Hi Max,
The ability to capture a few things, and manipulate the object....

1. Create Celestial equator and elliptic equator axis. ability to move zenith per entered data, as in, set NCP/SCP rotation by degree's given and rotate NCP/SCP axis (celestial axis) by degrees (or even lat/lon coords, etc) . NSEW labels that follow.

2. Create/capture Galaxies, Nebula, Globular Cluster, Open Cluster and Visual Binary groups ( by style?)

3. Capture "magnitude data" attached to points (styles again).. Maybe a legend of 5 to -2 for size range, so 8 groups.

Seem possible?