Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011xau5.confe..48s&link_type=abstract
"The Second Ferrara Workshop on "X-ray Astrophysics up to 511 keV", held in Ferrara (Italy), September 14 - 16, 2011, article #4
Astronomy and Astrophysics
Astrophysics
Scientific paper
High angular resolution is a primary requirement to imaging systems for X-ray astronomy. This is obtained along with an accurate profile of focusing mirrors: however, the imaging quality can be also degraded by the X-ray scattering off reflecting surfaces, to an amount increasing with the energy. Achieving high angular resolution then entails a detailed calculation of the Point Spread Function expected from the figuring errors and microroughness in order to establish unambiguous tolerances. In this work we present a self-consistent method to process grazing incidence mirror metrology data to retrieve the imaging quality at any energy from UV to hard X-rays, simultaneously accounting for both figuring errors and roughness.
Raimondi Luca
Spiga Daniele
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