Imaging X-ray stars with a hologram telescope

Details Imaging X-ray stars with a hologram telescope Imaging X-ray stars with a hologram telescope

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977stin...7813979e&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Holography, Imaging Techniques, Stars, Stellar Radiation, Telescopes, X Ray Astronomy, Cosmic Rays, Fresnel Integrals, Microdensitometers, X Ray Sources

Scientific paper

The theoretical resolving limit of the Mertz and Young process for imaging cosmic X-ray sources by means of the Fresnel transformation is experimentally verified. There are difficulties in the reconstruction of the star images from the shadow hologram when numerous zone patterns are superimposed. The loss of information could be minimized in this case by using zone plates having zones of reduced width. The advantage of the process in comparison with a pinhole camera of equal resolution is a significantly less exposure time. In this experiment a factor of 30 was yielded. This is demonstrated with the use of microdensiome tracings. The holograms were prepared by photographic superposition.

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