Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Segmented mirror coarse phasing with a dispersed fringe sensor: experiments on NGST's Wavefront Control Testbed

[+] Author Affiliations
Fang Shi, David C. Redding, Andrew E. Lowman, Catherine M. Ohara, Scott A. Basinger

Jet Propulsion Lab. (USA)

Charles W. Bowers

NASA Goddard Space Flight Ctr. (USA)

Laura A. Burns

Science Systems and Applications Inc. (USA)

Peter Petrone III

ManTech Systems Engineering Corp. (USA)

Proc. SPIE 4850, IR Space Telescopes and Instruments, 318 (March 4, 2003); doi:10.1117/12.461113
Text Size: A A A
From Conference Volume 4850

  • IR Space Telescopes and Instruments
  • John C. Mather
  • Waikoloa, Hawai'i, USA | August 22, 2002

abstract

A piston sensing and control algorithm for segmented mirror coarse phasing using a dispersed fringe sensor (DFS) has been developed for the Next Generation Space Telescope (NGST) wavefront sensing and control. The DFS can detect residual piston errors as large as the order of a depth-of-focus and can phase the segment mirrors with accuracy better than 0.1 microns, which is well within the capture range of fine phasing for NGST. A series of experiments have been carried out on the NGST's Wavefront Control Testbed (WCT) to validate the modeling results, evaluate the DFS performance, and systematically explore the factors that affect the DFS performance. This paper reports the testbed results for several critical issues of DFS performance, including DFS dynamic range, accuracy, fringe visibility, and the effects of segment mirror aberrations.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Fang Shi ; David C. Redding ; Andrew E. Lowman ; Charles W. Bowers ; Laura A. Burns, et al.
"Segmented mirror coarse phasing with a dispersed fringe sensor: experiments on NGST's Wavefront Control Testbed", Proc. SPIE 4850, IR Space Telescopes and Instruments, 318 (March 4, 2003); doi:10.1117/12.461113; http://dx.doi.org/10.1117/12.461113


Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Proceeding
Sign in or Create a personal account to Buy this proceeding ($15 for members, $18 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.