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Old January 5th 06, 07:36 PM posted to sci.astro.amateur
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Default New Meade models

The interesting part of this new lineup is the "new" ahem Rittchey
Critien ahem again scopes. Let me repeat, a RC scope has 2 mirrors
both hyperbolic and no corrector plate(s). The RCX has a corrector
plate and only mild refiguring from the classical SCT design point,
much more like the coma corrected SCT from Rutten and vanVenrooij than
a real RC design.

The original RCXs remain and come with high quality mounts at F/8 and
are focused by moving the secondary, while the new ones revert back to
the F/10 of standard SCTs and are focused by moving the primary
(course) and by a drawtube focuser (zeroshift). This allows the RCX
optical design to utilize the volume production parts of the SCT line
and are priced at only a small adder to the SCT price structure.

I suspect this means that Meade will migrate to RCX optics over SCT
optics over the next year or so. I wonder what Celestron will do to
counter this move....