Zdobienie / Decoration

IC 1805 – Heart Nebula and interstellar dust

Zdobienie / Decoration

IC 1805 – Heart Nebula and interstellar dust

7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. It is an emission nebula showing glowing ionized hydrogen gas and darker dust lanes.

The brightest part of the nebula (a knot at its western edge) is separately classified as NGC 896, because it was the first part of the nebula to be discovered. The nebula’s intense red output and its morphology are driven by the radiation emanating from a small group of stars near the nebula’s center. This open cluster of stars, known as Collinder 26 or Melotte 15, contains a few bright stars nearly 50 times the mass of our Sun, and many more dim stars that are only a fraction of our Sun’s mass.

On the left side of the photo you can see an interstellar dust (grey, dark grey).

The photo is the result of combining two different photo sessions but in the same location. The frame is not proportional, it is too wide. However, I didn’t want to crop it because of the interstellar dust revealing on the left side of the frame. Personally, I liked this photo very much and I think it is better than the previous one, which was made only from one photo session.

IC 1805 – Heart Nebula

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


Technical information

  • Location: La Palma 12.2020
    ATIK Horizon RGB,
  • Hypergraph TS420 mm f/2,8 OTA PH6,
  • CEM25p with small self made tuning,
  • Composition: APP
  • Processing: APP + RT + GIMP + add-ons (Linux)
  • Total exposure time minus defective light frames: 4h 36min.
  • Lights: 276
  • Calibration frames: Flats, Bias, Darks


Similar Articles


Leo Triplet

Old lights that I wanted to come back to, for a long time because I knew, that now I would process it better than almost

PekDar with a jedi sword

Light up the darkness

Thick fog and a powerful green laser allow you to “call” many interesting lighting effects. In the photos you can also see the detail of