Bart , I have an 8" I take with me on my travels and at both Hyperstar focus and Cassegrain focus the stars are nice tight pin points from centre to edge on my QHY10 at least, visually as well with TV eyepieces. Mirror shift is not a problem in the 8". i have fitted a feathertouch micro focus for hyperstar imaging as getting focus at F2 is a challenge but quite doable now. cool down is not a concern as you simple remove the secondary and with the bottom vents allow the natural air flow. i would think some one will come out with fan forced aftermarket units soon.
The much and long awaited focal reducer has not turned up from Celestron yet I think, but optic has one they say works???
I have had SC from both companies in the past and this is by far the best Sc I have had to date.
I would love to post a sample but my brand new laptop has died 2 days after transferring all my data over and is in at the doctors getting repaired. I haven't lost the data just have not got access to it for about a week. Go to the Yahoo groups for pictures.
Would i get a 14" --you betcha if I was not building an 18" Newtonian for a lot less
(in OZ that is--say no more on that one)
Mark