SH2-91 (Ha+OIII)

[AstroGS]

This was a target that I came up by lack while I was browsing the new images in Astrobin.

SH2-91 is part of the larger Cygnus Loop and a remnant of a supernova explosion that occurred around 10,000 to 20,000 years ago. It features intricate filaments and delicate structures that emit a striking glow, primarily in the Ha primarily wavelength, as well as OIII.

It took me just over 42 hours to capture Ha + OIII data of 600 sec subs, using the RedCat61 + ASI2600MM + Antlia 3nm Ha + Chroma 5nm OIII filters.

Processed in PI and PS. 

I am sharing the full size final image + a cropped one that I personally liked. Please feel free to add any comments or suggestions.

 

 

 is part of the larger Cygnus Loop and is

Edited Sunday at 15:13 by AstroGS

[AstroGS]

I actually re-worked it and combined it as an HOO - personally this looks more natural vs the previous ones.

Of course any suggestion or criticism is welcome 😉

 

Edited Sunday at 12:01 by AstroGS

[WolfieGlos]

Both renditions are great, nice detail in the whisps. 42 hours of 600s subs suggests this must be a pretty faint part of the Cygnus loop! Wow.

Usually I’m more for “natural” colour images but actually I really like the original rendition in this case too.

[AstroGS]

1 hour ago, WolfieGlos said:

Both renditions are great, nice detail in the whisps. 42 hours of 600s subs suggests this must be a pretty faint part of the Cygnus loop! Wow.

Usually I’m more for “natural” colour images but actually I really like the original rendition in this case too.

Interestingly, the 2nd rendition was not just a re-coloured version of the first but, I worked it from scratch, using the Gradient Correction process as well as the manual stretch process, which resulted better colour depth and a more 3D effect. It shows that both processing steps can make a huge difference in the final image.

 

p.s. of course the 2nd image is processed differently re the colours combination.