Share Email Print
cover

Proceedings Paper

New method for characterizing the state of optical and opto-mechanical systems
Author(s): Babak Saif; Ritva Keski-Kuha; Lee Feinberg; David Chaney; Marcel Bluth; Perry Greenfield; Warren Hack; Scott Smith; James Sanders
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

James Webb Space Telescope Optical Telescope Element (OTE) is a three mirror anastigmat consisting of a 6.5 m primary mirror (PM), a secondary mirror (SM) and a tertiary mirror. The primary mirror is made out of 18 segments. The telescope and instruments will be assembled at Goddard Space Flight Center (GSFC) to build the Optical Telescope Element-Integrated Science Instrument Module (OTIS). The OTIS will go through environmental testing at GSFC before being transported to Johnson Space Center for testing at cryogenic temperature. The objective of the primary mirror Center of Curvature test (CoC) is to characterize the PM before and after the environmental testing for workmanship. This paper discusses the CoC test including both a surface figure test and a new method for characterizing the state of the primary mirror using high speed dynamics interferometry.

Paper Details

Date Published: 2 August 2014
PDF: 11 pages
Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91430C (2 August 2014); doi: 10.1117/12.2055243
Show Author Affiliations
Babak Saif, NASA Goddard Space Flight Ctr. (United States)
Ritva Keski-Kuha, NASA Goddard Space Flight Ctr. (United States)
Lee Feinberg, NASA Goddard Space Flight Ctr. (United States)
David Chaney, Ball Aerospace & Technologies Corp. (United States)
Marcel Bluth, ATK Spce Systems (United States)
Perry Greenfield, Space Telescope Science Institute (United States)
Warren Hack, Space Telescope Science Institute (United States)
Scott Smith, NASA Marshall Space Flight Ctr. (United States)
James Sanders, NASA Goddard Space Flight Ctr./Vantage Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 9143:
Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann; Mark Clampin; Giovanni G. Fazio; Howard A. MacEwen, Editor(s)

© SPIE. Terms of Use
Back to Top