Thread: Televue 55mm Plossl
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Old 01-03-2021, 10:26 PM
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OneCosmos (Chris)
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Televue 55mm Plossl
Prompted by one of these advertised. Has anyone used it with a fairly fast mirror and noticed any really obvious problem with the resulting extremely large exit pupil produced?

I’d use it with the 28” f/3.8 SDM
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