Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  M 7  ·  NGC 6453  ·  NGC 6475  ·  Ptolemy's Cluster
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M7,  Ptolemy's Cluster, NGC 6475, Doug Summers
M7,  Ptolemy's Cluster, NGC 6475
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M7, Ptolemy's Cluster, NGC 6475

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M7,  Ptolemy's Cluster, NGC 6475, Doug Summers
M7,  Ptolemy's Cluster, NGC 6475
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M7, Ptolemy's Cluster, NGC 6475

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Description

Less than 4 degrees southeast of Messier 6 lies Messier 7, a nice but sparse open cluster in Scorpius. M7 has fewer stars than M6, and they don't seem quite as brilliant nor blue as M6's core stars. That said, the field is richer in M7, it being more within the main Milky Way belt comparatively. M7 has about 80 stars, and lies about 1000 light years away. It's age is estimated at 200 million years.

Globular cluster NGC 6453 puts in a nice bit appearance here; it resides in the upper left corner of the image. It's 37K light years distant, and is quite reddened/obscured by intervening dust/gas.

I captured this dataset while visiting the TAAA CAC dark site with my gear in southern AZ.

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