Part of the Patrick Moore's Practical Astronomy Series book series (PATRICKMOORE)
A Winch System for Opening and Closing the Roof
The following photo illustrates a well-designed winch system for removal and closure of the roll-off roof, placed on the observatory floor against the north wall (Fig. 12.1).
KeywordsFinal Satisfaction Steel Cable North Wall Bottom Chord Camera Obscura
© Springer Science+Business Media, LLC 2009