What is the magnification of a telescope which has an objective lens of focal length 2.50 m and a diameter of 1.00 m, and an eyepiece of focal length 4.50 cm?
What is the angular resolution of this telescope for visible light (wavelength = 550 nm)?
What is the length of the telescope?
fo = objective lens focal length = 2.50 m
fe = eyepiece focal length = 4.50 cm = 0.045 m
magnification is given as
m = - fo/fe = - 2.5 / 0.045 = - 55.6
angular resolution = 1.22 /d
angular resolution = 1.22 (550 x 10-9) / (1) = 6.71 x 10-7 rad
Length of telescope =L = fo + fe = 2.5 + 0.045 = 2.545 m
What is the magnification of a telescope which has an objective lens of focal length 2.50...
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