Thread: The 460mm f/0.89 Refractor
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Old 28-06-2015, 12:10 PM
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Atmos (Colin)
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Yep, there is a reason why billion dollar telescopes are being developed around the 30-40 metre mark as opposed to a 10m F/0.2.

A faster telescope is all well and good BUT aperture is what captures photons.
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