GIMP2 Image processing software

Decomposing images in GIMP2

Tonight, I took my first image of the Moon with my QHY10 camera/Equinox 80mm telescope.

The image should colour dispersion. I do have a dispersion corrector but it is 1.25 inch fitting and the QHY10 camera is definitely 2 inch fitting.

I found that this problem can be addressed using GIMP2 software – in this software there is a function called decomposition – this splits a colour image into separate individual RGB images.

I have described the process I followed in GIMP2 to decompose images below.


Original image in GIM2 showing colour dispersion:

Selecting decompose in GIMP2:

Selecting RGB in decompose:

Decompose in GIMP2 results in 3 separate layers for each colour – each image is presented greyscale & can be saved: