Re: Subtracting a Galaxy template

Posted by karenacollins on Nov 07, 2023; 7:01pm
URL: http://astroimagej.170.s1.nabble.com/Subtracting-a-Galaxy-template-tp2302p2303.html

I think I'm following what you have tried. I think the only thing that you may need to do differently is to include the reference image maybe at the beginning or end of the stack you are wanting to subtract it from (so that it gets aligned with all of the other images). Using virtual stack is a good idea, as you have done, so that you can then deal with the images on disk, and exact the aligned reference image back out of the aligned stack folder and save it somewhere else.

Next open the aligned stack (this time in memory) and then open the aligned reference image into a different AIJ image display window.

Then use the Image_Display > Process > "Image/stack calculator" to subtract the reference image from all slices in the stack with a single subtract operation.

Let us know if we're missing something on where you are running into trouble.

Karen