@bazza I used a 10mm lens (1.5mm crop factor on my dslr makes it an effective view of 15mm). I first stitched a 360x180 degree equirectangular projection (i.e. flat) panorama, then converted the projection to make it a little planet.
@Ofnuts, thanks for the feedback. I could try different orientations, but then I’d have to do all the post processing on the final image again, such as cloning out the tripod etc.