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CMS-2010-022

Laser Radar Metrology Measurements Through a Chamber Window of James Webb Space Telescope Alignment Fixtures During Cryogenic Testing

Anthony Slotwinski, Theodore Hadjimichael, David Kubalak, Pamela Davila, Bente Eegholm, William Eichhorn, Joseph E. Hayden, Eric Mentzell, Raymond Ohl, Gregory Scharfstein, Randal Telfer

Title graphic for CMS-2010-022: Laser Radar Metrology Measurements Through a Chamber Window of James Webb Space Telescope Alignment Fixtures During Cryogenic Testing

Abstract

The James Webb Space Telescope's alignment fixtures had to be measured at cryogenic temperature, which meant measuring them from outside the chamber, through its window. This talk covers laser radar metrology doing exactly that: what a chamber window does to the measurement, what can be recovered, and what the results were – a large NASA Goddard, Sigma Space, Orbital Sciences and Nikon Metrology team reporting on one of the harder measurement problems in the programme.

Also published as CMSJ-06-1-04, The Journal of the CMSC, Volume 6, Number 1 (Spring 2011).

Cite this paper

Anthony Slotwinski, Theodore Hadjimichael, David Kubalak, Pamela Davila, Bente Eegholm, William Eichhorn, Joseph Hayden, Eric Mentzell, Raymond Ohl, Gregory Scharfstein, Randal Telfer. Nikon Metrology; NASA Goddard Space Flight Center; Sigma Space Corp.; Flexure Engineering, LLC; Orbital Sciences Corp. Presented at the Coordinate Metrology Systems Conference 2010, Reno, Nevada, July 12-16, 2010. Coordinate Metrology Society, reference CMS-2010-022.