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Extra info for Building a Roll-Off Roof Observatory: A Complete Guide for Design and Construction

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2. Completed “Davis Memorial Observatory” with refractor at rest position ready for roof closure. (From the collection of John Hicks). 3. Don Trombino imaging the Sun with ample wall clearance behind him. With this much Instrumentation, it is essential to have a good working distance. (Courtesy of Jeff Pettitt). Tables have been created listing instrument type, focal ratio, telescope tube length, mount height, and floor area required. Actual measurements of your instrument on your pier of choice in all its various swing positions is actually required.

Courtesy of Bob Luffel). 28. ” (Courtesy of Bob Luffel) (See Color Plates). 29. “Ballauer Observatory” – illustrating higher warm room section, lower roll-off roof, and attached open storage area. (Courtesy of Jay Ballauer). 30. “Ballauer Observatory” – illustrating how roll-off roof tucks under the higher warm room roof above it. Note casters and the large air gap between roof and walls. (Courtesy of Jay Ballauer) (See Color Plates). When closed, this observatory measures only 10 ft × 10 ft, just fulfilling the maximum area size under building code exemption.

Requiring only about three evenings to construct, it could be built from 4-1/2 sheets of 1/4 in. 00. 42). 37. Paul Smith’s Clam shell Observatory closed showing slope on split roofs. (From the collection of John Hicks). 38. Paul Smith’s (1995) Clam Shell Observatory open showing 10 in. reflector. Note that the north roof half swings only vertical affording an excellent shelf for equipment cases, lenses etc. (From the collection of John Hicks). 39. The first model of the “Clapp Trapp” showing the numbered wall panels, with some wall faces swung down, and the roof in place.

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