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Proceedings Paper

PAMELA: phase I testing and verification on a 0.5 meter diameter telescope with a 36 segment adaptive primary mirror
Author(s): Gregory H. Ames; Richard T. Howard; Jeffrey L. Lindner; Edward E. Montgomery; Alan F. Patterson; John M. Rakoczy; Glenn W. Zeiders; Henry B. Waites
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Paper Abstract

The Phased Array Mirror, Extendible Large Aperture (PAMELA) prototype telescope phase I testing and verification has been completed. The prototype 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 segments' tilts are measured with a Hartmann- Shack wavefront sensor, and the piston errors between adjacent segments are measured via inductive edge-sensors. The 0.5 meter telescope was successfully operated with simultaneously closed tilt and piston control loops for the entire array. Phase I test and verification results are shown for the closed loop operations.

Paper Details

Date Published: 26 April 1995
PDF: 18 pages
Proc. SPIE 2376, Laser Power Beaming II, (26 April 1995); doi: 10.1117/12.208202
Show Author Affiliations
Gregory H. Ames, Blue Line Engineering (United States)
Richard T. Howard, NASA Marshall Space Flight Ctr. (United States)
Jeffrey L. Lindner, NASA Marshall Space Flight Ctr. (United States)
Edward E. Montgomery, NASA Marshall Space Flight Ctr. (United States)
Alan F. Patterson, NASA Marshall Space Flight Ctr. (United States)
John M. Rakoczy, NASA Marshall Space Flight Ctr. (United States)
Glenn W. Zeiders, AmDyn Corp. (United States)
Henry B. Waites, NASA Marshall Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 2376:
Laser Power Beaming II
Harold E. Bennett; Richard D. Doolittle, Editor(s)

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