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| Catalogue and alternative designations | NGC
6231
|
| Type | Open Cluster |
| Position | 16 54.0, -41 48 |
| Constellation | Scorpius |
| Camera and Telescope | STL11000M and FSQ106ED |
| Focal Ratio | F5 |
| Exposure Details | Two panel HaLRGB mosaic with Baader filters. About 11 hours total imaging time |
| Description | Possibly
one of the best open clusters in
the sky, NGC 6231 is easily
visible in binoculars and under
very dark skies can be glimpsed
without optical aid. It
was discovered by Lacaille in
1755. This cluster is part
of the Scorpius OB1 association.
The interesting nebula IC 4628
can be seen above. It is
sometimes known as the
"prawn". The
Scorpius "dark tower"
can be seen to the right.
|