Quote:
Originally Posted by clive milne
If refractors are a panacea, why aren't they commissioned in a contemporary professional context in apertures exceeding 4 inches?
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I think the simple reason for that is cost and size. An excellent 6 inch APO refractor costs around USD$12,000. An 8 inch one jumps to USD$30,000.
Plus an 8 inch refractor is getting to the permanent observatory type size and weight.
A good 8 inch reflector is a fraction of that.
Greg.