Image defects from surface and alignment errors in grazing incidence telescopes.

Details Image defects from surface and alignment errors in grazing incidence telescopes. Image defects from surface and alignment errors in grazing incidence telescopes.

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990opten..29.1296s&link_type=abstract

Opt. Eng., Vol. 29, No. 10, p. 1296 - 1305

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X-Ray Telescopes: Alignment

Scientific paper

The rigid body motions and low frequency surface errors of grazing incidence Wolter telescopes are studied. With the help of the Legendre-Fourier polynomials and the geometry of grazing incidence telescopes, exact and approximated first order equations are derived for the components of the ray intercepts at the image plane. These equations are then used to calculate the sensitivities of Wolter type I and II telescopes for the rigid body motions and surface deformations. This theory also provides a tool to predict how rigid body motions and surface errors of the mirrors compensate each other.

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