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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

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  1. J

    Upgrade a Pentax 65 scope?

    Hi, you can do a star test at lower magnification too... it will not be as sensitive as with higher magnification but strong aberrations can still be seen. And the aberrations need to be quite strong if a spotter is not sharp beyond 40x. Joachim
  2. J

    Upgrade a Pentax 65 scope?

    Hi, yes, a star test of the body in question is recommended before getting higher mag eyepieces... Joachim
  3. J

    Upgrade a Pentax 65 scope?

    Hi, taking off the glasses is of course possible, if your prescription does not contain a big amount of cyl. (which means your eyes suffer from astigmatism). But it's a bit of a hassle... so maybe get other EPs. The Baader Morpheus series is well regarded for use with glasses and still...
  4. J

    Upgrade a Pentax 65 scope?

    Hi, first of all, welcome to birdforum! Since the Pentax can take 1.25" astro EPs you do not have to use the Pentax XW series. They are good but also not cheap and they seem to be designed for use with glasses - not super wide and goot eye relief. If you don't need a lot of eye relief due to...
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