New answers tagged scale
You should see if using ESRI's satellite imagery or Mapbox's satellite imagery will work for what you need. If not, I know DigitalGlobe will sell you imagery, but I'm not sure how much it costs.
You have indeed made some errors in your calculation. 156543.04 meters/pixel is a constant "based on the diameter of the Earth and the equations Microsoft used to set the zoom levels" used in two equations on the page you reference - it's not a variable. Your mistake was in substituting the map resolution your openlayers code returned for the constant. The ...
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