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Why not use Achro for Astrophotography?
It is seeming everybody is saying mono cameras are best for DSO and planets work.
If this is case would be best to get large aperture achro instead of many dollars on triplet APO like Takahasi and so on?
If imaging is through filter one colour at a time, why not just use achro scope and spend more money on filters and CCD?
Is there other reason if not using visual?
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