3 ms·
Additional links: https://en.wikipedia.org/wiki/Messier_object https://en.wikipedia.org/wiki/Messier_object https://en.wikipedia.org/wiki/Caldwell_catalogue ht
by NKosmatos 2y ago
Additional links:
https://en.wikipedia.org/wiki/Messier_object https://en.wikipedia.org/wiki/Messier_object
https://en.wikipedia.org/wiki/Caldwell_catalogue https://en.wikipedia.org/wiki/Caldwell_catalogue
https://en.wikipedia.org/wiki/New_General_Catalogue https://en.wikipedia.org/wiki/New_General_Catalogue