Zdobienie / Decoration

NGC 869 oraz NGC 884 – Double Cluster

Zdobienie / Decoration

NGC 869 oraz NGC 884 – Double Cluster

Also known as Caldwell 14 or open clusters NGC 869 and NGC 884, ( often designated h Persei and χ Persei, respectively), which are close together in the constellation Perseus. Both visible with the naked eye, NGC 869 and NGC 884 lie at a distance of 7,500 light years.

There are more than 300 blue-white super-giant stars in each of the clusters. The clusters are also blueshifted, with NGC 869 approaching Earth at a speed of 39 km/s (24 mi/s) and NGC 884 approaching at a similar speed of 38 km/s (24 mi/s). Their hottest main sequence stars are of spectral type B0.

Source: https://en.wikipedia.org/wiki/Double_Cluster

Double Cluster / Caldwell 14 / Open clusters NGC 869 / NGC 884

 

  • Composition: Astro Pixel Processor,
  • Processing: GIMP v2.10.14 + plug-ins (Linux),
  • Lights: 24 x 96[s], ISO 1250,
  • Flats, Darks, Bias.

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