Magnification Calculator
Telescope Specifications
Eyepiece Specifications
Aperture Diameter
(inches)
user input
Eyepiece focal length
(mm)
user input
Focal Ratio
(f/#)
user input
Magnification
(power)
Focal Length
(inches)
Eyepiece Apparent FOV
(degrees)
user input
Focal Length
(mm)
True Field of View
(degrees)
Aperture
(sq. inches)
True Field of View
(arcminutes)
Barlow (x)
user input
Directions:
Enter values for the "user input" blocks - then press the "Calculate" key
Eyepiece Apparent FOV Table
- A listing of popular manufacturers eyepieces and their apparent field of view's (FOV).
Telescope Characteristics
Resolving Power
(arcseconds)
Limiting Magnitude (M
L
) Table
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Tutorials
Version 4.1 by Matt Oltersdorf 2000 04 10 10:00 UTC