Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  27 Cas)  ·  IC 59  ·  IC 63  ·  The star Navi (γ Cas
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IC 59 & IC 63 - Ghost Nebula - HaHOO + RGB stars, patrice_so
IC 59 & IC 63 - Ghost Nebula - HaHOO + RGB stars
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IC 59 & IC 63 - Ghost Nebula - HaHOO + RGB stars

Getting plate-solving status, please wait...
IC 59 & IC 63 - Ghost Nebula - HaHOO + RGB stars, patrice_so
IC 59 & IC 63 - Ghost Nebula - HaHOO + RGB stars
Powered byPixInsight

IC 59 & IC 63 - Ghost Nebula - HaHOO + RGB stars

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Description

I am happy to share this HOO composition based on OSC dual narrowband data. Processing this object is challenging because the bright star produces a strong halo in the Oiii band. This was overcomed it by using the Ha layer as luminance. This allowed for getting rid of the halo while keeping a nice relief on the nebulae.
This object would benefit from a strong RGB basis with only light Ha addition because the blue color you can see in other images of this nebulae is indeed a reflexion of the light coming from the bright star. The Oiii line of the l-ultimate ignore it almost completely. I planned to dedicate a clear night without moon to that, but that did not make it to my priorities yet. I am non the less quite happy with that result.

As alway, any hint for improvement most welcome ! Clear skies !

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IC 59 & IC 63 - Ghost Nebula - HaHOO + RGB stars, patrice_so