After the successful introduction of the CDK 20" Astrograph from PlaneWave for few years ago, the CDK 12.5" is now available in a smaller and even more affordable aperture. The CDK 12.5" is an Astrograph in the price-range of many amateur-astronomers.
The abbreviation CDK stands for the optical system of the PlaneWave astrographs - a Dall Kirkham Cassegrain with a optical correction unit. The result is the CDK 12.5" which is free from off-axis coma and off-axis astigmatism, yielding a perfectly flat field all the way out to the edge of a 52mm image circle. More about the Optical Design (CDK).
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