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The Pelican Nebula, IC5070, George  Yendrey
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The Pelican Nebula, IC5070

Getting plate-solving status, please wait...
The Pelican Nebula, IC5070, George  Yendrey
Powered byPixInsight

The Pelican Nebula, IC5070

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Description

Revision 12/03/2022
My final revision is a 'true' HOO palette version of The Pelican Nebula.  The HOO version is much closer to what the human would see (but much more detail/brighter) if they were in a spaceship close enough for naked eye seeing.  There is no luminance data in this version as the Lum image adds nothing that is not available in greater detail in the Ha image.
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This is only my second attempt on this object, the Pelican Nebula.  It was the very first DSO that I imaged with my then brand new SW Esprit 100ED OTA and SW EQ6R Pro mount in June 2020.

The revision posted utilizes a revised algorithm to create RGB stars from narrow band Sii, Oiii, and Ha images sets.  The improved algorithm was provided by Astrobin User Uwe Deutermann, many thanks for his suggestions!  I also tweaked the image a bit more to give it more pop.

Revision C and D (also posted) provides a view of the uncropped image.  The primary/final uncropped version provides the full fov of the OTA w/ASI2600MM imaging train.

This time, it is a monochrome imaging project, using the same Esprit 100ED OTA, but a very evolved rig from that first Astro imaging session with a telescope.  Prior to that first attempt, my imaging had strictly been extreme widefield with a 35mm camera, 14mm lens sitting propped on the ground, shooting the Milky Way.  ;-)

There were only two nights of imaging, not great seeing, and travel precluded any further attempts this year.  So, the data set is not as large as I'd like for this target, but there is always next year.  The Cygnus region is a huge nebula cloud region; extreme widefield imaging reveals that the North American and Pelican Nebula are just two of identifiable 'formations' in this huge complex.

This is a narrow band LSHO image.  Processed in PixInsight, most of the heavy lifting was performed by PixelMath operations to process and blend the individual narrow band data sets.  In honesty, there is so little Sii data in the Pelican Nebula that it only contributed a highlight to the edge of head of the Pelican.  This target, for narrow band, would benefit from additional data, particularly the Sii since that is so weak in this target.

I am amazed at the low noise in the monochrome data sets as compared to that in my previous OSC image sets.  It makes post processing much easier, IMO.  YMMV.

Revision 11/30/2022
I found some issues with my calibration frames so I decided to reprocess IC 5070, The Pelican nebula with the new PixInsight tools, as well as utilize a slightly different approach to implementing the Hubble (SHO) palette.  I think noise was even less than in the previous attempt and I found that it was easier to preserve the dimmer/less visible nebual clouds that surround IC5070.  Another 'feature' of my newer method (copied from several  YouTube demos) was to use color masks to bring the color 'alignment' into one more pleasing to my eye.  One effect of this was the presence of blue in the image.  Previously, I had to really push to bring out the blue, now it is everywhere.

Let me know what you think!!!

From Wikipedia:
The Pelican Nebula (also known as IC 5070 and IC 5067) is an H II region associated with the North America Nebula in the constellationCygnus. The gaseous contortions of this emission nebula bear a resemblance to a pelican, giving rise to its name. The Pelican Nebula is located nearby first magnitude star Deneb, and is divided from its more prominent neighbor, the North America Nebula, by a foreground molecular cloud filled with dark dust. Both are part of the larger H II region of Westerhout 40. The Pelican is much studied because it has a particularly active mix of star formation and evolving gas clouds. The light from young energetic stars is slowly transforming cold gas to hot and causing an ionization front gradually to advance outward. Particularly dense filaments of cold gas are seen to still remain, and among these are found two jets emitted from the Herbig–Haro object 555. Millions of years from now this nebula might no longer be known as the Pelican, as the balance and placement of stars and gas will leave something that appears completely different

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The Pelican Nebula, IC5070, George  Yendrey