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Dual-Channel Multi-Purpose TelescopeA dual-channel telescope allows for a wide-field telescope design wit h a good, narrow field channel of fewer surfaces for shorter-wavelen gth or planet-finding applications. The design starts with a Korsch three-mirror-anastigmat (TMA) telescope that meets the mission criter ia for image quality over a wide field of view. The internal image a t the Cassegrain focus is typically blurry due to the aberration bala ncing among the three mirrors. The Cassegrain focus is then re-optim ized on the axis of the system where the narrow field channel instru ment is picked off by bending the primary mirror.
Document ID
20090041763
Acquisition Source
Goddard Space Flight Center
Document Type
Other - NASA Tech Brief
Authors
Howard, Joseph M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Content, David
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
December 1, 2009
Publication Information
Publication: NASA Tech Briefs, December 2009
Subject Category
Optics
Report/Patent Number
GSC-15574-1
Distribution Limits
Public
Copyright
Public Use Permitted.
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