Telescope magnification calculator
Magnification, exit pupil, limiting magnitude and field of view for a telescope and eyepiece.
Telescope magnification calculator
Magnification, exit pupil, limiting magnitude and field of view for a telescope and eyepiece.
48x
Magnification
f/6
Focal ratio
4.2 mm
Exit pupil
1.08°
True field of view
magnitude 14.2
Faintest star, about
400x (about 2x the aperture in mm)
Highest useful magnification
29x (a 7 mm exit pupil)
Lowest useful magnification
Runs in your browser: what you type or paste here is never sent to Hominin. You can also search for it: telescope magnification calculator.