Optical modeling activities for NASA's James Webb Space Telescope (JWST): Part V. Operational alignment updates

Joseph M. Howard; Kong Q. Ha; Ron Shiri; J. Scott Smith; Gary Mosier; Danniella Muheim

doi:10.1117/12.790237

11 July 2008 Optical modeling activities for NASA's James Webb Space Telescope (JWST): Part V. Operational alignment updates

Joseph M. Howard, Kong Q. Ha, Ron Shiri, J. Scott Smith, Gary Mosier, Danniella Muheim

Author Affiliations +

Proceedings Volume 7017, Modeling, Systems Engineering, and Project Management for Astronomy III; 70170X (2008) https://doi.org/10.1117/12.790237
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

This paper is part five of a series on the ongoing optical modeling activities for the James Webb Space Telescope (JWST). The first two papers discussed modeling JWST on-orbit performance using wavefront sensitivities to predict line of sight motion induced blur, and stability during thermal transients. The third paper investigates the aberrations resulting from alignment and figure compensation of the controllable degrees of freedom (primary and secondary mirrors), which may be encountered during ground alignment and on-orbit commissioning of the observatory, and the fourth introduced the software toolkits used to perform much of the optical analysis for JWST. The work here models observatory operations by simulating line-of-sight image motion and alignment drifts over a two-week period. Alignment updates are then simulated using wavefront sensing and control processes to calculate and perform the corrections. A single model environment in Matlab is used for evaluating the predicted performance of the observatory during these operations.

Citation Download Citation

Joseph M. Howard, Kong Q. Ha, Ron Shiri, J. Scott Smith, Gary Mosier, and Danniella Muheim "Optical modeling activities for NASA's James Webb Space Telescope (JWST): Part V. Operational alignment updates", Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 70170X (11 July 2008); https://doi.org/10.1117/12.790237

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