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

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  1. J

    Pentax PF80ED

    Hi, yes the original zoom EP for the 823 seems to have a rubber eyecup. If you can test the Pentax and find it to work well, by all means go for that. Joachim
  2. J

    Pentax PF80ED

    Hi, have not compared and only seen a Pentax once and no 823 yet. If you can compare or at least test them, by all means do. Assuming they are both optically equal, the Pentax is a more rational buy. While the Pentax zoom EPs are not quite as legendary as their XW fixed series, they're ok. But...
  3. J

    Pentax PF80ED

    Hi, congratulation on your new scope. Round and looking the same inside and outside of focus is a good start. Remember that the interesting part is just off the focus point - further out the disc gets very uniform regardless of quality. Ideally a 6mm or shorter EP is used for an f6 instrument...
  4. J

    Pentax PF80ED

    Hi, the tripod and head seem fine to me (I have a 500AH too and some similar Velbon legs). Please do a star test when the scope arrives and let us know the results. Joachim
  5. J

    Pentax PF80ED

    Hi, I use an old TSN-3 and SDLv2 zoom for birding and it's almost exclusively used at its maximum of 52x as it's quite sharp and has a nice wide afov there. With a cable tie sight and some practice I am on target very easily, so no zooming out to find and then back in needed. A lot of birders...
  6. J

    Pentax PF80ED

    Hi, the Pentax spotters certainly can't take 2" EPs. The Pano 22 is dual barrel with the 1.25" one protruding below the 2" one. If it comes to focus in the Pentax I don't know. The Nagler 9mm is known to work and should be great with a good example of the Pentax - see...
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