"The Eastern Veil nebula (also known as Caldwell 33) is a cloud of heated and ionized gas and dust in the constellation of Cygnus and is located at around 1470 light-years from Earth. It is part of the Cygnus Loop which is a faint supernova remnant that exploded aproximately 7000 years ago. From the moment the source star exploded and until now, the Cygnus Loop supernova remnant expanded to a diameter of roughly 3° on the sky (that almost 6 full moons). The red hues in this image are from ionized hydrogen content of gas clouds that emit light in the H-alpha wavelength, while the cyan hues are from oxygen ions." https://skyandtelescope.org/online-gallery/the-eastern-veil-nebula/

A little project pending since August last year that finally I could process this days.

The session with filter LPro  was done a stack and with the filter Extreme sessions a stack apart in DSS and Siril. Also getting the Ha and OIII extracted. Then a stretch and arcsin curves and gradient. The starless version with both programs Starnett V2 and StarXterminator, finish the clean on the images, combined them, apply  denoise 6 point and no sharp, 10 back details and 20 color correction.  On Cam Raw the final touch with clarity, dehaze, white, some extra local noise, some extra local clarity, and Hue colors obtain two versions, normal bicolor red/blue and SHO Hubble palette.

With the extraction, I done other version in HOO, that was combined with the starless image worked bicolor and SHO.  Then blend the HOO with each, using also Ha as luminance and incorporating the L-Pro stars for the final image of the two main final images.

 I'm playing around with several workflow all the time...

This part of the Veil Nebula is also as fascinating as the Western one.  The myriads of stars in that region is just impressive.  I have a bit of trouble trying to reduce them at the point for to see better the structure of the nebula without disturbing the total vision of it.

We hope you like the result.

Processed April-May 2022

https://twitter.com/AstroOtus/status/1524405879524794376