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 Near focus
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The near focus is simply the closest distance you can focus a telescope. It’s good to know when using the scope for terrestrial visual or photographic purposes.

Different types of telescopes will have greatly differing near focus capabilities. In general, catadioptric designs, like Maksutovs (MAKs) and Schmidt-Cassegrain telescopes (SCTs), are superior, with small near focus distances. Refractors and Newtonian reflectors will have much larger near focus distances and may not focus closer than several hundred feet (50 to 100 meters).

Most of Celestron's iconic SCTs can focus as close as 20 feet (6 meters). Older models of the C-90 MAK can focus as close as 6 feet (2 meters).


Article Details
Article ID: 1651
Created On: Feb 21 2005 09:49 AM

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An award-winning legacy brand for over 50 years, Celestron has grown to become the world's leading telescope maker, and enjoys brand-name recognition among serious amateur astronomers for superior optics, outstanding design, and innovative technology. Celestron also develops a wide range of exciting products and technologies that enhance the science, outdoor and educational markets. At Celestron, we strive to inspire a sense of wonder, knowledge and fun in our customers and throughout our company.

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