M 53, NGC 5024
Located in the direction of Coma Berenices, it lies about 58,000 ly from Earth and about the same distance from the galactic centre. It is one of the more outlying globular clusters of our galaxy and is substantially poor in metals, suggesting that most of the stars are likely first generation. Some second generation stars are found, concentrated in the core region. Overall, metals abundances are comparable to those of the Milky Way's halo stars. Mass is around 8.3x105 solar masses.
Classified as V (intermediate concentrations) on the Shapley-Sawyer globular cluster concentration scale (1927).
|Camera:||SBIG STL11000M, Astrodon filters||Scope:||Takahashi TOA-130, f=1000mm, f7.7, fov=1.0° x 0.7°|
|Mount:||Takahashi EM-200 Temma 2||Guiding:||internal|
|Filters/Exposures:||R:G:B = 10:10:10 ≡ 30m||Location:||ASV's LMDSS, Lady's Pass, Victoria, Australia|
|Date:||July 2023||Processing:||CCDStack2, RegiStar and Photoshop CS5|