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Proceedings Paper

Design and current status of the reconstructor for Altair: the Gemini North adaptive optics system
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Paper Abstract

Altair is the facility Adaptive Optics (AO) system for the Gemini North Telescope on Mauna Kea, Hawaii. Designed to take advantage of the excellent natural seeing conditions that Gemini North will experience, Altair is also unique in that the Deformable Mirror (DM) is conjugate to a fixed altitude of 6.5 kilometers. Running at a control loop speed of at least one kHz, the reconstructor for this high order AO system is subject to a number of conditions that drove its design and implementation. Initial studies indicated that a single RISC CPU would be capable of performing the reconstruction for Altair, as opposed to the more common solution of multiple DSP processors. We present some of these conditions, the results of a throughput benchmark test that verified the choice of hardware, some components of the processing steps of the reconstructor and a summary of the current status of the project.

Paper Details

Date Published: 7 July 2000
PDF: 10 pages
Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); doi: 10.1117/12.390362
Show Author Affiliations
Leslie K. Saddlemyer, Herzberg Institute of Astrophysics/National Research Council Canada (Canada)
Glen Herriot, Herzberg Institute of Astrophysics/National Research Council Canada (Canada)
Jean-Pierre Veran, Herzberg Institute of Astrophysics/National Research Council Canada (Canada)

Published in SPIE Proceedings Vol. 4007:
Adaptive Optical Systems Technology
Peter L. Wizinowich, Editor(s)

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