With the purchase of the correct adapters for the celestron f6,3 reducer I attached it alltogether onto my ed80 Orion scope and rattled off some comparison photos from my backyard of the light towers 3 blocks away.
I purchased an asi 178mc cooled recently and am thinking the field of view is a little restrictive when I looked at the
field of view calculator (awesome little link).
So I purchased an sct to 2 inch adapter and an sct to m42 adaper as well from Sirius optics and put it all together
The end result was, with this camera a great result with NO vignetting and a wider field of view. I have posted a comparo below as the heavens have not been kind to post any sky pictures but good enough for the backyard pictures. (I can't speak for dslr's as they have a much greater field of view and most likely don't need any reducer)
Thoughts and comments are welcome please