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  1. C

    PF 65 ED eyepieces?

    Following up on what both Alexis and John posted about the relationship of eye lens diameter, apparent field of view (AFOV), and impact upon eye relief (E.R.). Here's some quick info on the specs of the Pentax setup mentioned, and how it plays out for one individual in terms of viewing. I hope...
  2. C

    PF 65 ED eyepieces?

    You bring up some very good points, and mostly I agree with you - especially about the advances of zoom eyepiece quality from some companies, and most certainly about their overall convenience in the field. But... That improved quality definitely comes at price, and even at that price many...
  3. C

    PF 65 ED eyepieces?

    A lot of folks comment on the Pentax XW eyepieces being very good when paired with the Pentax scopes. But if you read some more recent reviews of astro eyepieces the Televue DeLite equals it, and in some situations has improved resolution. While the Televue DeLos has been rated by a number of...
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