Thanks. I'm having trouble finding a macOS tool that will work unless I install Java and use Aladin Desktop (Aladin Lite does not work with FITS files).

I'm still working on cleaning up the metadata/linting. But I got the Aladin java thing working on my linux workstation (no luck on lsst-devl03, it froze and needed a kill -9).

Here is what ds9 shows for the patch in ci_hsc:

And here is what the initial view of java -jar AladinBeta.jar hips/i looks like:

And zooming out, it looks like the patch (with the asinh scaling, I didn't work hard on this):

PRs are here:
https://github.com/lsst/pipe_tasks/pull/706
https://github.com/lsst/ci_imsim/pull/28
https://github.com/lsst/ci_hsc_gen3/pull/83

This looks good to me. I have some suggestions for removing code reuse and adding some comments. My main concern is that there are no tests to see if anything happened. The ci_hsc_gen3 tests don't see if some files turned up in relevant Norder directories and nothing checks that a property file contains the expected content.