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Holographically Made Zone Plates for use in X-Ray-Telescopes

Published online by Cambridge University Press:  14 August 2015

D. Rudolph  and
G. Schmahl
D. Rudolph
Affiliation:
Universitätssternwarte Göttingen, Göttingen, Germany
G. Schmahl
Affiliation:
Universitätssternwarte Göttingen, Göttingen, Germany

Extract

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As it is well known one can obtain images of the Sun in the soft X-ray region and far UV region by use of zone plates. The main advantage of such imaging systems is the good resolution over a large field. There are however some disadvantages by using zone plates as imaging systems. These disadvantages are the wavelength dependence of the focal length and the zero order halo which diminishes the contrast of the image.

Type
Part II: X-ray Astonomy
Information
Symposium - International Astronomical Union , Volume 41: New Technique in Space Astronomy , 1971 , pp. 205 - 206
Copyright
Copyright © Reidel 1971 

References

Bräuninger, H., Einighammer, H. J., Fink, H. H., and Mayer, U.: 1969, Mitt. Astron. Ges. 27, 200.Google Scholar
Feitzinger, J. V.: 1968, Bundesministerium für wissenschaftliche Forschung Forschungsbericht W 68-63.Google Scholar
Rudolph, D. and Schmahl, G.: 1970, Optik 30, 475.Google Scholar
Schmahl, G. and Rudolph, D.: 1969, Optik 29, 577.Google Scholar