The Cedar Glen Observatory
Eyepiece Calculator
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Enter Eyepiece Measurements:
Focal Length:
mm
Please enter the eyepiece focal length.
Eyepiece focal length value is invalid.
Apparent Field Of View:
°
Please enter the eyepiece apparent field.
Eyepiece apparent field value is invalid.
Enter Any Two Telescope Measurements:
Focal Length:
mm
Telescope focal length value is invalid.
Aperture:
mm
Telescope aperture value is invalid.
Focal Ratio: f/
Telescope focal ratio (f/#) is invalid.
Please enter at least two telescope measurements.
Calculated Values:
Magnification:
x
True Field Of View:
Exit Pupil:
