Title :
Optical Modeling of the Alignment and Test of the NASA James Webb Space Telescope
Author :
Howard, Joseph M. ; Hayden, Bill ; Keski-Kuha, Ritva ; Feinberg, Lee
Author_Institution :
NASA Goddard Space Flight Center, Greenbelt
Abstract :
Optical modeling challenges of the ground alignment plan and optical test and verification of the NASA James Webb space telescope are discussed. Issues such as back-out of the gravity sag of light-weighted mirrors, as well as the use of a sparse-aperture auto-collimating flat system are discussed. A walk-through of the interferometer based alignment procedure is summarized, and sensitivities from the sparse aperture wavefront test are included as examples.
Keywords :
aerospace instrumentation; aerospace testing; astronomical telescopes; infrared astronomy; mirrors; optical testing; NASA James Webb Space Telescope; gravity sag; interferometer based alignment; light-weighted mirrors; optical modeling; sparse-aperture auto-collimating flat system; telescope alignment; telescope test; Biomedical optical imaging; Gravity; Image segmentation; Mirrors; NASA; Optical interferometry; Optical sensors; Optical surface waves; Telescopes; Testing;
Conference_Titel :
Aerospace Conference, 2007 IEEE
Conference_Location :
Big Sky, MT
Print_ISBN :
1-4244-0524-6
Electronic_ISBN :
1095-323X
DOI :
10.1109/AERO.2007.353004
