Fresnel Zone Plate Telescopes as high resolution imaging devices

Details Fresnel Zone Plate Telescopes as high resolution imaging devices Fresnel Zone Plate Telescopes as high resolution imaging devices

2009-12-21

arxiv.org/abs/0912.4127v2

Astronomy and Astrophysics

Astrophysics

Instrumentation and Methods for Astrophysics

IEEE style, 4 pages with 7 figures, Conference proceedings of '1st International Conference of Space Technology (ICST-2009)' h

Scientific paper

Combination of Fresnel Zone Plates (FZP) can make excellent telescopes for imaging in X-rays. We present the results of our experiments with such telescopes with an X-ray source kept at a distance of 45 feet. We compare the patterns obtained from experiments with those obtained by our Monte-Carlo simulations. In simulations, we allow the sources to be at finite distances (diverging beam) as well as at infinite distances (parallel beam) and show that the resolution is worsened when the source is nearby. We also present simulated results for the observation of the galactic center and show that the sources may be reconstructed with accuracy. We compare the performance of such a telescope with other X-ray imaging devices used in space-astronomy. The Zone Plate based instrument has been sent for the first time in a recently launched KORONAS-FOTON satellite.

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