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`M = (F_p/F_e)`

12.5

The **Magnification of a Telescope** calculator compute the magnification of a telescope based on the focal lengths of the primary mirror or lens and the eyepiece.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**F**) This is the focal length of the primary lens or mirror._{p} - (
**F**) This is the focal length of the eyepiece._{e}

**Magnification:** The calculator return the magnification of the telescope.

The magnification power M of a telescope is the ratio of the focal length of the primary lens or mirror F_{P} divided by the focal length of the eyepiece F_{e}.