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THE FEUTEX TOOLKIT

Astrophotography Pixel Sampling

Compare angular pixel scale with seeing and estimate pixels across a target.

Astronomy workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaImage scale = 206.26480624709636*p/f; Pixels across seeing disk = s*f/(206.26480624709636*p); Pixels across target = t*f/(206.26480624709636*p)
Sources and model references

How to use this tool

  1. Compare angular pixel scale with seeing and estimate pixels across a target.
  2. Set pixel pitch, effective focal length, seeing, target diameter in the indicated units.
  3. Calculate and compare image scale, pixels across seeing disk, pixels across target.

Try this example

{
  "p": 5,
  "f": 1000,
  "s": 2,
  "t": 60
}

Accuracy and scope

Idealized educational model. Enter measured values in the displayed units; real systems may require additional corrections.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.