Quote:
Originally Posted by clive milne
If equatorial mounts were sold for free then nothing would beat a Newtonian dollar for dollar. Being that they are not, the equation slews more towards the RC and corrected DK designs.
If narrow band imaging is the intent then the fastest focal ratio wins.
Refractors are unchallenged up to 4" of aperture, but pretty much untennable (from a cost/performance basis) beyond a 6" objective.
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Perhaps then this one might be quite close to being 'ideal', at least in terms of value for money?
http://www.bintel.com.au/Telescopes/...oductview.aspx