Compute the each part of given problem:
Problem: The telescope at a small observatory has objective and eyepiece focal lengths respectively of 19.2 m and 12 cm. If this telescope is used to view a 1980 m diameter lunar crater on the surface of the moon 3.77 108 m from the surface of the Earth,
(a) Determine angular magnification of the telescope.
(b) Determine size of the first image.
(c) Determine length of the barrel of the telescope.
(d) Determine angle subtended at the unaided eye by the lunar crater.
(e) Determine angle subtended at the eye when the lunar crater is viewed through the telescope.
Show all work, use additional paper if necessary.