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The baffles in refractors don't stop down the scopes, except in the case of very low quality finders, and department store scopes that are little more than toys. My 102mm has two baffles, and the one near the middle of the tube is about 65mm diam. The light cone is down to that size by the time it reaches the baffle. The same goes for my 80mm, where the mid tube baffle
is about 45-50mm diam.
raymo
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