Aden B. Meinel; Marjorie P. Meinel
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Paper 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.

Paper Details

Date Published: 14 February 1986
PDF: 5 pages
Proc. SPIE 0554, 1985 International Lens Design Conference, (14 February 1986); doi: 10.1117/12.949222
Show Author Affiliations
John E. Stacy
Aden B. Meinel
Marjorie P. Meinel

Published in SPIE Proceedings Vol. 0554:
1985 International Lens Design Conference
Duncan T. Moore; William H. Taylor, Editor(s)

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