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Proceedings Paper

Bragg telescopes in lobster-eye configuration
Author(s): Giovanni Pareschi; Filippo Frontera; G. Pasqualini; Andrea Stevoli
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Paper Abstract

In this paper will be investigated the possibility to exploit the Bragg diffraction from mosaic crystals as a reflection technique for the realization of lobster-eye telescopes for hard x-rays. In particular for our study we will assume the particular lobster-eye configuration also known as Schmidt imager. This geometry is particularly interesting not only why it can allow a 1D focusing over large fields of view but also because it is relatively easy to be realized, being based on flat reflectors. Until now lobster-eye telescopes have been mostly studied for applications in the classical x-ray band, making use of total external reflection at grazing angles mirrors. However, due to the much larger reflection angles typical of Bragg diffraction it is possible to extend the use of the Schmidt geometry also to the hard x-ray energy band. Here, in addition to a general description of the behavior of Schmidt telescopes based on the Bragg diffraction technique, we will report also some theoretical evaluations about the performances achievable with these devices.

Paper Details

Date Published: 10 November 1998
PDF: 8 pages
Proc. SPIE 3445, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX, (10 November 1998); doi: 10.1117/12.330278
Show Author Affiliations
Giovanni Pareschi, Osservatorio Astronomico di Brera (Italy) and Danish Space Research Institute (Italy)
Filippo Frontera, Univ. di Ferrara (Italy) and CNR Istituto di Studio e Tecnologie sulle Radiazioni Extrater (Italy)
G. Pasqualini, Univ. di Ferrara (Italy)
Andrea Stevoli, Univ. di Ferrara (Italy)

Published in SPIE Proceedings Vol. 3445:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy IX
Oswald H. W. Siegmund; Mark A. Gummin, Editor(s)

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