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Old 03-10-2019, 10:35 PM
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Bobbyoutback
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Join Date: Oct 2009
Location: Broken Hill
Posts: 361
Quote:
Originally Posted by ngcles View Post
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.
Gee ' I would of thought less but trust your opinion more

What I greatly appreciated was you gave a figure , so much better then getting a sit on the fence nebulous reply from those robot type thinkers

Regards
Bobby
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