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Old 15-12-2010, 01:56 PM
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Stu Ward
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Join Date: Mar 2010
Location: wollongong
Posts: 523
The smaller dobs (8 ") are 1200mm Focal Length so the tube is around 1.3m long in total.
The base pivots at around ( guessing ) half its length. Therefore depending on where the object is situated in the sky determines at what height the eyepiece is.
If the object is near the horizon, then the average male would be on his knees to observere. At the Zenith then you are standing up with slightly bent knees.
Most comfortable observing is done sitting on either an adjustable astronomy chair or the famous Aldi Ironing chair.

Hope this goes some way to helping.

Stu
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