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in inches. A telescope with a three-inch aperture should not be pushed beyond 150 power.
The magnification is determined by dividing the telescope’s focal length by the size of the eyepiece. Let’s say a telescope has a focal length of 1,000 millimeters and you use a 25 mm eyepiece. The telescope will have a magnification of 40. A 10 mm eyepiece raises the magnification to 100.
“The smaller the eyepiece, the greater the magnification,” Lyons said. “But it also
See SCOPE, Page 45
94.5%