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Optical Engineering

System for establishing best focus for the Orbiting Carbon Observatory instrument
Author(s): Carl Christian Liebe; Harold R. Pollock; Brett Hannah; Randall K. Bartman; Costin Radulescu; Mayer Rud; Joseph A. Esposito
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Paper Abstract

A technology for establishing best focus of an optical system is described. This technology was recently used to establish best focus of the Orbiting Carbon Observatory spectrometers while the instrument was undergoing thermal-vacuum testing. Three piezo-actuated motors were used to adjust the tip, tilt, and piston of a focal plane assembly relative to the spectrometer's optical system. A set of optical displacement sensors measured tip-tilt-piston throughout the focusing process. With best focus established and confirmed using a pupil-slicing technique, the corresponding sensor measurements were used to specify the geometry and dimensions of a precision-ground shim ring.

Paper Details

Date Published: 1 July 2009
PDF: 9 pages
Opt. Eng. 48(7) 073605 doi: 10.1117/1.3180867
Published in: Optical Engineering Volume 48, Issue 7
Show Author Affiliations
Carl Christian Liebe, Jet Propulsion Lab. (United States)
Harold R. Pollock, Hamilton Sundstrand Space, Land & Sea (United States)
Brett Hannah, Jet Propulsion Lab. (United States)
Randall K. Bartman, Jet Propulsion Lab. (United States)
Costin Radulescu, Jet Propulsion Lab. (United States)
Mayer Rud, Jet Propulsion Lab. (United States)
Joseph A. Esposito, Hamilton Sundstrand Space, Land & Sea (United States)

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