Align stack using WCS or apertures problem

Posted by basilr on Aug 03, 2017; 7:44pm
URL: http://astroimagej.170.s1.nabble.com/Align-stack-using-WCS-or-apertures-problem-tp722.html

The problem occurs when trying to Align stacks using WCS or apertures. Using any set of images (e.g. the WASP-12b demo set) load 2-3 images into a stack, not a virtual stack. (File-import-image sequence…) Align the stack: Process-align stack using WCS or apertures Place 1 or more apertures then right click or Enter to process. The program stops. The stack aligner helps looks like this: Repeatable every time. Happens in single step mode also, program stops immediately. Now, with the same stack, do a Multi-aperture analysis. Place apertures, Select any star, doesn’t matter. The program processes the stack. Close out of all multi aperture windows. Now go back and do a stack align. It Works! The Align using WCS or apertures will now work on any image stack, as long as you don’t close out of Astroimagej ! If you do close the program you have to start over with another Multi-aperture. It seems doing a Multi-aperture “un sticks” something or resets/sets a flag/file to allow placing apertures on successive images in a stack?? I’m not sure but I think this problem is recent? Seemed to work fine until a month or so ago??? I am running Please let me know if you need more info. Thanks for a GREAT program! - Basil