Detailed Render of the Earth from Space - Blender 2.5 - page 234

14. For this row, we start by adding a Render Layers node ( Add → Input → Render
Layers ), then a Hue Saturation Value node ( Add → Color → Hue Saturation
Value ), and set its Saturation value to 0.0, then we must add an RGB Curves node
and set its curve for the "C" channel as shown in the screenshot.
Next, let's add a Bilateral Blur node ( Add → Filter → Bilateral Blur ) and set its
Iterations to 50, Color Sigma to 3.0, and Space Sigma to 6.5. Finally, let's take
the controlledGlow1 node group and put it as the last node in the row.
We must now connect the nodes: Let's connect the image output of the Render
Layers node to the image input of the Hue Saturation Value node, then connect
the image output of the Hue Saturation Value node to the image input of the RGB
Curves node . Next, we connect the image output of the RGB Curves node to both
the image and determinator inputs of the Bilateral Blur node.
Finally, we must connect the image output of the Bilateral Blur node to both the
Fac and Alpha inputs of the controlledGlow1 node group.
15. For this node group, we must edit its internal ColorRamp , so let's select it. Hit the
Tab key and make sure to set the ColorRamp as follows:
F Interpolaion: Ease
F Color stop 1:
Color: 0.0 Red, 0.328 Green, 1.0 Blue
Posiion: 0.0
F Color stop 2:
Color: 1.0 Red, 0.0 Green, 0.0 Blue
Posiion: around 0.43 (the right border of the "F" of "Fac" is a good guide)
16. Let's go back to the normal ediing of nodes by pressing Tab . Remember the output
of the "B" row is the image output of the controlledGlow1 node group.