A Fourier Transform Telescope For Sub-Arcsecond Imaging Of X-Rays And Gamma Rays

C. J. Crannell; G. J. Hurford; L. E. Orwig; T. A. Prince

doi:10.1117/12.950400

21 February 1986 A Fourier Transform Telescope For Sub-Arcsecond Imaging Of X-Rays And Gamma Rays

C. J. Crannell, G. J. Hurford, L. E. Orwig, T. A. Prince

Proceedings Volume 0571, Large Optics Technology; (1986) https://doi.org/10.1117/12.950400
Event: 29th Annual Technical Symposium, 1985, San Diego, United States

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.

Citation Download Citation

C. J. Crannell, G. J. Hurford, L. E. Orwig, and T. A. Prince "A Fourier Transform Telescope For Sub-Arcsecond Imaging Of X-Rays And Gamma Rays", Proc. SPIE 0571, Large Optics Technology, (21 February 1986); https://doi.org/10.1117/12.950400

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