amanico[JLC Moderator]
402258
Jaeger Lecoultre Master Grande Tradition Tourbillon Celeste 2019
The good idea. While we are seeing Astronomical Master Grand Traditions for some 15 years, now, with minute repeater or dragons flying all over the dial, I still think that a " simple " Master Grande Tradition, just with a sky map, and without tourbillon, would be the best.
Here is the Master Grande Tradition Tourbillon Celeste, from 2019. The flying tourbillon " flies " all around the dial.

But without this Tourbillon, it would be nicer! Remember: Less is more... And often, better.
The movement is nice, but I would prefer it with less " plain " plates or bridges, to see more parts. The German Silver is bewitching!

And last nut not least, the trick of this watch. An excellent idea, these luminous stars and constellations shining in the dark!
Best,
Nicolas