SOFIA Optical Design for the Aft Configuration

Details SOFIA Optical Design for the Aft Configuration SOFIA Optical Design for the Aft Configuration

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ames.rept.....d&link_type=abstract

Technical Report, National Aeronautics and Space Administration. Ames Research Center Moffett Field, CA United States

Astronomy and Astrophysics

Astronomy

Sofia (Airborne Observatory), Infrared Telescopes, Millimeter Waves, Apertures, Design Analysis, Field Of View, Mirrors, Optical Equipment

Scientific paper

The Stratospheric Observatory for Infrared Astronomy (SOFIA) is a planned NASA facility consisting of an infrared telescope of 2.5 meter system aperture flying in a modified Boeing 747. It will have an image diameter of 1.5 arc seconds, an operating wavelength range from visible through 1 millimeter, an 8 arc minute field of view, and a chopping secondary. the configuration is a Cassegrian with a diagonal tertiary to direct the beam to a Nasmyth focus. The new choice of a location aft of the wings allows the primary mirror to have about an f/1.4 focal ratio, which is preferable to f/1.1 previously planned for the forward location.

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