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Hemi,
A Rumak Maksutov has a secondary that is separate from the corrector plate and has its own collimation screws. If the secondary is a silvered spot on tbe corrector it is not a Rumak but a Gregorian Maksutov, just like the Skywatcher maks, and the secondary is not individually collimateable.
The advantage the Rumak has over the Gregorian is the separate secondary offers the scope maker great flexibility in the design parameters and correction of the primary too.
Last edited by mental4astro; 02-10-2020 at 01:35 AM.
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