James Webb Space Telescope Optical Simulation Testbed I: overview and first results

Marshall D. Perrin; Rémi Soummer; Élodie Choquet; Mamadou N'Diaye; Olivier Levecq; Charles-Philippe Lajoie; Marie Ygouf; Lucie Leboulleux; Sylvain Egron; Rachel Anderson; Chris Long; Erin Elliott; George Hartig; Laurent Pueyo; Roeland van der Marel; Matt Mountain

doi:10.1117/12.2056936

2 August 2014 James Webb Space Telescope Optical Simulation Testbed I: overview and first results

Marshall D. Perrin, Rémi Soummer, Élodie Choquet, Mamadou N'Diaye, Olivier Levecq, Charles-Philippe Lajoie, Marie Ygouf, Lucie Leboulleux, Sylvain Egron, Rachel Anderson, Chris Long, Erin Elliott, George Hartig, Laurent Pueyo, Roeland van der Marel, Matt Mountain

Author Affiliations +

Proceedings Volume 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave; 914309 (2014) https://doi.org/10.1117/12.2056936
Event: SPIE Astronomical Telescopes + Instrumentation, 2014, Montréal, Quebec, Canada

Abstract

The James Webb Space Telescope (JWST) Optical Simulation Testbed (JOST) is a tabletop workbench to study aspects of wavefront sensing and control for a segmented space telescope, including both commissioning and maintenance activities. JOST is complementary to existing optomechanical testbeds for JWST (e.g. the Ball Aerospace Testbed Telescope, TBT) given its compact scale and flexibility, ease of use, and colocation at the JWST Science & Operations Center. We have developed an optical design that reproduces the physics of JWST's three-mirror anastigmat using three aspheric lenses; it provides similar image quality as JWST (80% Strehl ratio) over a field equivalent to a NIRCam module, but at HeNe wavelength. A segmented deformable mirror stands in for the segmented primary mirror and allows control of the 18 segments in piston, tip, and tilt, while the secondary can be controlled in tip, tilt and x, y, z position. This will be sufficient to model many commissioning activities, to investigate field dependence and multiple field point sensing & control, to evaluate alternate sensing algorithms, and develop contingency plans. Testbed data will also be usable for cross-checking of the WFS&C Software Subsystem, and for staff training and development during JWST's five- to ten-year mission.

Citation Download Citation

Marshall D. Perrin, Rémi Soummer, Élodie Choquet, Mamadou N'Diaye, Olivier Levecq, Charles-Philippe Lajoie, Marie Ygouf, Lucie Leboulleux, Sylvain Egron, Rachel Anderson, Chris Long, Erin Elliott, George Hartig, Laurent Pueyo, Roeland van der Marel, and Matt Mountain "James Webb Space Telescope Optical Simulation Testbed I: overview and first results", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 914309 (2 August 2014); https://doi.org/10.1117/12.2056936

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