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Old 03-05-2017, 09:50 AM
russellm
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russellm is offline
 
Join Date: Jul 2006
Location: Ararat Vic Australia
Posts: 8
Takahashi cn212 reduced to $4,100

add serial numberTAKAHASHI CN212 serial number 97034 with moonlight focuser Cassegrain-Newtonian Reflector $4,100.00

This very unique scope comes with both an classic Cassegrain secondary and a Newtonian. You can change the secondary in minutes to change the format to either a Cassegrain for visual or a fast Newtonian format for imaging. This scope really is one of a kind using precision engineered dowelled secondary units for perfect alignment in either Cassegrain or Newtonianconfigurations.

The optical principle of the CN-212 is simple yet clever. From a primary short focus parabolic mirror, pierced centrally, the different optical configurations are possible depending on the secondary mirror placed in the light cone. Here we have two telescopes in one, an f/12.4 Cassegrain as the basic configuration, with a hyperbolic secondary mirror for high resolution work, or when you require, by simply replacing the secondary mirror and coupled with a low profile 2" eyepiece adapter and associated field corrector, you transform your instrument into a brilliant wide field Newtonian with a focal ratio of f/3.9.

The Cassegrain format has an f ratio of 12.4. Due to the slower ratio, this is mainly used visually. We have upgraded the rear to a high quality Moonlite dual speed crayford focuser to eliminate any image shift and to fine tune your focusing.

See the ice in space equipment reviews page for a detailed review - http://www.iceinspace.com.au/41-561-0-0-1-0.html Thanks to James Edwards
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Last edited by russellm; 12-05-2017 at 10:20 AM. Reason: add pictures
 

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