edit: It worked!
My planning workflow for those interested:
- I used timeanddate.com to get general information about the eclipse. At my location in Lower Austria, it’s a 90% partial eclipse with the maximum happening only a few minutes before sunset, so it’s a perfect opportunity to get a landscape photo with the eclipsed sun.
- I used photoephemeris.com to find a view point where the church and the sun line up in the sky during sunset.
- in the days before the eclipse I took some reference shots with the subject and the sun in the frame from different viewpoints in the area, recording the exact coordinates and time of each photo. One of the test shots is what’s used in the simulation here.
- I used a script for Stellarium to align the photos with exact Alt/Az angles based on the sun in the image: Stellarium Projector. Warning: This is quite janky. If anybody knows of a better tool to do this, let me know!
- After that it’s easy to simply change the time in Stellarium to visualize the photos with a simulated sky for any point in time. You can then pick out the best location/photo to position yourself for the actual eclipse.
Clear skies!