Step 4: Assign Colors

Dust RGB with its 3 input images in different color guns; the inputs are: IR12.0-10.8, IR10.8-8.7, and IR10.8

The best assignment of spectral channels to colors for this RGB is:

  • Red for the 12.0 µm IR minus 10.8 µm IR difference image
  • Green for the 10.8 µm IR minus 8.7 µm IR image
  • Blue for the 10.8 µm IR image

In the resulting RGB:

  • Magenta, pink, and orange mark dust
  • Reds mark thick, cirrus cloud
  • Dark blue marks thin cirrus cloud
  • Orange and brown mark water cloud
  • The background appears in various shades of blue