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Astronomy Works
MAKING YOUR OWN TELESCOPE
MAKING YOUR OWN TELESCOPE
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Prior to the time of the telescope, man's view of the celes-
tial universe was woefully restricted when compared with what
now can be enjoyed on any clear evening with ordinary binoculars.
There were visible to him then only the naked-eye objects, the sun
and the moon, five of the planets, and on a clear night stars down to
about the 6th magnitude, some 2,000 in all.1 A few hazy spots
could also be seen, and there would be an occasional comet. Com-
pletely unknown were the outer planets, satellites of the planets,
Saturn's rings, and infinite numbers of stars and galaxies.
tial universe was woefully restricted when compared with what
now can be enjoyed on any clear evening with ordinary binoculars.
There were visible to him then only the naked-eye objects, the sun
and the moon, five of the planets, and on a clear night stars down to
about the 6th magnitude, some 2,000 in all.1 A few hazy spots
could also be seen, and there would be an occasional comet. Com-
pletely unknown were the outer planets, satellites of the planets,
Saturn's rings, and infinite numbers of stars and galaxies.
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