Phasing the Webb Telescope

D. Scott Acton; Scott Knight; Maria Carrasquilla; Nick Weiser; Michaela Masciarelli; Sarah Jurczyk; Greg Rapp; Julio Mueckay; Erin Wolf; Jess Murphy; Larkin Carey; Eric Coppock; Chanda Walker; Joel Runnels; Garrett West; Greg Wirth; Brian Hicks; Katie Melbourne; Michael Gordon; Bob Brown; Stefano Grimaldi; Derek Sabatke; Ray Wright; Laura Coyle; Taylor Chonis; Kevin Whiteaker; Marshall Perrin; Tom Comeau; Charles-Philippe Lajoie; George Hartig; Tracy Beck; Matt Lallo; Mike Regan; Randal Telfer; Marcio Meléndez; Greg Brady; Laurent Pueyo; Nicolas Flagey; Bernard Kulp; Ed Nelan; Tom Zielinski; Alden Jurling; Matt Bergkoetter; Chuck Bowers; Bruce Dean; Lee Feinberg; Ritva Keski-Kuha; Jeff Kirk; Michael W. McElwain; Joe Howard

NASA NTRS · 20230011349

Phasing the Webb Telescope

Abstract

The James Webb Space Telescope (JWST) is a segmented deployable telescope, currently operating at L2. The telescope utilizes 6 degrees of freedom for adjustment of the Secondary Mirror (SM) and 7 degrees of freedom for adjustment of each of its 18 segments in the Primary Mirror (PM). After deployment, the PM segments and the SM arrived in their correct optical positions to within a ~1 mm, with accordingly large wavefront errors. A Wavefront Sensing and Controls (WFSC) process was executed to adjust each of these optical elements in order to correct the deployment errors and produce diffraction-limited images across the entire science field. This paper summarizes the application of the WFSC process.

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BibTeX RIS

D. Scott Acton, Scott Knight, Maria Carrasquilla, Nick Weiser, Michaela Masciarelli, Sarah Jurczyk, Greg Rapp, Julio Mueckay, Erin Wolf, Jess Murphy, Larkin Carey, Eric Coppock, Chanda Walker, Joel Runnels, Garrett West, Greg Wirth, Brian Hicks, Katie Melbourne, Michael Gordon, Bob Brown, Stefano Grimaldi, Derek Sabatke, Ray Wright, Laura Coyle, Taylor Chonis, Kevin Whiteaker, Marshall Perrin, Tom Comeau, Charles-Philippe Lajoie, George Hartig, Tracy Beck, Matt Lallo, Mike Regan, Randal Telfer, Marcio Meléndez, Greg Brady, Laurent Pueyo, Nicolas Flagey, Bernard Kulp, Ed Nelan, Tom Zielinski, Alden Jurling, Matt Bergkoetter, Chuck Bowers, Bruce Dean, Lee Feinberg, Ritva Keski-Kuha, Jeff Kirk, Michael W. McElwain, Joe Howard. 2022-08-27. Phasing the Webb Telescope. https://ntrs.nasa.gov/citations/20230011349

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