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The canvas floor. One corner is folded back to show how the floor is attached.

September 22, 1979. My trip to Mt. Graham with my trusty 1963 Mercury Comet. The location is at about  9,000 feet elevation. I wanted to setup in a nice dark sky site but the atmosphere did not cooperate. On this particular weekend an unusual amount of air pollution from California rolled in which caused an increase in light pollution.

 

At the May 1983 RTMC my portable observatory got an honorable mention. The following year Ernie William showed up with this version of a portable observatory. Notice that the material he used looks very similar to the material ACE Dome used years later.

At the 1986 RTMC Ernie brought his new version of a tent portable observatory. He had the top modified so that the top of the tent could be zipped open. I believe Ernie's innovations influenced subsequent commercial designs.

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