Celestial hemisphere:  Southern  ·  Constellation: Scorpius (Sco)  ·  Contains:  B283  ·  B287  ·  M 7  ·  NGC 6444  ·  NGC 6453  ·  NGC 6475  ·  PK355-03.2  ·  PK355-03.3  ·  PK355-04.1  ·  PK355-04.2  ·  PK356-03.1  ·  PK356-03.2  ·  PK356-03.3  ·  PK356-04.1  ·  Ptolemy cluster  ·  Ptolemy's Cluster
Ptolemy Cluster = M7 = NGC6745, Julian Shaw
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Ptolemy Cluster = M7 = NGC6745

Ptolemy Cluster = M7 = NGC6745, Julian Shaw
Powered byPixInsight

Ptolemy Cluster = M7 = NGC6745

Equipment

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Description

Ptolemy Cluster imaged using the ASI6200 and the APM Riccardi Reducer. The corner stars are the best I could achieve after many, many experiments with the spacing. This is probably the last image I will make with this reducer since I now have an Astro-physics QuadTCC which is much better; see my Anteater Nebula made with the QuadTCC for comparison.

RGB 14 x 300 sec each

Comments

Sky plot

Sky plot

Histogram

Ptolemy Cluster = M7 = NGC6745, Julian Shaw

In these public groups

ASI 6200 MM Pro