MARATONA MESSIER 2025

Como conduzir uma Maratona Messier – http://astrosurf.com/re/marathon.txt

Charler Messier – http://astrosurf.com/re/messier1.html

Catalogo Messier – http://astrosurf.com/re/catalogue.txt

Messier object visibility (Bev Ewen Smith – COAA) – COAA Messier Form