Quote:
Originally Posted by toyos
With nearly 40% central obstruction, how does this scope compare to a top-quality 18" Newtonian with 20-25% central obstruction in terms of contrast, resolution, sharpness and overall clarity under moderately light-polluted sky?
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Visually, it might have a run for its money against a top quality 18" newtonian... That said, photographically, you'd be hard pressed to find an 18" newt to give as good resolution, an image circle and flat field of the same size without increasing the central obstruction to around the same size.. I think the CDK's are about as good as you can get when looking for an all round scope... they excel in imaging, however they do offer pleasing views through an eyepiece, something that other similar designs do not (usually) Its rather hard to find a good all rounder these days.. the CDK's have slid nicely into that void and filled it right up.