Table 1. Optical parameters of the Wolter mirror.

Source–focus (image–object) distance	13.8 m
Numerical aperture for SXM / VLM	0.025 rad / 0.15 rad
Illuminated sector of aperture for SXM / VLM	18° / <360°
Obscuration ratio for VLM	0.68
Grazing angle (ellipsoidal surface)	22.1 mrad
Grazing angle (hyperboloidal surface)	42.5 mrad