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Barlow advice
I am looking for a 2x barlow for use on my WO 66 petzval scope - there is a vixen shorty from astrocorp for $65 - has anyne used one. The scope can be fussy about ep/barlows gaining focus - does anone know can I use shorty barlows. I could get either a 1.25 or 2" model
thanks
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