Pulling night-shine from images of moons, how can i attempt night-shine extraction in Gimp on a RAW image? Options

[TrappistPlanets]

I tried to pull any possible nightshine from this umbriel RAW image (below), but i keep getting nothing, other than some terminator stuff, same goes for Triton, and Oberon (ik the night-shine for the 2 uranian moons would be low resolution, bs it was not the closes approach point like it was for Titania).


Also, is it possible to extract any higher detail plutoshine from RAW half phase Charon images (pluto is pretty bright!)?

i also want to try to pull out more detail of this stuff way beyond into the darkside of this image i found on one of the post encounter threads



so this is where i need help, how can i extract night-shine (either from atmosphere or from a nearby large object (like a planet)) in gimp?

[Phil Stooke]

Regarding the Uranian satellites illuminated by light reflected off the planet: you can only see it if you are looking at the part of the satellite which faces Uranus - if you are seeing the region facing away from the planet you won't see anything. In the absolutely ideal case you would see 50% of the moon lit by the sun and another 25% lit by the planet, but viewing directions will not always cooperate. You might like to see this blog post by Ted Stryk:

https://www.planetary.org/articles/1362


And this is the LPSC abstract that started it all:

https://www.lpi.usra.edu/meetings/lpsc2001/pdf/1074.pdf

Believe it or not, nobody had noticed this before. I can't believe it was over 20 years ago.

Phil