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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: SNO-T "night" sight tube?
From: Tony Oz
Date: 2018 Nov 22, 11:31 -0800
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
