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Spot Observatory
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Solar System
The observatory  building is 15 by  23 feet, with two piers.  The rails are 32 feet long, permitting the roof to be rolled approximately 8 feet from the building. The walls were set at 7 feet, and roof pitch at 5 in 12, permitting a standard door, plenty of headroom  and good wind protection.  The roof  is motorized.  For details of the expansion of this building in the spring of 2005, and for a few photos of my first observatory built in 1977, click HERE.
The observatory with sculpture by Nashville artist Rusty Wolfe.
The roof mechanism.  An old off-road vehicle reversible winch powers the roll-off mechanism.  Several pulleys with a practice bomb weight act as a tensioning device for the cable loop.