DSO's in 'Natural' Narrowband

[Andy01]

Imagine imaging DSO's with a One Shot colour camera but with the added detail of Narrowband. :)

Here we have my interpretation of a "natural" palette, with the Sii on a 'ultrared', Ha in red and Oiii in green and blue channels and with the star colours removed.

A lockdown project,using data from earlier this season, processing inspired by Jose Carballada (https://astro.carballada.com/).

Taken from my light polluted suburban backyard, Bortle 7 - Melbourne. :D

CARINA (https://www.astrobin.com/full/lrou8f/0/)
IC 2944 (https://www.astrobin.com/full/usirdf/0/)
M8 (https://www.astrobin.com/full/73xz9l/0/)
M42 (https://www.astrobin.com/full/iem4gi/0/)

[The_bluester]

Certainly provides for a very dramatic look to the images. One for me to try maybe once i finally get some clear sky again.

[JA]

Lovely images and colours Andy:thumbsup: You've been true to the respective wavelengths with that colour-scape. You could certainly call it natural-narrowband. Now if only our eyes could gather enough light and have such filters built-in.

Best
JA

[Nikolas]

ultrared?

[JA]

I suspect it might be like deep red, like a Wratten 29 photographic filter (a darker slightly brownish red) versus the more common Wratten 25a standard filter red somewhat brighter. That would certainly logically accord with respective colours for the wavelengths of S-ll and H-a, but it's dealer's choice so who knows?

Best
JA

[Andy01]

Clear skies? What is this strange phenomena of which you speak? :lol:



Indeed, but this will have to suffice until Skynet cyborg technology advancements are commonplace. :lol:





Essentially, in PS...
Sii >360
Ha >330
O3>200
With minor tweaks to taste. :D

[PKay]

Nice work as per usual Andy.

Thanks for sharing the processing :thumbsup:

[Startrek]

Andy,
Great images and nicely processed too
Very natural
Give Startools V1.7 a go for OSC or Mono narrowband
Ivo developed the Compose module I think about a year or two ago
Does a similar thing with “natural” narrowband, puts you in control of your colour processing with so many variables , presets and blends
He’s working on V1.8 at present and is in development stage
Cant wait for it to be completed
Cheers
Martin

[Peter Ward]

Very tidy resolution and contrast but the colour is too "interpretive" for my liking.

[Andy01]

Hi Peter, you're welcome, cheers. :thumbsup:



Thanks Martin. :)

I used to use Startools and quite liked the results, but when the Mac OS was upgraded, ST became too clumsy to access and constantly crashed, so I moved on to APP.

I also use PS everyday at the studio, so I'm unlikely to move to PI anytime soon either. :D



Thanks Peter. :)
FYI the three filter stacks have been assigned colours close to their actual bandwidths. ie: S2 672nm, Ha 656nm and O3 500nm. (see chart attached)

[gregbradley]

Sensational Andy. I really like them. The level of detail is amazing.

Greg.

[Peter Ward]

I suspect my response needs some explaining.
These are well known bright nebulae that are great to image.

They all have natural yet subtle colours that show the physical processes going on within them.

Adding "extra" intensity to a particular emission line can easily mask this.

There is no doubt that you've created an eye soothing set of images :thumbsup:
but to me, they are almost duo-colour, with all of the subtle star colours,
absorption and emission processes masked as a result.

So it comes down to whether you like accuracy/fidelity, art or popular appeal.

There are no rules....more a case of a rising tide (i.e. popularity) can float many boats.

[carballada]

really nice results!!!
you pushed the idea to the limit :) congratulations!!!!

I tried this palette as a consequence when the usual HOO or Hubble was named as "not natural" in any way by some colleagues. Really I am a fan of narrow band and tone mapping.

But I agree that when we use narrow band, it is never natural but with these parameters it tries to feel like regular RGB on asteroids!!

PD: thanks for the mention by the way

[matlud]

Very nice Andy �� Like the palette, might have to try something similar on my next project ��

[Nikolas]

"Essentially, in PS...
Sii >360
Ha >330
O3>200"


I'd like to see how this is done in Photoshop

[Bassnut]

mm, impressive detail and dramatic, but a bit duotonic?