Daily Archives: September 19, 2014

Heart Nebula

The Heart NebulaIC 1805Sh2-190, lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing gas and darker dust lanes. The nebula is formed by plasmaof ionized hydrogen and free electrons.
The very brightest part of this nebula (the knot at the right) is separately classified as NGC 896, because it was the first part of this nebula to be discovered.
The nebula’s intense red output and its configuration are driven by the radiation emanating from a small group of stars near the nebula’s center. This open cluster of stars known as 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. The cluster used to contain a microquasar that was expelled millions of years ago.

Imaging telescopes or lenses: Takahashi FSQ-85EDX
Imaging cameras: Canon / CentralDS EOS 60D
Mounts: CGEM
Guiding telescopes or lenses: Borg 50 Achromat 50/250
Focal reducers: Takahashi .73X Reducer QE
Software: PixInsight, BinaryRivers BackyardEOS
Dates: Sept. 9, 2011
Frames: 15×480″
Integration: 2.0 hours

Author: Emanuele Todini
AstroPhotography of the day by SPONLI 19 Sep 2014