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    Re: SNO-T "night" sight tube?
    From: Tony Oz
    Date: 2018 Nov 22, 11:31 -0800

    Dear Brad,

    I  whether there should be any AR-coating because my newly-bought Galilean scope has a very bright spot/blot moving all over the field of view when I watch the Moon for example. This blot is there definitely because of internal reflexions within the lenses. It is so intensive that I guess it will make a lunar-distance sight more difficult. I asked amateur-astronomers about AR-coating and they confirm the image contrast is better if the coating is there.

    Warm regards,

    Tony

    60°N 30°E

       
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