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

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  1. beacon hill

    Spotting scope aperture and heat waves. Seeing?

    In really bad seeing conditions, stopping my 12" Dob with a aperture mask gives much steadier views of the Moon and Planets. Also despite the smaller aperture can resolve double stars more clearly. Again, this is only on nights of really bad seeing. On steady nights aperture always wins. Have...
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