1. How Telescopes Work
Galileo and the telescope – Explaining Science
History of Science Society -- Committee on Education
Galileo's telescopes Serious errors and inconsistencies in the specifications of the optics and dimensions of has been found in the literature. Griffith Observatory and Adler planetarium replicas
A history of the telescope | Ars Technica
Refracting telescope - Wikipedia
Galileo and the telescope – Explaining Science
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Galileo's telescope - How it works
Galileoscope
How Does a Refracting Telescope Work?
Galileo's Refracting Telescope | Multiwavelength Astronomy
Making a Galilean Telescope
Galileo and the telescope – Explaining Science
What is Galileo's Telescope? - Universe Today
History of Science Society -- Committee on Education
How to build a DIY replica of Galileo's telescope
How good were the optics in Galileo's telescope compared to today's cheap telescopes? - Quora
Galileo and the telescope – Explaining Science
Refractive Telescopes
Refracting Telescopes - an overview | ScienceDirect Topics
Refractive Telescopes
NOVA | Galileo's Battle for the Heavens | Two Types of Telescopes | PBS
