Quote:
Originally Posted by Merlin66
I’ve used Canon lenses on various CCD camera, with suitable spacers.
From memory no issues.
What’s the real problem you face?
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This enquiry Ken is as much academic driven by curiosity but with a practical aspect as well. It can be informative at times to follow theoretical queries purely for just wanting to know the answer. In my experience the knowledge gained will help us down the track somewhere
@JA - My calculated adapter spacing for my set up is 11.5mm but I find that I need to reduce the adapter spacing to about 10.5mm to get a reasonably flat field. This is taking into account the sensor set back in the ASI6200 (12.5mm) and the ZWO 2” filter wheel (20.0mm).
There is no problem as such in that I can adjust the adapter spacing to get the result that I want. I do how ever get curious when the theoretical values differ from the results in practice and I start looking for answers.