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

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  1. B

    Good viewing distance

    Hi mooreorless, That is a lovely photo taken on a good day. Regards, B.
  2. B

    Good viewing distance

    Hi Etudiant, I think there were reports in ATM and in JBAA amongst others. But Horace may have started making them about 1930? I haven't looked for these reports. The main problem is making the ray tube optics and extremely careful baffling. This allows their use in daylight. Horace also...
  3. B

    Good viewing distance

    Hi Giorgio, Have a look at 'Horace Dall pocket telescope'. The 6 inch aperture would probably outperform any normal spotting scope for distance viewing. He made dozens from 2.5 inch to 6 inch (60mm to 150mm aperture). The trouble is one would have to make it oneself or get the top optics...
  4. B

    Good viewing distance

    Piskeddu, An astronomical telescope such as a Skywatcher 120 ED would be a much better choice at that distance. 100x plus magnification. Good heavy tripod. AZ4? Mornings or late afternoon with the sun behind you if possible. Cloudy conditions may be better. It was around 35C yesterday, maybe 37C...
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