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A Fourier Transform Telescope for Sub-arcsecond Imaging of X-Rays and Gamma Rays

Crannell, C. J. and Hurford, G. J. and Orwig, L. E. and Prince, T. A. (1985) A Fourier Transform Telescope for Sub-arcsecond Imaging of X-Rays and Gamma Rays. In: Large Optics Technology. Proceedings of SPIE. No.571. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, pp. 1-7.

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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.

Item Type:Book Section
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Prince, T. A.0000-0002-8850-3627
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Additional Information:© 1985 SPIE. The imaging techniques described here have been stimulated by contributions form a large number of individuals throughout the high-energy solar physics and astrophysics community. Extensive discussion and review has come from NASA working groups and study teams, namely the Hard X-ray Imaging Facility Definition Team under L. E. Peterson, the Pinhole/Occulter Facility Science Working Group under H. R. Hudson and E. Tandberg-Hanssen, The MAX '91 Science Study Committee under B. R. Dennis, and the High-Energy Facility Workshop for the Advanced Solar Observatory under E. P. Chupp. At Caltech this work is supported by NSF grant ATM-83-09955 and NASA grant NGR 05-002-160.
Group:Space Radiation Laboratory
Funding AgencyGrant Number
NASANGR 05-002-160
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Other Numbering System NameOther Numbering System ID
Space Radiation Laboratory1985-25
Series Name:Proceedings of SPIE
Issue or Number:571
Record Number:CaltechAUTHORS:20140429-131631334
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45313
Deposited By: SWORD User
Deposited On:30 Apr 2014 00:00
Last Modified:03 Oct 2019 06:29

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