M 6 - Butterfly Cluster
M 6 - Butterfly Cluster |
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Object data of M6 |
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| Object type: | open cluster (II3r) | |
| Size: | 25' | |
| Magnitude: | 4.2 mag | |
| Constellation: | Sco | |
| Distance: | 1,600 Ly | |
| Notes: |
M6 is a young open star cluster in the constellation Scorpius (age: 100
million years). The brightest star in this cluster is the variable star BM Scorpii, a yellow supergiant (spectral type K3). BM Sco is a semiregular variable star, with its apparent magnitude varying between mag 5.5 and 7. Many open star clusters can be found in the above image:
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Exposure data |
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| Date: | 2009-09-12 | |
| Location: | La Palma / Spain (1700m) | |
| Telescope: | Rubinar300 (2.5" Maksutov Cassegrain f=300mm) | |
| Camera: | EOS1000D (ISO400) | |
| Mount: | Astrotrac TT320X | |
| Exposure time: | 47x2m | |
| Exposure time total: | 1h 34m | |
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