I think I might have found the perfect spot to sneak in Vader’s castle!
You can literally grab the silhouette of Vader’s castle from the deleted scene here:
https://i.redd.it/gcrk2oz4zr451.jpg
And mask it into the the background of this shot here:
https://pbs.twimg.com/media/EVHT9DpU8AAVtHG.jpg