NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login

Press Enter or click the Search button to begin your search.

Back to Results
Absolute Characterization of Gravity Sag for Light-Weighted OpticsGravity-sag (G-sag) for large space-based telescopes is a critical error budget element that must be taken in consideration. Absolute characterization of gravity sag provides necessary information when testing light weighted optics so that true optical performance can be determined. A method is presented for characterizing G-sag to obtain the 0-G optical surface.
Document ID
20220012218
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Tomasz Lis (Marshall Space Flight Center Redstone Arsenal, Alabama, United States)
Stephen Cheney (Marshall Space Flight Center Redstone Arsenal, Alabama, United States)
H Philip Stahl (Marshall Space Flight Center Redstone Arsenal, Alabama, United States)
Date Acquired
August 8, 2022
Subject Category
Optics
Meeting Information
Meeting: SPIE Optical Manufacturing and Testing XIV
Location: San Diego, CA
Country: US
Start Date: August 21, 2022
End Date: August 25, 2022
Sponsors: International Society for Optics and Photonics
Funding Number(s)
WBS: 141108.04.02.01.30
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Technical Review
Single Expert
Keywords
wavefront error
gravity sag,
space telescopes
light-weighted mirror
optical test

Related Records

There are no records associated with this record.
No Preview Available