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Proceedings Paper

A Fourier Transform Telescope For Sub-Arcsecond Imaging Of X-Rays And Gamma Rays
Author(s): C. J. Crannell; G. J. Hurford; L. E. Orwig; T. A. Prince
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Paper Abstract

This paper describes a Fourier transform telescope designed to image solar flare X-rays and gamma rays at energies up to 1 MeV with arcsecond or subarcsecond resolution. The imaging technique makes use of a bigrid collimator divided into a number of smaller areas called subcollimators. The grids in each subcollimator consist of a set of linear apertures so configured that each subcollimator provides a measurement of a single Fourier component of the angular distribution of the source. The imaging concept is therefore a mathematical analog to aperture synthesis in radio astronomy. For X-ray and gamma-ray astronomy, this approach has significant advantages in terms of relaxed requirements for position sensitivity in the detector and for control of grid alignment in the large scale telescope structure. The concept of the Fourier transform telescope will be illustrated with numerical parameters of a version now under study for the Pinhole/Occulter Facility.

Paper Details

Date Published: 21 February 1986
PDF: 7 pages
Proc. SPIE 0571, Large Optics Technology, (21 February 1986); doi: 10.1117/12.950400
Show Author Affiliations
C. J. Crannell, NASA/GSFC (United States)
G. J. Hurford, California Institute of Technology (United States)
L. E. Orwig, NASA/GSFC (United States)
T. A. Prince, California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 0571:
Large Optics Technology
Gregory M. Sanger, Editor(s)

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