Angular Resolution Calculator

Calculate the theoretical angular resolution (Rayleigh Criterion) of any optical system, such as a telescope, microscope, or camera lens, based on the wavelength of light and aperture diameter.

Angular Resolution (Rayleigh Criterion)

e.g., 550 nm for visible green light
e.g., 0.1 m for a 10cm telescope

How to Use

  1. 1

    Enter Wavelength

    Input the wavelength of light in nanometers (nm). E.g., 550nm for visible green light.

  2. 2

    Enter Aperture Diameter

    Input the diameter of your lens or mirror in meters (m).

  3. 3

    Calculate

    Click calculate to find the minimum angular separation required to distinguish two point sources.

Frequently Asked Questions

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