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Proceedings Paper

PAMELA: progress report on a 0.5-m-diam telescope with a 36-segment adaptive primary mirror
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Paper Abstract

The Phased Array Mirror, Extendible Large Aperture telescope has been fully assembled and testing has started. The telescope is the first to have a fully adaptive primary mirror, which consists of 36 hexagonal injection-molded Pyrex segments that are seven centimeters flat-to- flat. The segments are mounted on three long-throw voice-coil actuators for tip, tilt, and piston motion. The segment tiles are measured with a Hartmann-Shack wavefront sensor and the piston errors between adjacent segments are measured via inductive edge-sensors. The personnel at NASA MSFC are performing a significant amount of testing in the area of controls/structure interactions; therefore, in addition to a description of the optical performance and aberration correction capability of the telescope, a description of the plan to model the mechanical structure with emphasis on how this will interact with the adaptive optics system is presented.

Paper Details

Date Published: 31 May 1994
PDF: 10 pages
Proc. SPIE 2201, Adaptive Optics in Astronomy, (31 May 1994); doi: 10.1117/12.176125
Show Author Affiliations
Anthony D. Gleckler, Kaman Aerospace Corp. (United States)
Gregory H. Ames, Kaman Sciences Corp. (United States)
David J. Markason, Kaman Aerospace Corp. (United States)
Skip Radau, Kaman Aerospace Corp. (United States)
Henry B. Waites, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 2201:
Adaptive Optics in Astronomy
Mark A. Ealey; Fritz Merkle, Editor(s)

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