YRGB 22:35, LRGB 22:42, RRGB 22:44:
Io/Ganymede:
Ammonia absorption band test - f/10:
A test of 647 nm (10 nm FWHM) filter on Jupiter. At 647 nm there is an ammonia absorption band. Not very strong, but noticeable on spectrum charts.
Red-A,A: red color is where red channel is brighter than ammonia channel (so dark ammonia area), bluish is where ammonia is brighter than red.
Alignment isn't perfect but in some places there is a bit of red color - more than from misaligned edges.
