How does a telescope work different from a camera lense?
water_skipper asked:
How does a telescope work different from a camera lense? I’m specifically wondering about magnification. With a camera lense, a longer lense means higher magnification so to get really high magnification it needs a really long lense. With a telescope they just change the eyepiece to get higher magnification and don’t change the length of the telescope.. How is it telescopes can change magnification like that and camera lenses can’t?
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How does a telescope work different from a camera lense? I’m specifically wondering about magnification. With a camera lense, a longer lense means higher magnification so to get really high magnification it needs a really long lense. With a telescope they just change the eyepiece to get higher magnification and don’t change the length of the telescope.. How is it telescopes can change magnification like that and camera lenses can’t?
August 20th, 2009 at 2:41 am
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It is my hope and prayer that you will be able to use the above information. “May the Lord Jesus Christ continur to richly bless you in all of your endeavours.”
Sincerely,
(a.k.a. calvaliear)
August 21st, 2009 at 10:55 am
UGHH weee ha
it is a bit more than that
telescopes use large lenses because it permits more light to enter
microscopes use small lenses for sharpness
sharpness is not much of an issue in telescopes.
the camera uses a compromise for resolution aberration…
For example in an inspection microscope say 10 to 30X if you change the eye piece for larger magnification the colors don’t focus at the same place anymore.
the solution is to change the first lens for a smaller one and bring the instrument closer to the subject
the draw back is no room to work
it is all a balancing act
Guru