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

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  1. B

    HDF 40831 vs 40810 question (and other specs)

    I agree. If you're only having one eyepiece then get the SDL3. I have SDL2 and the 17x, 23x and 30x eyepieces. I use the SDL most but the 17x gets a lot of use too. It's so wide and bright. The 23x doesn't get much use and the 30 even less.
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