| THE
KLEVZOV-CASSEGRAIN TELESCOPE SYSTEM. First-class precision instruments
based on Klevzov's original advanced optical system design, for the advanced amateur
astronomer who desires high resolution and excellent light passing power in a
highly portable telescope. The Klevzov-Cassegrain non-aspherical system presents
a radical new form of catadioptric telescope that combines the compactness of
a Schmidt-Cassegrain with similar enviable high resolution image quality and contrast
of modern Maksutov designs. Klevsov's revolutionary catadioptric design employs
a sub-aperture meniscus correcting lens, combined with a Mangin mirror-lens secondary.
Their fast focal ratios, flat field and excellent correction of coma, spherical
aberration and astigmatism (14 micron star images at a distance of 10mm from the
optical axis!!) makes these superb instruments for astrophotography, as well as
for the observation of planets and deep-sky objects. |
