Making A Refractor Telescope Norman Remer Pdf 12 New
Hand-polishing requires specific optical pitch (like Gugolz pitch) and polishing compounds (like Cerium Oxide). These can be found through lapidary supply shops or dedicated telescope-making vendors.
: A critical part of his methodology involves identifying and removing "wedge" (uneven thickness) early in the process, which ensures the final lens is perfectly aligned. Why an f/12 Focal Ratio?
: For those who want to skip the math, Chapter 12 provides seven specific "prescriptions" for doublet lenses ranging from 3 to 8 inches in aperture . Key Stages of Lens Fabrication
: If you need a basic introduction to refractor mechanics, the American Museum of Natural History provides a simple PDF guide on building a basic refracting telescope using simple materials. making a refractor telescope norman remer pdf 12 new
is widely considered the ultimate bible for Amateur Telescope Making (ATM) enthusiasts who want to cross the boundary from building reflectors to grinding their own doublet lenses. Originally published by Willmann-Bell, Inc. , this 391-to-408-page masterpiece acts as a masterclass coach. It safely guides builders through the highly sensitive process of shaping glass surfaces to sub-wavelength precision. The book famously includes built-in design programs, and its Chapter 12 stands out for providing 7 exact, pre-calculated lens prescriptions. This allows builders to dive straight into fabrication without needing a formal degree in optical engineering. Why the Norman Remer Guide is Essential
Unlike a mirror which has one optical surface, a doublet lens has four surfaces (R1, R2, R3, and R4) that must all be ground to precise, calculated curves.
If you cannot find Remer's text, classic alternatives include Amateur Telescope Making by Albert G. Ingalls and Standard Handbook for Telescope Making by Neale E. Howard. Why an f/12 Focal Ratio
A telescope is only as good as its focuser. For a high-f-ratio refractor, a 2-inch Crayford or Rack-and-Pinion focuser is recommended. Ensure the drawtube is long enough to reach focus with various eyepieces but doesn't vignette the light path. Finding the PDF and Resources
: The text is supported by numerous black-and-white photos, tables, and diagrams to clarify complex optical testing procedures.
Late one Tuesday, Norman finally tightened the last bolt on the mounting. He hauled the titan into the garden. As the cooling night air settled, he aimed the 12-inch giant toward [4, 6]. is widely considered the ultimate bible for Amateur
Unlocking Chapter 12: Predefined Prescriptions and the f/12 Focal Ratio
The heart of your telescope is the objective lens. Most DIY builders choose an (usually a Crown and Flint glass combination).
Making a Refractor Telescope: How to Design, Grind, Polish, Test, Correct and Mount a Doublet Lens
