M 12
M 12 |
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Object data of M12 |
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| Object type: | Globular Cluster (IX) | |
| Size: | 16' | |
| Magnitude: | 6.7mag | |
| Constellation: | Oph | |
| Distance: | 16,400 Ly | |
| Notes: | Messier 12 is a globular cluster in the constellation Ophiuchus. It is about 16,400 light-years from Earth and has a spatial diameter of about 75 light-years. The brightest stars of M12 are of 12th magnitude. With a Shapley-Sawyer rating of IX, it is rather loosely packed for a globular and was once thought to be a tightly concentrated open cluster. | |
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Exposure data |
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| Date: | 2024-05-26 + 2024-06-13 | |
| Location: | Nussbach / Austria (400m) | |
| Telescope: | TEC APO 200 FL with TEC flattener-reducer 0.9x (f=1500mm) | |
| Camera: | QHY 268M with Baader CMOS filters | |
| Binning: | RGB 1x1 | |
| Mount: | ASA DDM85 | |
| Exposure time: | RGB 21x2min each | |
| Exposure time total: | 2h 06min | |
| Notes: | ||
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