Building an achromat based on Remer's guide follows a distinct, chronological sequence: 1. Material Selection
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. making a refractor telescope norman remer pdf 12 new
Drawing from Norman Remer's methodology, the construction of a refractor can be broken down into these fundamental stages: Building an achromat based on Remer's guide follows
❌ – physical copies are rare and expensive ($100–200 used). ❌ Outdated supplier list – many surplus lens sources are gone. ❌ No digital edition – so any PDF is a bootleg scan (often poor quality). ❌ Assumes advanced machining skills – not for the casual hobbyist. ❌ Heavy focus on 60–100mm objectives – larger sizes get less detail. ❌ Outdated supplier list – many surplus lens
Remer teaches amateurs how to perform critical optical diagnostics right from their workshops. This includes the classic , Ronchi screens, and interference testing using low-pressure sodium light sources to look for precise Newton's rings. 5. Cell Construction and Alignment
: A high-index, high-dispersion glass placed behind the crown to correct the dispersion and bring two primary wavelengths (usually red and blue) to the exact same focal point.
Variant 9 — Educational Classroom Build