Quote:
Originally Posted by alpal
Maybe at f2.2 you wouldn't notice the disturbed air in the light path?
Really - you need to have the camera attached to the rear as in a classical Cassegrain or RC.
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Atik sell a range of cylindrical ccd with fans for Hyperstar use, so maybe they "solved" the turbulence issue or maybe it isn't an issue at that focal length. There are a lot of people imaging with Hyperstar, it's pretty popular over the big pond.
And with the evolution of mirrorless DSLR, the body is shrinking all the time, and some models already barely cause any obstruction to the light path. I'd say this is a product looking forward...