JOURNAL ARTICLE

A Giant 3D-Printed Purple Spyglass: Here’s a collapsing telescope that truly travels well.

  • Published In: Sky & Telescope, 2026, v. 151, n. 5. P. 74 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Kissner, Jonathan 3 of 3

Abstract

The article focuses on amateur telescope builder Jasonn Pellegrini’s creation of a collapsible, 3D-printed 6-inch f/9 refractor telescope inspired by historical spyglasses. Designed with nested, threaded tube sections and printed primarily using ASA filament for durability and heat resistance, the telescope is lightweight, portable, and capable of holding heavy components like a MoonLite focuser. Pellegrini’s design incorporates practical features such as a debossed dust cap with a built-in Bahtinov mask for focusing and allows full collimation of the objective lens. The project demonstrates how accessible technologies like 3D printing can enable enthusiasts to build custom, affordable astronomical equipment. [Extracted from the article]

Additional Information

  • Source:Sky & Telescope. 2026/05, Vol. 151, Issue 5, p74
  • Document Type:Article
  • Subject Area:Science
  • Publication Date:2026
  • ISSN:0037-6604
  • Accession Number:192324635
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