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I bought a few sets of eyepiece pairs for my Takahashi Twin View and later for my Denkmeier unit.
The matched pair of 20mm Erfles I got from Japan were in collimation, as were my 32mm Meade Plossls.
The 6mm and 10mm Superviews I got from Andrews were only slightly out of collimation.
But my pairs of 6.4mm, 15mm, and 12.4mm Meade Plossls and a pair 28mm eyepieces were badly out of collimation.
Regards,
Renato
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