Computer Science – Performance
Scientific paper
Jan 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984spie..445..295h&link_type=abstract
IN: Instrumentation in astronomy V; Proceedings of the Fifth Meeting, London, England, September 7-9, 1983 (A85-25360 10-89). Be
Computer Science
Performance
2
Reflecting Telescopes, Spaceborne Telescopes, Wide Angle Lenses, Design, Fabrication, Field Of View, High Resolution, Performance Tests, Point Spread Functions, Ultraviolet Telescopes
Scientific paper
An all-reflective wide-angle flat-field telescope (WAFFT) designed and built at Goddard Space Flight Center demonstrates the markedly improved wide-angle imaging capability which can be achieved with a design based on a recently announced class of unobscured 3-mirror optical systems. Astronomy and earth observation missions in space dictate the necessity or preference for wide-angle all-reflective systems which can provide UV through IR wavelength coverage and tolerate the space environment. An initial prototype unit has been designed to meet imaging requirements suitable for monitoring the ultraviolet sky from space. The unobscured f/4, 36 mm efl system achieves a full 20 x 30 deg field of view with resolution over a flat focal surface that is well matched for use with advanced ultraviolet image array detectors. Aspects of the design and fabrication approach, which have especially important bearing on the system solution, are reviewed; and test results are compared with the analytic performance predictions. Other possible applications of the WAFFT class of imaging system are briefly discussed. The exceptional wide-angle, high quality resolution, and very wide spectral coverage of the WAFFT-type optical system could make it a very important tool for future space research.
Hallam Kenneth L.
Howell B. J.
Wilson Mark E.
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