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Old 13-12-2015, 01:02 PM
Eli21 (Dave)
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Skywatcher Black Diamond 127mm Maksutov

Anyone who has or used these, please let me know - thanks.
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Old 13-12-2015, 03:32 PM
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omegacrux (David)
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I had one great little scope good for moon and planets
The only reason for selling it was the small field of view

David
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Old 17-12-2015, 02:35 AM
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Don Pensack
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It is an excellent scope, optically.
But it has a narrow field of view (max of 1 degree), and a long focal length (~1540mm with the normal 1.25" rear end), so it requires a fairly stable mount.
The primary is undersized for the size of the corrector, so it is really more of a 120-121mm scope in terms of light grasp. Sky & Telescope noted this in their review over a decade ago.
As an overall general-use scope, I don't recommend it. But as a specialty scope for high-resolution viewing of, say, double stars, or tight star clusters, it is excellent.
Mine was used as high as 328X on a close opposition of Mars, and I drew a sketch that allowed me to identify about 50 named features on the planet so it really is a better scope than many small scopes.
A 5" SCT will have a shorter focal length, but due to the baffling it won't have a wider true field.
If you're looking for a widefield, low-power, scope, the 6" f/5 from Celestron/Sky-Watcher would be more to your liking.
This little Maksutov scope would work great on an iOptron ZEQ-25 mount, or a Vixen GP or a Celestron AVX or even a Celestron CG-4 with tracking motor added. Because of the long focal length, it does not work well on lighter mounts.
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