Sorry for the lack of updates, but there's nothing really interesting. I've decided to remap it again because the previous mapping wasn't giving me enough resolution, so
I'm struggling with that now.
I'll use a 4096x2048 map (that can be split into two 2048^2 if needed), plus probably a 1024 one for the hangar bay.
Because the Astraeus is meant for ship-to-ship combat, the hangar bay is normally protected by an armored door.

This opens up to reveal the bay:

The 18 white tubes on the sides are docking points, used for additional fighter storage and quick launching.
I also
made a video of the animation. SCP supports this kind of animation now, right?