05/25/2026
Unfortunately, clear skies have been elusive for the entire month of May. However, given the clear weather conditions tonight, combined with decent seeing, transparency, and overall stability, I'm taking a chance to image an object on the Messier catalog.
Messier 13 (M13), commonly known as the Great Globular Cluster in Hercules, is a massive spherical collection of several hundred thousand stars located roughly 22,000 to 25,000 light-years away from Earth. Widely regarded as the finest globular cluster in the Northern Hemisphere's night sky, M13 spans about 145 to 160 light-years in diameter and shines with an apparent magnitude of 5.8, making it visible to the naked eye under exceptionally dark skies.
M13 packs between 300,000 and 500,000 ancient stars into a tightly bound gravitational ball.