See evil, hear evil

Phil Pressel

doi:10.1117/12.2065768

5 December 2014 See evil, hear evil

Phil Pressel

Proceedings Volume 9197, An Optical Believe It or Not: Key Lessons Learned III; 91970F (2014) https://doi.org/10.1117/12.2065768
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

The purpose of this project was to design a “telescope” whose mirrors and support structures were all made of aluminum in order for it to remain in focus for all environmental temperatures. The telescope was mounted on a gimbal structure that was an elevation over azimuth assembly. The purpose of the telescope was to track in all directions in order to detect “enemy” activities such as visual or sound detection at the site of the telescope. The final assembly was eventually purchased by the Secession Activists of Quebec to scan all around for non-French speaking dissidents seeking to spy on them. It was also shipped to South Korea to detect activities by North Korea and shipped to Northern Ireland to spy on the British and finally it also was sent to a high altitude location in Israel. The peculiar thing about the one in Israel was that similar to reading and writing Hebrew from right to left, the telescope was only allowed to scan from right to left. Two unique mechanical designs involved in this telescope are discussed here. The first one is the design of a stop at each end of the azimuth travel that was greater than 360 degrees, and the second was the design of a gearing system that drove both elevation and azimuth assemblies with no backlash

Citation Download Citation

Phil Pressel "See evil, hear evil", Proc. SPIE 9197, An Optical Believe It or Not: Key Lessons Learned III, 91970F (5 December 2014); https://doi.org/10.1117/12.2065768

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