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Title: Cryogenic (70K) measurement of an all-composite 2-meter diameter mirror
Authors: Catanzaro, B.

Issue Date: 22-Aug-2001
Citation: Optomechanical Design and Engineering 2001
Pasadena, CA, USA
Abstract: The Herschel Space observatory (formerly known as FIRST) consists of a 3.5 m space telescope. In order to develop lightweight telescope technology suitable for this mission, COI designed and fabricated aspherical, f/1 2 m aperture prototype primary mirror using solely carbon fiber reinforced polypmer (CFR) materials. To assess the performance of this technology, optical metrology of the mirror surface was performed from ambient to an intended operational temperature for IR-telescopes of 70K. Testing was performed horizontally in a cryogenic vacuum chamber at Arnold Engineering Development Center (AEDC), Tennessee.
Appears in Collections:JPL TRS 1992+

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