Pixel scale tells you how much sky each pixel of your astronomy camera covers, measured in arcseconds per pixel, and it decides whether your setup is under sampled, well matched or over sampled for the night sky. It is the pixel size in microns divided by the focal length in millimeters, multiplied by two hundred six point three. For deep sky imaging most people aim for one to two arcseconds per pixel to match typical atmospheric seeing. This calculator computes the scale from your pixel size and focal length, then flags the sampling regime so you can decide whether to add a Barlow, a reducer or binning. It runs entirely in your browser.
Pixel scale tells you how much sky each pixel of your astronomy camera covers, measured in arcseconds per pixel, and it decides whether your setup is under sampled, well matched or over sampled for the night sky. It is the pixel size in microns divided by the focal length in millimeters, multiplied by two hundred six point three.
Yes. CCD Pixel Scale Calculator is completely free, with no sign-up and no usage limits.
Yes. CCD Pixel Scale Calculator runs in any modern web browser. There is nothing to download or install.
Yes. CCD Pixel Scale Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.