hi Peter,
I own a CPC925 and am very happy with its performance. This is the second C925 that I have owned (first one was arranged equatorially on a Losmandy G8 mount) and it is a great telescope and the ease of alignment makes it a dream to use ('two-star auto' is the way to go: just point the scope manually at a known star, engage the clutches and press enter. The scope then runs to a second star that it has selected and you centre it and you are in business!). The only thing that disappointed me when I bought the CPC925 was the sheer weight of it! Maybe it is really a 1100 mount fitted with appropriate spacers so that a 925 tube will fit between the forks? Whatever, it is heavy!
My advice would be to try to lift one before you buy. I can only imagine how heavy the CPC1100 would be.
Bob's Knobs didn't work out in the CPC925 due to the rim of the (head of the) knobs being too close to the inside of the rim of the (back of) the secondary mirror holder. Instead, I used 3mm stainless steel, Allen-headed, cap-head screws for collimation adjustment. Normal Bob's Knobs are Imperial sizes but not the CPC925.
Doug
http://www.iceinspace.com.au/forum/....es/happy19.gif
NexStar C8
CPC925
home-made 381 mm Obsession-style Dobsonian