Optical aberrations: how to fix errors in your telescope | BBC Sky at Night Magazine
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Chromatic aberration
Chromatic Aberration
astronomical optics, part 4: optical aberrations
Telescope Types
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vik dhillon: phy217 - refractors
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Aberration | by Brian Koberlein
Galileo and His Telescope, Pt. 3- - YouTube
Optical aberration - Wikipedia
Chromatic aberration (video) | Khan Academy
vik dhillon: phy217 - refractors
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Telescope Types
![Apparent Disk of Venus with Chromatic Aberration [Stellar Neophyte Astronomy Blog]](https://2.bp.blogspot.com/-jTmtyWYtinI/UkI0mFE4QoI/AAAAAAAAEBc/hn74_dEvNyo/s1600/apparentdiskofvenus.jpg "Apparent Disk of Venus with Chromatic Aberration [Stellar Neophyte Astronomy Blog]")