Two aligned green filter shots won't stack

[Babak]

I get a message

This instance of ImageIntegration defines less than three source images.

I am not sure what I am doing wrong.

Thanks

[pfile]

you need at least 3 images to stack... just add each image to ImageIntegration twice and it will be the same as integrating the 2 images by themselves.

rob

[Babak]

Much appreciated.

I have 1 Red, 2 green and 3 Blue (don't ask me why    ). I have aligned all simultaneously , now trying to stack each colour before I do RGB Integration.

Does that seem reasonable?

Cheers

[pfile]

i guess so though generally speaking you need many more than 2 or 3 images to get a good result. for sure it will be almost impossible to do good outlier rejection with so few frames...

rob

[Babak]

Thanks again