Imaging the sun in hard X-rays - Spatial and rotating modulation collimators

Details Imaging the sun in hard X-rays - Spatial and rotating modulation collimators Imaging the sun in hard X-rays - Spatial and rotating modulation collimators

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991spie.1549..155c&link_type=abstract

In: EUV, X-ray, and gamma-ray instrumentation for astronomy II; Proceedings of the Meeting, San Diego, CA, July 24-26, 1991 (A93

Astronomy and Astrophysics

Astronomy

Collimators, Image Reconstruction, Solar Flares, X Ray Imagery, X Ray Telescopes, Bremsstrahlung, Field Of View, Image Processing, Monte Carlo Method, Spatial Resolution

Scientific paper

Several 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.

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