M 71
M 71 |
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Object data of M71 |
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| Object type: | globular star cluster | ||
| Size: | 7' | ||
| Magnitude: | 8.2 mag | ||
| Constellation: | Sge | ||
| Distance: | 13,000 Ly | ||
| Notes: |
M71 is a loose but beautiful globular cluster in the small constellation
Sagitta. For a long time, the classification of M71 as a globular cluster
was uncertain, many astronomers thought it was a rather condensed open
cluster. The golden-yellow color of M71 is a consequence of the reddening of the star light by dust: E(B-V) = 0.31 mag. |
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Exposure data |
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| Date: | 2010-07-18 + 20 | ||
| Location: | Nussbach / Austria (400m) | ||
| Telescope: | 12" Newtonian telescope (f=1120mm) | ||
| Camera: | ST2000XM with CFW8 and Baader Filters | ||
| Binning: | L 1x1 / RGB 1x1 | ||
| Exposure time: | L 44x2m / R 9x5m / G 9x5m / B 9x5m | ||
| Exposure time total: | 3h 43m | ||
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