The Eastern Veil processed with 1.8.5

[RickS]

The Eastern Veil in narrowband with a little RGB in the stars.

Captured at SRO, June-July, 2017

Objects in image:
  NGC6992, NGC6995, IC1340

Scope: Ceravolo C300 @ f/4.9 = 1470mm FL
Mount: AP1100
Camera: FLI PL16803
Focuser: Atlas
Filters: Astrodon
Guiding: Lodestar II / Tak guide scope
Image scale: 1.26 arcsec/pixel (Drizzled to double res)
Exposures: 48x300s R, 52x300s G, 37x300s B, 27x1800s Ha, 31x1800s Oiii, 32x1800s Sii (56.4 hours)
Processing: PixInsight 1.8.5

Acquisition credit: Scott Johnson, Augusto Hernandez, John Kasianowicz, Daniele Malleo, Jose Mtanous and Rick Stevenson
Processing credit: Rick Stevenson

[edif300]

Beautiful image!!

CS
I.

[RickS]

Thanks again, Iñaki 

[Ryderscope]

Hi Rick, when you say that you have added some RGB into the stars - is this achieved by processing the RGB data seperately and then adding this into the narrow band data using pixel math and a star mask overlay?

[RickS]

Hi Rick, when you say that you have added some RGB into the stars - is this achieved by processing the RGB data seperately and then adding this into the narrow band data using pixel math and a star mask overlay?

Hi Rodney,

I processed the RGB data without too much care apart from the star colours.  Then I extracted the L*, a* and b* from the NB image and the a* and b* from the RGB.  I applied a star mask to the NB a* and b* and used PixelMath to blend the a* and b* from the RGB channels into the corresponding NB channels.  Then I recombined the L* and blended a* and b* to make the final image.  Effectively, I blended the colour from the RGB image into the NB image through a star mask while retaining the original Lightness (and star profiles).  Hope that makes sense. It's probably easier to do than explain

Cheers,
Rick.

[msmythers]

And Rick just to be clear as I did not see this in your post I would think you made the star mask from the NB data and not the RGB in order to keep the NB star profiles.


Mike

[RickS]

And Rick just to be clear as I did not see this in your post I would think you made the star mask from the NB data and not the RGB in order to keep the NB star profiles.

That's correct, thanks Mike.

[Ryderscope]

Thanks Rick and Mike for clarifying that for me. Will step through this approach when next I venture into NB.