GLCF SRTM Image Downloading Page 10

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It will look like this:

Click on the "ID" field.

Note there are two fields. The one you want is the "3 arcsec Unfinished" NOT the "1 arcsec Unifinished".

This is because the 1 arcsec dataset only covers the USA regions NOT the rest of the world. This is because of security reasons relative to national security. Further to the point, the 1 arcsec data is far higher resolution then what we actually need for the purposes of Orbiter. The mesh objects would be FAR to big to actually render in Orbiter, and we would not have the bandwidth to distribute such a larger file system. It would also require a whole new coordinate matching system to be developed for the higher resolution relative to the ETM+ data. The amount of time to both develop the extra processes and procedures and tutorials to manifest the support for this higher resolution data, with the return of only the USA regions. Isn't worth the free time we are putting into this project.

If you really want to use the 1 arcsec dataset then you can, but you'll have to down sample your processed data before submitting it as a completed product to our development team. I cannot accept the 1 arcsec data into our development process. So you would be wasting your time, and effectively our time as well because we have so many tiles to process even at the 3 arcsec resolution.

Now you may be asking, whats the difference?

The difference is 3 arcsec data is about 90 meters per pixel. 1 arcsec data is about 30 meters per pixel.

Make sure the "3 arcsec Unfinished" is highlighted in yellow. Then press "Download".

A new window will pop up.

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