Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Cocoon Nebula  ·  IC 5146
The Ruby Jewel of Cygnus: Cocoon Nebula (Ha-LRGB), Dark Matters Astrophotography
The Ruby Jewel of Cygnus: Cocoon Nebula (Ha-LRGB)
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The Ruby Jewel of Cygnus: Cocoon Nebula (Ha-LRGB)

The Ruby Jewel of Cygnus: Cocoon Nebula (Ha-LRGB), Dark Matters Astrophotography
The Ruby Jewel of Cygnus: Cocoon Nebula (Ha-LRGB)
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The Ruby Jewel of Cygnus: Cocoon Nebula (Ha-LRGB)

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Description

This is one of the first objects I tried to image when I was still imaging from the yard, and with my Edge 8" SCT I had at the time. The data was fairly bad, so bad I do not have it any longer. I made another attempt, this time wide-field, with an FSQ setup I had and that data was completely ruined by smoke in the sky from wildfires that year. After that I never tried to image it again.

Fast forward to the New Mexico system, and I decided the time was right to try the Cocoon again. While I am happy I did, processing this monster was a much taller task than I thought it would be. There is so much dust in the area at different levels of faintness, and I wanted to try and get as much of it as I could from the data I had. Thus, after a good 10 or so runs at the data, I was finally able to produce a decent image in LRGB. The next task was to integrate the HA data cleanly, and to ensure that I was only transferring any of the obvious signal in the Cocoon and only the additional diffuse hydrogen that was caught in the HA subs. This, took a lot of trial and error to get just right. Thankfully, I was able to arrive at something I think is a good representation of the data.

As for the object itself, the field framed like I have it here looks like a meteor crashing down in the sky, with the diffuse HA acting as the ejecta for the impact event, and the dust trail acting as the path the meteor took. There are a lot of stars in this region, which is not surprising given this target is in Cygnus. The field has a lot of interesting additional objects in it, like the blue-ish reflection nebula very close to the Cocoon. Overall, I am very pleased with the image and from a certain point of view -- happy to be done working on it!

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The Ruby Jewel of Cygnus: Cocoon Nebula (Ha-LRGB), Dark Matters Astrophotography