How to combine multi narrow band astronomy images

[johnptd]

I have a Ha/OIII filter for my OSC camera. I have just purchased a Hb/SII filter. Since I will need to create separate image sets for the two filters, how do I combine them a get distinct colors for the four different filter frequencies.

JohnD

[stokerg]

Hi @johnptd,

From my understanding, you'd just use the New Astrophotography Stack option and add the set of images.  There is a great tutorial here which covers this  

[johnptd]

My situation is a little different. I will have two filters combined into one image. One image set will be H-a and OIII, the other set will be H-b and SII. His tutorial has each image set is only one filter. I don't know how to break down the dual filter sets into two individual colors.

JohnD

[Critter]

I am looking for the same answers.  Trying to use 2 image sets with the 2 filters.  How do you separate the hydrogen, oxygen, and sulphur wavelengths and combine in Affinity Photo.

 

Tony