Optical alignment of the JWST ISIM to the OTE simulator (OSIM): current concept and design studies

Bradley J. Frey; Pamela S. Davila; John G. Hagopian; James M. Marsh; Raymond G. Ohl; Mark E. Wilson; Philip J. Young

doi:10.1117/12.736050

17 September 2007 Optical alignment of the JWST ISIM to the OTE simulator (OSIM): current concept and design studies

Bradley J. Frey, Pamela S. Davila, John G. Hagopian, James M. Marsh, Raymond G. Ohl, Mark E. Wilson, Philip J. Young

Proceedings Volume 6692, Cryogenic Optical Systems and Instruments XII; 66920R (2007) https://doi.org/10.1117/12.736050
Event: Optical Engineering + Applications, 2007, San Diego, California, United States

Abstract

The James Webb Space Telescope's (JWST) Integrated Science Instrument Module (ISIM) contains the observatory's four science instruments and their support subsystems. During alignment and test of the integrated ISIM at NASA's Goddard Space Flight Center (GSFC), the Optical telescope element SIMulator (OSIM) will be used to optically stimulate the science instruments to verify their operation and performance. In this paper we present the design of two cryogenic alignment fixtures that will be used to align the OSIM to the ISIM during testing at GSFC. These fixtures, the Master Alignment Target Fixture (MATF) and the ISIM Alignment Target Fixture (IATF), will provide continuous, six degree of freedom feedback to OSIM during initial ambient alignment as well as during cryogenic vacuum testing. These fixtures will allow us to position the OSIM and detect OSIM-ISIM absolute alignment to better than 180 microns in translation and 540 micro-radians in rotation. We will provide a brief overview of the OSIM system and we will also discuss the relevance of these fixtures in the context of the overall ISIM alignment and test plan.

Citation Download Citation

Bradley J. Frey, Pamela S. Davila, John G. Hagopian, James M. Marsh, Raymond G. Ohl, Mark E. Wilson, and Philip J. Young "Optical alignment of the JWST ISIM to the OTE simulator (OSIM): current concept and design studies", Proc. SPIE 6692, Cryogenic Optical Systems and Instruments XII, 66920R (17 September 2007); https://doi.org/10.1117/12.736050

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

James Webb Space Telescope

Optical alignment

Cryogenics

Aerospace engineering

Device simulation

Optical components

Optical cryogenics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years