Regarding the superviews. I have purched 2 of these eyepices and have found them most suited for F8 or longer scopes. Good images on planets and deep sky with a barlow on shorter newts. The only negative is a tendency to sharply focus dust particles on the feild lens as thier feild stops are very close to the feild lens. The ones purched were the 15mm and 20mm. doug mc.
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