R. Hudec Astronomical Institute (Czech Republic) M. Hromcik Czech Technical Univ. (Czech Republic) M. Elvis Harvard-Smithsonian Ctr. for Astrophysics (United States) O. Gedeon Institute of Chemical Technology (Czech Republic)
There is a growing need for multiply nested large area X-ray mirrors with very fine angular resolution in future X-ray
astrophysics experiments. Despite of promising results of several exploited technologies, it is not demonstrated yet that
these technologies will provide the required angular resolutions of order of few arcsec. The alternative approach
described in this paper is the method of active X-ray optics. In addition, active approaches based on computer control
may be applied directly during manufacturing of advanced X-ray optics elements. We propose these methods as an
alternative for the IXO project recently under study by ESA/NASA/JAXA.