The Airglow Observatory sits atop a ridge on Laurel Mountain Road. It is in a state of poor repair, and there is some dispute as to whether it is abandoned. There is a large dome here for instrumentation. It looks like it was used for astronomical obesrving or weather monitoring.
I drove onto the site to take some pictures. As I was unsure whether I should be there, I did not stay long or look around the back of the building. There are other pictures online which can be found through search. There was no signage that I noticed when I was there, except for what was on the building. There are some antennae and lights on the building, which appear fairly modern and in good repair. The paint on some of the lower windows appears newer.
The building was constructed by the University of Pittsburgh under a NSF grant, with construction beginning in 1965, according to a press release. The purpose of the building was to study the atmosphere of Earth and the other planets, as stated in the release. Airglow is a faint emission of light by a planetary atmosphere. In the case of Earth’s atmosphere, this optical phenomenon causes the night sky never to be completely dark, even after the effects of starlight and diffused sunlight from the far side are removed. This phenomenon originates with self-illuminated gases and has no relationship with Earth’s magnetism or sunspot activity, causing aurorae.
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