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

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    Introduction and question to the aperture of scopes

    I think it would need to be further into the scope than how Fernando had it though. It would probably vignette more than increase depth of field where it was in the photo. I'd try the lens cap way first, the tiny loss of resolution will be undetectable in the photos, you get the benefit of...
  2. P

    Introduction and question to the aperture of scopes

    Welcome Jörg. I keep one a diaphragm from an old lens on the end of the focus tube. I have it set fairly wide open, just use it to stop stray light more than anything. I use another diagram on the 2" camera to scope adapter. If I am using a barlow or teleconverter then I will keep it set to...
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