Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  M 7  ·  NGC 6453  ·  NGC 6455  ·  NGC 6475  ·  Ptolemy's Cluster
M 7 the Ptolemy's cluster, jackstar
M 7 the Ptolemy's cluster
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M 7 the Ptolemy's cluster

M 7 the Ptolemy's cluster, jackstar
M 7 the Ptolemy's cluster
Powered byPixInsight

M 7 the Ptolemy's cluster

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Description

M 7 is an open cluster of stars in the constellation of Scorpius. Estimated distance is 980 light years from Earth. I decided to increase my exposure time for this image, mainly to test the guiding over a longer exposure but also, as the file size of a single frame is approaching 50mb with the Asi2600, to end up with less for the stacking software to deal with.

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M 7 the Ptolemy's cluster, jackstar