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Imaging the sun in hard X-rays - Spatial and rotating modulation collimatorsSeveral approaches to imaging hard X-rays emitted from solar flares have been proposed or are planned for the nineties including the spatial modulation collimator (SMC) and the rotating modulation collimator (RMC). A survey of current solar flare theoretical literature indicates the desirability of spatial resolutions down to 1 arcsecond, field of views greater than the full solar disk (i.e., 32 arcminutes), and temporal resolutions down to 1 second. Although the sun typically provides relatively high flux levels, the requirement for 1 second temporal resolution raises the question as to the viability of Fourier telescopes subject to the aforementioned constraints. A basic photon counting, Monte Carlo 'end-to-end' model telescope was employed using the Astronomical Image Processing System (AIPS) for image reconstruction. The resulting solar flare hard X-ray images compared against typical observations indicated that both telescopes show promise for the future.
Document ID
19930050389
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Campbell, Jonathan W.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Davis, John M.
(NASA Marshall Space Flight Center Huntsville, AL, United States)
Emslie, A. G.
(Alabama Univ. Huntsville, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1991
Publication Information
Publication: In: EUV, X-ray, and gamma-ray instrumentation for astronomy II; Proceedings of the Meeting, San Diego, CA, July 24-26, 1991 (A93-34376 13-35)
Publisher: Society of Photo-Optical Instrumentation Engineers
Subject Category
Astronomy
Accession Number
93A34386
Distribution Limits
Public
Copyright
Other

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