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Around the turn of the century, astronomers tried constructing refracting telescopes with objective lenses bigger than one meter in diameter. These telescopes did not work. Why? Select one: the chroma

User Basilisk
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The largest refractor was the 40 inch refractor at Willians Bay, WS. (Lake Geneva)

Larger refractors cannot be built because glass of these lenses will distort under their own weight.

User Nandop
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