Observed arrival · 2026-08-29
Telescope Making
A hands-on guide to grinding telescope mirrors, testing optics, and building the rest of a working instrument.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The index separates optical work from the rest of the build: readers can move from grinding, polishing, and figuring a mirror to testing it with a Ronchi setup, then continue into focusers, mirror cells, and tracking platforms. Its collection reaches back to 2002 and includes both beginner-facing instructions, such as printing a cheap Ronchi screen, and detailed project records involving a 12.5-inch primary and a Raspberry Pi 5 finder scope.
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue