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Obviously 0 Dec is 90 degrees from the Southern Celestial Pole, and the
scope mount[saddle] is perpendicular to it's Right Ascension axis, so if the mount is roughly aligned with the SCP when you put your scope in a
upright position it will be near enough 0 Dec for your purposes. You can
swing the scope in an East/West direction until you find a usable star
fairly close to 0 Dec.
raymo
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