Yes, such animated sky objects are very nice. Jupiter was quite impressive, thanks for the link.
Also thanks for sharing your setup of the above render. This is not a hemisphere look but a mirror ball look. There is much more than a hemisphere because a mirror ball shows everything that’s behind it towards the perimeter. There is a way to limit a mirror ball to just show a hemisphere (like a circular fisheye lens looking up). With your Bryce 7.1, you should have got some content and tutorials as well. If you can locate mine - content\tutorials\Horo Wernli\ look at Hemispheres. There is also DoubleMirror.obp which only reflects the hemisphere. Perhaps it helps.