If you enjoyed “The life and times of Al Nagler” that appeared in the April 2013 issue of
Astronomy, I think you’ll like the first story I wrote about Nagler and Tele Vue Optics — the company he founded. That article, “The eyepiece that changed observing,” focuses more on the technological contributions of the man whose greatest invention revolutionized amateur astronomy.
Astronomy magazine subscribers can read the downloadable article for free. Just make sure you're registered with the website.