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MAKING YOUR OWN TELESCOPE
     

MAKING YOUR OWN TELESCOPE

by ALLYN THOMPSON
 

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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,

Overview

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.

Product Details

BN ID:
2940015494143
Publisher:
Astronomy Works
Publication date:
10/19/2012
Sold by:
Barnes & Noble
Format:
NOOK Book
File size:
4 MB

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