IC1805 - The Heart or Valentine Nebula - HaRGB


Here is the h-alpha channel:

IC1805 aka The Heart Nebula in H-Alpha

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.


Scope: AP155EDF w Focus Boss II
Camera: Moravian G4 (16803) w Gen II Astrodons
Mount: Paramount MX
Guiding: ST402ME / Borg 60mm achromat
Image capture: TSX and CCD-Commander

84x20min H-Alpha (across two panels) i.e. 28 hours
112x10min RGB (across two panels) i.e. 18+ hours

All calibration and pre-processing in PixInsight. RGB assembled in PixInsight. Mosaic created in PixInsight. Blending of the H-Alpha into the RGB done in Photoshop

Click on the image to have your browser resize it for your screen.
Lucknow, Ontario
September, 2020