Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.astronomy.com/observing/equipment-use/2012/07/observing-basics-eyepieces
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Äàòà èíäåêñèðîâàíèÿ: Sun Apr 10 12:13:41 2016
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Observing Basics: Eyepieces | Astronomy.com
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Observing Basics: Eyepieces

In this episode, Senior Editor Michael E. Bakich answers one of the most common eyepiece questions he receives: What do those numbers mean?
RELATED TOPICS: OBSERVING | EYEPIECES | ACCESSORIES
What do the numbers mean?

Focal Length of your Telescope (in mm) / Focal Length of your Eyepiece (in mm) = magnification
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