Galileo and His Telescope, Pt. 3- - YouTube
astronomical optics, part 4: optical aberrations
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Chromatic aberration
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astronomical optics, part 4: optical aberrations
What Is Chromatic Aberration And How to Fix It!
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Astronomy 104: Lecture 7 (Slide 8)
Optical aberrations: how to fix errors in your telescope | BBC Sky at Night Magazine
astronomical optics, part 4: optical aberrations
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Optical aberrations: how to fix errors in your telescope | BBC Sky at Night Magazine
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A Practical Guide to Lens Aberrations and the Lonely Speck Aberration Test – Lonely Speck
Optical aberration - Wikipedia
What exactly is a chromatic aberration in a telescope eyepiece? - Quora
