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

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  1. J

    PF 65 ED eyepieces?

    Hi, from what I heard about the view being ok up to 30x only, I would strongly recommend to at least test whether you can get an easy to find point of best focus with a crisp image at 60x on a cool morning... or do a star test, best late night / very early morning before dawn. You want to...
  2. J

    PF 65 ED eyepieces?

    Hi Moditha, you can expect a noticeably wider apparent field of view than with the zoom at all magnifications. The Pentax zoom is fairly narrow from about 40 deg afov at the low mag end to a tad below 60 deg at the high mag. So if your current setup delivers a crisp but a bit narrow view at...
  3. J

    PF 65 ED eyepieces?

    Hi, first of all, welcome to BF! The Pentax XW series of eyepieces has a cult following in astro circles for its edge to edge sharpness, wide (but not super wide) 70 deg afov and good eye relief even in fast instruments (like the Pentax spotters they were designed for). I would expect the view...
  4. J

    PF 65 ED eyepieces?

    Hi, yes, the Pentax XW series is highly prized in the astro scene for nice moderate wide angle views with good eye relief in a small package (sorry, no, 68 degree afov does not qualify as extreme wide angle - that would be 82 degree and beyond). But they are also quite expensive... and the xw14...
  5. J

    PF 65 ED eyepieces?

    Hi, well, a 13mm EP should not have a focal length of 5mm... Here's a link to the whole Baader Hyperion line - including the 13mm and the 5mm versions. https://www.baader-planetarium.com/en/accessories/optical-accessories/eyepieces/hyperion.html That being said, I would not recommend the...
  6. J

    PF 65 ED eyepieces?

    Hi, yes, the focal length of the XW14 is 14mm... scope bodies and eyepieces both have a focal length - you get the magnification by dividing the one of the body by the one of the EP. The focal length is the distance behind some optical instrument where parallel beams (like sunlight - but be...
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