Quote:
Originally Posted by Paul Haese
Peter, you know which one I want, but cannot afford yet. 
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You really have got some excellent results, which are frankly better than many of the dedicated astro-ccd images out there.
As I said, the basics need to be covered, collimation, focus, focus, focus, mount alignment, tracking & guiding....and you've done all of that very well!
Telescopes, cameras, cars, hi-fi's are all very similar, in that the first 80% can be got without fancy engineering or undue cost. With some intelligent tweaks (eg $A500 Taka flattener), a skilled user can maybe squeeze another 10% .
Things tend to get a little exponential in engineering and cost after that.... and for many that last little bit of resolution or S/N is simply not perceptible, or desired given the often significant cost.