1st Edition

Telescope Eyepieces Optical Theory and Design

By Sean G. Ryan Copyright 2026
222 Pages 23 Color & 22 B/W Illustrations
by CRC Press

222 Pages 23 Color & 22 B/W Illustrations
by CRC Press

222 Pages 23 Color & 22 B/W Illustrations
by CRC Press

Anyone who has looked through binoculars, a telescope or microscope has used an eyepiece. Telescope Eyepieces: Optical Theory and Design explores the wide range of eyepiece designs. It introduces optics theory progressively to build understanding of how lenses control light in an optical system, both generally and in eyepieces specifically, linking optics fundamentals, design evolution and the... Read more

Table of Equations

Glossary of Variables and Points

1. Introduction 

2. Optics Fundamentals              

3. A Single Lens Eyepiece and Aberrations          

4. Two-lens Eyepieces  

5. Multi-glass Eyepieces            

6. Beyond the Spherical Lens                   

Index

Biography

Sean G. Ryan is a professional astronomer with almost 50 years of experience as an amateur observer. He was appointed Professor of Astrophysics at the University of Hertfordshire in 2006, where he was Head and Dean of the School of Physics, Astronomy and Mathematics for ten years. He has published over 100 research papers on observational astronomy and has co-authored several textbooks, including Visual Astronomy with a Small Telescope.