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Proceedings Paper

Detailed design of a deployable tertiary mirror for the Keck I telescope
Author(s): J. Xavier Prochaska; Chris Ratliff; Jerry Cabak; Alex Tripsas; Sean Adkins; Michael Bolte; David Cowley; Mike Dahler; Will Deich; Hilton Lewis; Jerry Nelson; Sam Park; Michael Peck; Drew Phillips; Mike Pollard; Bill Randolph; Dale Sandford; Jim Ward; Truman Wold
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Paper Abstract

Motivated by the ever increasing pursuit of science with the transient sky (dubbed Time Domain Astronomy or TDA), we are fabricating and will commission a new deployable tertiary mirror for the Keck I telescope (K1DM3) at the W.M. Keck Observatory. This paper presents the detailed design of K1DM3 with emphasis on the opto- mechanics. This project has presented several design challenges. Foremost are the competing requirements to avoid vignetting the light path when retracted against a sufficiently rigid system for high-precision and repeatable pointing. The design utilizes an actuated swing arm to retract the mirror or deploy it into a kinematic coupling. The K1DM3 project has also required the design and development of custom connections to provide power, communications, and compressed air to the system. This NSF-MRI funded project is planned to be commissioned in Spring 2017.

Paper Details

Date Published: 15 July 2016
PDF: 22 pages
Proc. SPIE 9910, Observatory Operations: Strategies, Processes, and Systems VI, 99102I (15 July 2016); doi: 10.1117/12.2233237
Show Author Affiliations
J. Xavier Prochaska, Univ. of California Observatories (United States)
Chris Ratliff, Univ. of California Observatories (United States)
Jerry Cabak, Univ. of California Observatories (United States)
Alex Tripsas, Univ. of California Observatories (United States)
Sean Adkins, W. M. Keck Observatory (United States)
Michael Bolte, Univ. of California Observatories (United States)
David Cowley, Univ. of California Observatories (United States)
Mike Dahler, W. M. Keck Observatory (United States)
Will Deich, Univ. of California Observatories (United States)
Hilton Lewis, W. M. Keck Observatory (United States)
Jerry Nelson, Univ. of California Observatories (United States)
Sam Park, W. M. Keck Observatory (United States)
Michael Peck, Univ. of California Observatories (United States)
Drew Phillips, Univ. of California Observatories (United States)
Mike Pollard, W. M. Keck Observatory (United States)
Bill Randolph, W. M. Keck Observatory (United States)
Dale Sandford, Univ. of California Observatories (United States)
Jim Ward, Univ. of California Observatories (United States)
Truman Wold, W. M. Keck Observatory (United States)


Published in SPIE Proceedings Vol. 9910:
Observatory Operations: Strategies, Processes, and Systems VI
Alison B. Peck; Robert L. Seaman; Chris R. Benn, Editor(s)

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