M 46 + M 47
M 46 + M 47 |
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Object data of M46 |
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| Object type: | Open star cluster (II2r) | |
| Size: | 27' | |
| Magnitude: | 6.1mag | |
| Constellation: | Pup | |
| Distance: | 5,000 Ly | |
| Notes: | Messier 46 is a rich star cluster in the constellation Puppis. There are an estimated 500 stars in the cluster, and it is thought to be some 300 million years old. As a special and famous feature which is also obvious in the above image, a planetary nebula (NGC 2438) appears within the apparent borders of M46. This nebula is most probably not a true member but is superimposed, or perhaps a passing guest. | |
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Object data of M47 |
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| Object type: | Open star cluster (I3m) | |
| Size: | 30' | |
| Magnitude: | 4.4mag | |
| Constellation: | Pup | |
| Distance: | 1,600 Ly | |
| Notes: | Messier 47 is a much younger open star cluster (80 to 300 Mio years). | |
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Exposure data |
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| Date: | 2017-11-19 + 2017-11-20 | |
| Location: | ATHOS Centro Astronomico / La Palma (900m) | |
| Telescope: | Pentax 125 SDP (f=800mm) | |
| Camera: | Nikon D810A (ISO800) | |
| Mount: | Skywatcher EQ6-R | |
| Exposure time: | 30x6min | |
| Exposure time total: | 3h00min | |
| Notes: | Image acquisition by CEDIC
team (Markus Blauensteiner, Christoph Kaltseis, Bernhard Hubl) Image processing by Markus Blauensteiner |
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