The Coathanger

The Coathanger - Cr399, NGC6802

The Coathanger

The Coathanger also called Brocchi's Cluster or Al Sufi's cluster. The Swedish astronomer Collinder listed it as Cr 399 in his catalogue of open clusters in 1931.
Crossed copper wires were used to make the diffraction spikes.

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Instrument: William Optics Zenithstar 80mm f/6
Mount: Skywatcher H-EQ5
Exposure: 7*120s = 14min
Camera: Canon EOS 350D
ISO/Film: 1600
Tracking: Manual
Processing: Iris, Photoshop

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