Meade NGC-70TC Refractor Telescope: Left-to-Right Inversion Explained

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SUMMARY

The Meade NGC-70TC refractor telescope inverts images left-to-right, which is a standard characteristic of astronomical refracting telescopes. This inversion occurs due to the optical design, where the arrangement of lenses causes the image to flip. In contrast, terrestrial refracting telescopes utilize a concave eyepiece to maintain an upright image. Understanding this optical behavior is essential for users of astronomical telescopes.

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DocZaius
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Hello,

I bought a Meade NGC-70TC refractor telescope and the image is inverted left-to-right. Is that normal? A google search didn't yield any answers.
 
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Hi DocZaius! :smile:

An astronomical refracting telescope always inverts …

either left-to-right or up-and-down, depending on which way your head is screwed on. :wink:

(a terrestrial refracting telescope has an concave eyepiece instead of a convex one, or some other arrangement, to keep the image the right way up)
 

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