Messier Marathon – 18th April 2026

The Portuguese Association of Amateur Astronomers (APAA) celebrates its 50th anniversary on the afternoon of April 18th at the Museum of Light in Mourão. That same evening, a Messier Marathon will take place, aiming to observe through telescopes as many galaxies, nebulae, and open and closed clusters as possible, from a total of 110 objects cataloged by the 18th-century French astronomer Charles Messier. This is an initiative of the Albireo Association, together with the Portuguese Association of The Portuguese Association of Amateur Astronomers (APAA) celebrates its 50th anniversary on the afternoon of April 18th at the Museum of Light in Mourão. That same evening, a Messier Marathon will take place, aiming to observe through telescopes as many galaxies, nebulae, and open and closed clusters as possible, from a total of 110 objects cataloged by the 18th-century French astronomer Charles Messier.

This is an initiative of the Albireo Association, together with the Portuguese Association of Amateur Astronomers Association (APAA), the Institute of Astrophysics and Space Sciences (IA), and EDIA

 

April 20, 2026