Notes
Magnification of Terrestrial Telescope…
Magnification of Terrestrial Telescope –(a) For relaxed eye, M∞ = f0/fe
In this position, length of telescope L∞ = f0 + 4f + fe
(b) When a final image is formed at least distance of distinct vision,
M0 = f0/fe (1 + fe/D)
Length of telescope,
L∞ = f0 + 4f + ue
f0 = Focal length of objective lens
fe = Focal length of eyepiece
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