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Originally posted by johnrobca
what sort/model/type of telescope would you need to get pictures of the moon that would give enough detail to see something say 10 foot high sat in a crater? and how much would it cost?
Originally posted by alfa1
Originally posted by johnrobca
what sort/model/type of telescope would you need to get pictures of the moon that would give enough detail to see something say 10 foot high sat in a crater? and how much would it cost?
Apparently, the angular resolution of a telescope is determined by the equation
sin(theta) = 1.220 * (L/D)
theta is the angular resolution in radians,
L is the wavelength of light,
and D is the diameter of the lens' aperture.
10 foot resolution for the moon 384,399 km away is 7.9293x10-9 radians,
so for yellow light, 580nm, works out to be a telescope with a diameter of 89 meters.
Not sure I'm right - I thought it would be larger.
Cost: One Million Dollars.
Originally posted by alfa1
Originally posted by johnrobca
what sort/model/type of telescope would you need to get pictures of the moon that would give enough detail to see something say 10 foot high sat in a crater? and how much would it cost?
Apparently, the angular resolution of a telescope is determined by the equation
sin(theta) = 1.220 * (L/D)
theta is the angular resolution in radians,
L is the wavelength of light,
and D is the diameter of the lens' aperture.
10 foot resolution for the moon 384,399 km away is 7.9293x10-9 radians,
so for yellow light, 580nm, works out to be a telescope with a diameter of 89 meters.
Not sure I'm right - I thought it would be larger.
Cost: One Million Dollars.