Share Email Print

Proceedings Paper

Engineering concept and enabling technologies for a large single-aperture far-Infrared observatory (SAFIR/FAIR)
Author(s): Michael James Amato; Dominic J. Benford; Harvey S. Moseley; Juan Roman
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

"To take the next step in exploring this important part of the spectrum [30-300μm], the committee recommends the Single Aperture Far-Infrared Observatory (SAFIR)." - Astronomy and Astrophysics in the New Millennium, 2001. In response to this recommendation, we have undertaken a study of the enabling technologies for a large single aperture far-infrared telescope such as SAFIR. A broad list of science investigations was produced and used to generate an explicit list of science requirements, from which top-level engineering requirements were derived. From these requirements, we developed a conceptual design for the SAFIR observatory based on NGST's current designs. A detailed analysis has been made of the changes and technologies necessary to produce SAFIR. Crucial technologies requiring innovation include lightweight deployable optics, cryogenic cooling of optical elements and instruments, and large arrays of sensitive detectors. Cryogen-free refrigeration technologies are necessary for SAFIR's long mission lifetime, and will have to provide significant (~100mW) cooling power at 4K to cool the mirrors while providing very low temperatures (~50mK) for detector arrays. The detector arrays require wide wavelength coverage, thousands of continuum elements, and compatibility with broadband and spectroscopic instruments.

Paper Details

Date Published: 5 March 2003
PDF: 12 pages
Proc. SPIE 4850, IR Space Telescopes and Instruments, (5 March 2003); doi: 10.1117/12.461943
Show Author Affiliations
Michael James Amato, NASA Goddard Space Flight Ctr. (United States)
Dominic J. Benford, NASA Goddard Space Flight Ctr. (United States)
Harvey S. Moseley, NASA Goddard Space Flight Ctr. (United States)
Juan Roman, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 4850:
IR Space Telescopes and Instruments
John C. Mather, Editor(s)

© SPIE. Terms of Use
Back to Top