Messier 4 - a photo on Flickriver

Messier 4

Messier 4 or M4 (also designated NGC 6121) is a globular cluster in the constellation of Scorpius. It was discovered by Philippe Loys de Chéseaux in 1746 and catalogued by Charles Messier in 1764. It was the first globular cluster in which individual stars were resolved.

M4 is conspicuous in even the smallest of telescopes as a fuzzy ball of light. It appears about the same size as the Moon in the sky. It is one of the easiest globular clusters to find, being located only 1.3 degrees west of the bright star Antares, with both objects being visible in a wide field telescope. Modestly sized telescopes will begin to resolve individual stars of which the brightest in M4 are of apparent magnitude 10.8.

(Source: Wikipedia en.wikipedia.org/wiki/Messier_4)

Taken at Lee, IL on June 29 2016.

Image Type: LRGB. L = 15 x 120; RGB = 8 x120.

Hardware: SBIG ST-8300M, Astro-Tech 8 RC, Orion Atlas Mount.

Taken on: July 4, 2016

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