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Home Q & A Board Science-Related Homework Help Physics
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doit_the_clown doit_the_clown
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7 years ago
Spherical aberration in the primary mirror of a reflecting telescope is GENERALLY avoided by

(a)   making the mirror surface a parabolic shape.
(b)   using adaptive optics.
(c)   putting extra lenses in the light beam to correct for the shape of the primary mirror.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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papachulopapachulo
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7 years ago
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doit_the_clown Author
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7 years ago
Thank you, thank you, thank you!
Katey_maree
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Yesterday
Good timing, thanks!
cipcal
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2 hours ago
This site is awesome
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