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Is the focal reducing lens of the Lumicion Cassegrain Easy Guider compatible with f/6.3 Schmidt-Cassegrains?

April 26, 2017cassegrain compatible easy focal guider Lens reducing

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Is the focal reducing lens of the Lumicion Cassegrain Easy Guider compatible with f/6.3 Schmidt-Cassegrains?

1 Answer

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10 Posted

Not perfectly, since the correction factor of the lens, while excellent for use with f/10 Schmidt-Cassegrains, is not enough to prevent aberrations when used at f/6.3 to produce an f/4 focal ratio.