Magnification of Eyepieces

Mirror Diameter (inches) user input
Focal Ratio (f/#) user input
Focal Length (inches)
Focal Length (mm) user input
Aperature (sq inches)
Barlow (x) user input


Eyepiece (mm)

Magnification (x)

Exit Pupil (mm)
mm
55 mm
40 mm
32 mm
26 mm
20 mm
15 mm
12.5 mm
9.7 mm
6.4 mm
4.8 mm

The above table indicates eyepiece magnification. Also shows exit pupil. A negative magnification number means the eyepiece either goes below 5x to the inch, or above 50x to the inch. In other words, overkill.

Where needed, fill in "user input" fields and click the [Calculate] button.

[Return to Top]
[Go to Home Page]

Copyright © 2005 Muskegon Astronomical Society, Inc.
Our email address is: maswmich-astro.org

This web page was last updated 04/03/08