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Hey Greg,
Well, the RC's just need the flattner to be competitive performance wise, but additional benifits with the RC like the glass and manufacture used for the mirrors etc etc, just place the price too far out for most.
This CDK design has only been around a very short time, and thus the acceleration of sales and reported abilities.
One, as i mentioned in an earlier post, was its collimation, and ease of adjustments. This was paramount to me if i was to enjoy the investment.
An example (Painful too by the way) was 2 nights ago. I walked into my dark observatory and assumed i parked the scope the other way (Pointing east), so while walking, i banged my head hard against the front ring of the scope (Was pointing west). Jeepers it hurt, and i was sure i must have knocked the collimation out. A check yesterday verified it was out by a bees d%$%^, so again i spent 2 minutes re collimating it by adjusting 1 screw to centre the secondary back in the middle. Image is attached on the ease of adjustment. Didnt need to be done, but because its so easy to do, i became a fuss pot, and did it. Still got the bump on my forhead to remind me of the event.
Sales will only effect he 20" and below sizes, as i have only heard of one 40" bieng made in the U.S.A for a University, so sales should be OK on the larger RC scopes.
I have been enjoying my time visually at the moment, and havent spent much time imaging. Which is amazing, as i spent 90% of the time imaging before, now its reversed. If your ever in Melbourne, pop in and checkit out if your seriously looking at getting one. Thats what i did before i got one.
Just hanging out for the x 0.66 reducer, which will make my scope into a 20" f4.5 widefield Astrograph.
Theo
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