6" F/12.5 Maksutov-Cassegrain telescope with focusing via a moving primary mirror.
The mirror surfaces have very high reflectivity (95% +) and the telescope benefits from multi-coated meniscus lens; internal baffle rings and a 2" threaded opening to accept any SCT accessory fitted to the rear cell. The tube is painted off-white for ease of operation in the dark.
Maksutov-Cassegrains have better contrast than Schmidt-Cassegrain telescopes; sometimes equalling the performance of refractors of similar aperture; because of the smaller secondary mirror obstruction in comparison to Schmidt-Cassegrain telescopes. These telescopes are excellent for both visual and photographic use.
Specifications:
Description : 152mm (6-inch) Maksutov Cassegrain
Aperture : 152mm (6-inch)
Focal length (f) : 1900mm (75-inch); f/12.5
Angular Resolution : 0.753 arcsec
Maximum Useful Magnification : 299X
Limiting Magnitude : 14.8
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It is a while since we spoke (so to speak). I thought I ought to let you know I finally got around to putting the 6" through its paces. I am more than satisfied with the performance of the lens, even though the conditions at the times I was viewing were not ideal.
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