Truly stunning!
It's the best astro photo I have seen so far this year.
I hope your weather improves for you to complete the project.
If it makes you feel any better my weather has als been pants, I have managed to get out once this year so far and that was with a half moon bleaching the sky out.
An awesome photo, I really look forward to seeing the completed mosaic.
Thanks for sharig it!
Clear skies
Paul M