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| Determining magnification |
Determining magnification
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| Determining magnification: The power of an eyepiece is found by dividing the focal length of your telescope by the focal length of the eyepiece. For example, a 20mm eyepiece on a 2000mm telescope (2000 ¸ 20) gives you 100 power (100x). This makes objects appear 100 times closer to you through the telescope than they appear to your unaided eye. The same 20mm eyepiece on a 1000mm focal length scope (1000 ¸ 20) gives you 50x. The longer the telescope focal length, or the shorter the eyepiece focal length, the higher the power – but the dimmer the image. |
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Terms of Sale | PRIVACY POLICY 7/1/2004 | Fine Print
Toll-Free Telephone Astronomics: 800-422-7876; Christophers, Ltd.: 800-356-6603
Alternate Telephone: 405-364-0858 24 Hour Fax Line: 405-447-3337
Telephone Hours: Monday 8 AM - 6 PM CST
Tuesday-Friday 8 AM - 8 PM CST
Saturday Noon - 5 PM CST
Store Hours: Monday-Friday 9 AM - 5 PM CST
Saturday Noon - 5 PM CST
Astronomics / Christophers, Ltd.
680 S.W. 24th Ave.
Norman, OK, 73069
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