Jack Eastman, Chief Observer of the Denver Astronomical Society, is without a doubt one of the better known figures in amateur astronomy today. The picture at right shows Jack at one of the Denver Astronomical Society’s Public Open Houses, held at Chamberlin Observatory. He is proudly displaying his smallest home-built telescope: a Newtonian with a 1.5-inch mirror cut from the center of the primary mirror of the first Celestron Schmidt-Cassegrain (a telescope configuration that Jack helped to design.)
Also pictured (below) is Jack’s six-inch 1870’s Alvan Clark refractor.
Jack is an avid planetary, solar and double star observer. He brings a wealth of experience to every meeting and function that he attends. He has hobnobbed with many of the big names in astronomy. Yet Jack is eminently approachable and self-effacing. He finds it hard to believe that for many amateur astronomers, meeting him would really make their year.
Jack was the recipient of the Western Amateur Astronomers 2003 G. Bruce Blair Award.
At our general meetings, Jack is always coming up with detailed observing reports and sketches. At the bottom of this page, you will find links to some of these, as well as articles about Jack’s telescopes. Download these articles and interpret them as you see fit. These astronomical observations of Jack’s are for those who have been in amateur astronomy for a bit.
- Jack’s Telescopes; Part 1
- Jack Eastman’s Telescopes; Part 2
- Saturn in Binoculars, 1998, by Jack Eastman
- Further Binocular Observations, 1998, by Jack Eastman
- First Encounter with a Big Telescope
- Observations of October 5, 1996*
- Comet Hale-Bopp Observations*
- Double Stars in Orion*
- August 24, 1997 Observations of Jupiter’s Great Red Spot and White Ovals*
*These articles have unfortunately been misplaced. We are still looking for them.