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Downloading Corona imagery

A practical demonstration of where and how to download Corona imagery.
In this section we are going to be working with Corona imagery – downloading it and using it in QGIS.

Searching for Corona in EarthExplorer

Corona imagery can be downloaded from the EarthExplorer website.

  • 1) Make sure you are logged in and select your study area.

AoI screenshot Select your study area.

Revisit Week 3.4 if you need a reminder on how to do this.
  • 2) Click on the “Data Sets »” button.
  • 3) Expand “Declassified Data” and tick “Declass 1 (1996)”. This refers to the year in which the imagery was declassified by the US government.

Select dataset screenshot Selecting the right set of declassified data.

  • 4) Click the “Additional Criteria »” button.
  • 5) Expand “Camera Resolution” and select “Stereo High”.
  • 6) Expand “Download Available” and select “Yes”. This will show you all the images of your area that are free to download.
  • 7) Click the “Results »” button.

Narrowing Corona screenshot results Selecting only high-resolution Corona imagery that is available for download.

You should now have a page of results of Corona imagery of your area of interest!

Downloading Corona imagery

We now have to select which Corona image we are going to download.

  • 1) Use the “Show Footprint” button to show the extent of images to help narrow down your choice.

Footprint screenshot Image footprints will help narrow down your choice.

  • 2) Use the “Show Browse Overlay” button to check that images you might like to download are not cloudy.

Overlay screenshot Using the “Show Browse Overlay” button to display low resolution versions of your Corona images.

  • 3) Once you have chosen an image, click the “Download Options” button and then click the “Download” button in the new window.

Downloading screenshot Downloading our chosen image.

Corona images are big files, so they may take a while to download!

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