The telescope at a small observatory has objective and eyepiece focal lengths respectively of16.6mand12 cm.If this telescope is used to view a1660mdiameter lunar crater on the surface of the moon 3.7710⁸m from the surface of the Earth, determine the following.

(a) angular magnification of the telescope (b) size of the first image m (c) length of the barrel of the telescope m (d) angle subtended at the unaided eye by the lunar crater rad (e) angle subtended at the eye when the lunar crater is viewed through the telescope rad

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Given Focal length of the objective lens fo 166 m Focal length of the eyepiece fe 12 cm 012 m Diamet... View the full answer