Quote:
Originally Posted by multiweb
I barlowed it x2, x3, used an AO on it as well.
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So, you turned your f/5 scope into an f/10 scope by inserting a Barlow? You could as well have changed from a 20mm to a 10mm eyepiece
Quote:
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The view at native F/5 is brighter than at F/10. The contrast is also much better at F/5.
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You mean the sky background looked more washed out? And the contrast was better at f/5 at the same magnification? Or at half the magnification?
We all know that views get dimmer when you plop in a Barlow lens, but that's because the magnification doubles (or triples, or whatever).
Try using an f/5 and an f/10 scope of same aperture (like what Richard was asking about) at the same magnification.
Cheers
Steffen.