Holenstein's Holey Lens
Bart Fried will reprise a presentation he will give on December 3rd in La Chaux-de-Fonds, Switzerland at the Workshop: Observatories and Chronometry: Time, Science and Instruments (18th-20th Century). It's the story of how a lens found sitting in a closet in Philadelphia opened up a rabbit hole of intrigue leading to Bart's deeper understanding of the origin of Universal Coordinated Time, observatories seemingly drifting in position and the search to design the world's most accurate astrometric telescope. The story starts in the 1850's in England and ends with the development of the Cesium Atomic Clock and radio telescopes studying background quasars.
Bio:
DVAA life member Bart Fried joined the club in 1983, occasionally holding the job of Nominating Chair. He started the DVAA's list-serve in 1999 and has been it's List Janitor since then. Now semi-retired from business, he is currently Executive Vice President of the Amateur Astronomers Association, Inc; Board Director, Custer Institute & Observatory; Founder and Past President, Antique Telescope Society; and a Member of Astronomical Society of Long Island, Amateur Observers Society of NY and Westchester Amateur Astronomers, Inc.
Sic itur ad astra!