The book is structured to lead a hobbyist through the same practices used for mirror-making, applying them to the more complex task of multi-surface lens fabrication.
Norman Remer’s book demystifies this complex process. Refractors require making and aligning multiple glass surfaces—typically four surfaces for a doublet lens. Remer breaks down the physics, math, and manual techniques into actionable steps that an amateur can achieve in a home workshop. Key Highlights of the Book:
What (e.g., 4-inch f/15) are you planning to build?
Given its status, the book is highly sought after. Here is a guide to finding your own copy:
: A front, double-convex lens made of low-dispersion glass (typically Crown BK7) that provides positive optical power. making a refractor telescope norman remer pdf 12 new
: Shaping the two elements of the doublet lens to exact spherical specifications.
: It includes specialized Excel spreadsheet programs on a CD-ROM to help builders design lenses corrected for color, coma, and spherical aberration.
Fabrication begins with purchasing clean, certified optical glass blanks (Crown and Flint) along with matching glass or tile grinding tools. You will need a series of silicon carbide abrasives, aluminum oxide powders, and optical pitch for polishing. refractor Oslo LT / Norman Remer book - Cloudy Nights
For many telescope builders, the true crown jewel of the book is . For individuals hunting down a digital copy or utilizing the spreadsheet tools, this specific section removes the mathematical intimidation of ray-tracing. The book is structured to lead a hobbyist
: Using optical tests to identify and fix errors in the lens figure.
A smooth mechanical focuser to hold your eyepieces. 4. Digital Copies and PDF Availability
Variant 1 — Beginner 60/700 Achromat
That said, here is a based on the actual content and reputation among amateur telescope makers (ATMs). Remer breaks down the physics, math, and manual
Remer’s work is not merely a collection of tips; it is a complete, 408-page masterclass. The author adopts the role of a coach, guiding the reader step-by-step through every single aspect of the project, from the fundamental characteristics of optical glass to the final, satisfying moment of mounting the finished lens.
While the original publisher, Willmann-Bell, was acquired by the American Astronomical Society, new and used copies of the first edition remain available through specialized retailers:
Trade-offs: