As I'm imaging the Sun with a monochromatic camera the result is typically gray. I'd like to add colours when imaging in H-alpha and CaK. This is what I found when using Photoshop (Cs4) :
For H-alpha imaging (page 356 of Solar Astronomy):
Use of levels to change the "midpoint" of each colour RGB and finaly RGB aswell.
R = 1,3 - G = 0.44 - B = 0.2 and RGB =1.8
For Ca-K imaging :
Use "image, adjustments, fotofilter" and adjust RGB colours to 150;33;255
Next change contrast +/-10, colourtone -10 and saturation by +10. Last change histogram with +10/15.
