Dawes Limit Calculator

Dawes Limit Calculator calculator can be used to determine the minimum distance at which two objects can be distinguished as separate when viewed by the naked eye.

Input Parameters

Calculation Results

Calculation Formula

DL = (125 * Aperture) / (Visual Acuity * Wavelength)

Where:
DL is the Dawes Limit (in meters).
Aperture is the aperture of the eye in arc seconds.
Visual Acuity is the visual acuity in arc minutes.
Wavelength is the wavelength of light in nanometers.

Result

Dawes Limit (DL): -- meters

Dawes Limit Calculator Calculator Usage Guide

Learn how to use the Dawes Limit Calculator calculator and its working principles

How to Use the Calculator

The Dawes Limit Calculator helps you determine the minimum distance at which two objects can be distinguished as separate when viewed by the naked eye. To use the calculator, follow these steps:

  1. Enter the aperture of your eye in arc seconds.
  2. Enter your visual acuity in arc minutes.
  3. Enter the wavelength of light you are observing in nanometers.
  4. Click the "Calculate" button to compute the Dawes Limit.
  5. The result will be displayed in meters.

Understanding the Formula

The formula used to calculate the Dawes Limit is:

DL = (125 * Aperture) / (Visual Acuity * Wavelength)

Where:

  • DL is the Dawes Limit (in meters).
  • Aperture is the aperture of the eye in arc seconds.
  • Visual Acuity is the visual acuity in arc minutes.
  • Wavelength is the wavelength of light in nanometers.

Example

If your eye has an aperture of 2 arc seconds, your visual acuity is 1 arc minute, and you are observing light with a wavelength of 550 nm, the Dawes Limit would be calculated as follows:

DL = (125 * 2) / (1 * 550) = 0.45 meters