Even aligning very advanced and pathological systems like the allsky system in the Zeiss-Grossplanetarium, Berlin, Germany is not a soul destroying work anymore.
This system is based on twelve 4cmx4cm slides. The bottom row is projected similar to a panorama at an angle, not illuminating the star projector. The upper row is generated by four projectors reflected by a mirror at the dome edge.

Have you ever heard of panorama projection out of the center of the dome. We had to install such a system at the Deutsches Museum, Munich, Germany.
The panorama is realized by 8 single slide projectors integrated in the Zeiss M1015 star projector.