Notes

Magnification of Galilean Telescope…

Magnification of Galilean Telescope –
(a) For relaxed eye, M_∞ = f₀/f_e
In this position, length of telescope L_∞ = f₀ – f_e
(b) When a final image is formed at least distance of distinct vision,
M_D = f₀/f_e (1 + f_e/D)
Length of telescope, L_D = f₀ – u_e