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Optical Design of the Developmental Cryogenic Active Telescope Testbed (DCATT)In the summer of 1996, three Study teams developed conceptual designs and mission architectures for the Next Generation Space Telescope (NGST). Each group highlighted areas of technology development that need to be further advanced to meet the goals of the NGST mission. The most important areas for future study included: deployable structures, lightweight optics, cryogenic optics and mechanisms, passive cooling, and on-orbit closed loop wavefront sensing and control. NASA and industry are currently planning to develop a series of ground testbeds and validation flights to demonstrate many of these technologies. The Deployed Cryogenic Active Telescope Testbed (DCATT) is a system level testbed to be developed at Goddard Space Flight Center in three phases over an extended period of time. This testbed will combine an actively controlled telescope with the hardware and software elements of a closed loop wavefront sensing and control system to achieve diffraction limited imaging at 2 microns. We will present an overview of the system level requirements, a discussion of the optical design, and results of performance analyses for the Phase 1 ambient concept for DCATT,
Document ID
19990064452
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Davila, Pam
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Wilson, Mark
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Young, Eric W.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Lowman, Andrew E.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Redding, David C.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA United States)
Date Acquired
August 18, 2013
Publication Date
January 1, 1997
Subject Category
Optics
Meeting Information
Meeting: Astronomical Telescopes and Instrumentation
Location: Kona, HI
Country: United States
Start Date: March 20, 1998
End Date: March 28, 1998
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Other

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