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M10 Located in the direction of Ophiuchus, it is relatively close to the Earth at just 14,300 ly, is approximately 83 ly in diameter and has a mass of about 2.3x105 solar masses. While relatively metal-poor (ie contains few elements heavier than helium) the cluster shows indications of having been enriched in metals derived from red giants and type II supernovas. Classified, VII (intermediate loose concentration), on the Shapley-Sawyer globular cluster concentration scale (1927).
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| 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 = 12:12:12 ≡ 36m | Location: | ASV's LMDSS, Lady's Pass, Victoria, Australia |
| Date: | August 2023 | Processing: | CCDStack2, RegiStar and Photoshop CS5 |