IC1805 - The Heart or Valentine Nebula - LLHaRGB


Found in the constellation Cassiopeia. 

Click HERE to see the same image above as a pure RGB image.

Click HERE to see the pure RGB image enhanced with ONLY the additional unfiltered Luminance data.

Click HERE to see the pure RGB image enhanced with ONLY the H-Alpha data (i.e. no Luminance)


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.


Apogee U16M camera w 5nm Astrodon GenII H-Alpha filter
Takahashi FSQ Refractor w Robofocus 
15 x 20 min H-Alpha taken using an STL11000 camera on the same scope
11 x 5 min unfiltered Luminance
5 x 5 min RGB
Paramount ME guided w ST-402 and eFinder
Image acquisition in CCDSoft5
Calibration, Alignment and Sigma Reject combine in Maxim
Levels, Curves, selective sharpening and some minor noise reduction in PS CS4

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Flesherton, Ontario
Aug 6/7, 2010