Astronomy camera pixel scale calculator

Calculate pixel scale with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use pixel scale to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Pixel pitch (micrometres)
3.76
Focal length (mm)
600
Pixel scale (arcseconds/pixel)
1.292593

Try another scenario

Pixel pitch (micrometres)
4.136
Focal length (mm)
600
Pixel scale (arcseconds/pixel)
1.421852
Calculation method

Calculation method

Pixel scale (arcseconds/pixel)

Small-angle scale=206.264806 × pixel micrometres / focal mm.

Symbols and units
a
Pixel pitch (micrometres)
b
Focal length (mm)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Calculation uses the entered values and stated mathematical model; quantities must use the labelled units. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. Small-angle scale=206.264806 × pixel micrometres / focal mm.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Share this page
Share this calculator

Leave unchecked to share the page without your entered values.