PAMELA: phase I testing and verification on a 0.5 meter diameter telescope with a 36 segment adaptive primary mirror

Gregory H. Ames; Richard T. Howard; Jeffrey L. Lindner; Edward E. Montgomery IV; Alan F. Patterson; John M. Rakoczy; Glenn W. Zeiders Jr.; Henry B. Waites

doi:10.1117/12.208202

26 April 1995 PAMELA: phase I testing and verification on a 0.5-m diameter telescope with a 36-segment adaptive primary mirror

Gregory H. Ames, Richard T. Howard, Jeffrey L. Lindner, Edward E. Montgomery IV, Alan F. Patterson, John M. Rakoczy, Glenn W. Zeiders Jr., Henry B. Waites

Author Affiliations +

Proceedings Volume 2376, Laser Power Beaming II; (1995) https://doi.org/10.1117/12.208202
Event: Photonics West '95, 1995, San Jose, CA, United States

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.

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Gregory H. Ames, Richard T. Howard, Jeffrey L. Lindner, Edward E. Montgomery IV, Alan F. Patterson, John M. Rakoczy, Glenn W. Zeiders Jr., and Henry B. Waites "PAMELA: phase I testing and verification on a 0.5-m diameter telescope with a 36-segment adaptive primary mirror", Proc. SPIE 2376, Laser Power Beaming II, (26 April 1995); https://doi.org/10.1117/12.208202

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