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150mm Verse 152mm refractor
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03-10-2019, 09:31 PM
ngcles
The Observologist
Join Date: Dec 2006
Location: Billimari, NSW Central West
Posts: 1,664
Hi Bobby,
I'd think about 15% larger by surface area of the lens or mirror, so approximately therefore, about 165mm aperture before there is a genuine, apparent difference.
Best,
L.
ngcles
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