A Study Of Surface Particulate Contamination On The Primary Mirror Of The Hubble Space Telescope

Author(s):  
Terence A. Facey
1994 ◽  
Vol 360 ◽  
Author(s):  
James L. Fanson

AbstractThis paper describes the development of a space qualified active mirror—the Articulating Fold Mirror—which forms part of the scheme for recovering the optical performance of the Hubble Space Telescope. Three Articulating Fold Mirrors are incorporated into the optical train of the Jet Propulsion Laboratory's Wide Field and Planetary Camera-2, which was installed into Hubble by astronauts in December, 1993. Each Articulating Fold Mirror utilizes six electrostrictive ceramic multilayer actuators to precisely position a mirror in tip and tilt in order to correct the spherical aberration of the Hubble Space Telescope's primary mirror. Flight qualification aspects of the electrostrictive actuators are described. Pre- and postrepair images from the Wide Field and Planetary Camera, showing the effect of the optical correction, are presented.


1993 ◽  
Vol 32 (10) ◽  
pp. 1703 ◽  
Author(s):  
L. Furey ◽  
T. Dubos ◽  
D. Hansen ◽  
J. Samuels-Schwartz

2004 ◽  
Vol 126 (04) ◽  
pp. 40-41

This article describes features of James Webb Space Telescope, which is going to take the place of the Hubble Space Telescope in 2011. The Webb telescope is an orbiting infrared observatory, and the project is managed by the NASA Goddard Space Flight Center in Greenbelt, Maryland. The Webb Space Telescope will use extremely large aperture, low-mass mirrors. Made in segments so they can be folded to fit into a rocket nose cone for flight, they will open and array themselves when they reach their destination. These robust mirrors must be fabricated rapidly and cost-effectively. There are significant manufacturing challenges in the composite backplanes for the primary mirror. These are to be made from boron composites for their stiffness. The analysis and manufacturing challenges in the backplane are the adhesives used to combine all the composite parts and the uniformity to which the composites themselves can be manufactured. The structure of the primary mirror for the Webb Telescope permits small adjustments.


1991 ◽  
Author(s):  
JEFFREY SPONSLER ◽  
MARK JOHNSTON ◽  
GLENN MILLER ◽  
ANTHONY KRUEGER ◽  
MICHAEL LUCKS ◽  
...  

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