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

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    Ageing of optics

    Is the scope an ATS80 or an ATS80 HD with low dispersion glass in the objective? There is quite a difference and HD versions will have HD lettering on the helical focusser. Today all ATS/STS scopes are HD but in 2008 and on the ATM/STM scopes around 2011 there were a total of eight versions...
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