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

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  1. Steve C

    Collimation

    You are really playing dominant eye vs non dominant eye. FOcus on a star, or a power line and move your eyes away from the eye piece keeping the object centered in the EP. If the star or the power line splits in two, you may have a problem. Likely not a problem with your EL ;)
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