Here is the h-alpha channel:
Found in the constellation Cassiopeia.
-----------------------------------From Wikipedia:
The Heart Nebula, IC 1805, Sh2-190, 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 plasma of 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.
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Scope: Planewave 12.5" CDK
Camera: Apogee U16M (16803) w Gen II Astrodons
Mount: Paramount ME
Guiding: ST402ME / Astrodon MMOAG
Image capture: TSX and CCD-Commander
19x20min H-Alpha; 13x20min OIII
12/12/12x10min RGB
All calibration and pre-processing in PixInsight. RGB assembled in PixInsight. Blending of the H-Alpha and OIII into the RGB done in Photoshop
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Lucknow, Ontario
September, 2021