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Thanks guys, I'm a bit the wiser now. Still trying to assimilate some of that though.
So visually - let's use f/10 sct's as examples - if we have a 8" and a 16" side by side and focussed on the same celestial object, using different eyepieces to produce the same magnification in each scope, is the image going to be brighter in the larger scope than the 8", though the image is the same size in appearance (assuming the viewer has a healthy pupil dilation)?
I hope that makes some sense...?
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