NGC 3372 Carina with L Extreme Filter

[Startrek (Martin)]

Captured NGC3372 last night in suburban Sydney ( Bortle 8 ) using an Optolong L Extreme multiband filter for the first time
Moon 77% waxing
Neighbours backyard lights on all night both sides
Scope 6” f6 GSO Bintel newt ( fl 900mm )
Mount EQ6-R Pro
Imaging Camera ZWOASI2600MC Ascom controlled set at Highest Dynamic Range ( Gain 0 ) cooled to -12C
Baader MCCP Mk3 coma corrector
Goto and Nav EQMOD and Ascom Stellarium
Frame focus and Capture APT
PHD2 Multistar guiding ( first time using it ) 0.75 to 0.80 total rms
50 x 3 minute dithered guided subs
No darks
No flats
Stacked in DSS
Processed in Startools V1.7 OSC linear data set
Processing required very little noise reduction ( 2 pixels )

Original frame
Cropped versions to show detail

Comments welcome

[PKay (Peter)]

Awesome mate!

You have ticked all the boxes with this effort.

Very well done

[gregbradley]

Lots of detail. The salmony colour though is not that pleasant. Perhaps try to add some magenta back into the colour to get it back to that Halpha colour.

Greg.

[AG Hybrid (Adrian)]

Like your work Martin. I work with your son Anthony and he was showing me those exact pictures on his phone. Glad to see you here

[multiweb (Marc)]

Great details and FOV with good star profiles in that shot Martin. Nailed the focus and guiding. Top shelf.

[Nikolas (Nik)]

If you wanted to you could use astropixel processor and separate the Ha and O3 channels then combine them. the difference in colours is astounding.

[AdamJL]

Originally Posted by Nikolas

If you wanted to you could use astropixel processor and separate the Ha and O3 channels then combine them. the difference in colours is astounding.

we're still waiting for your tutorial on how to do this
I haven't forgotten!

On topic, fantastic work Martin. You're really getting great results with that camera, and your editing is coming along really well

[Startrek (Martin)]

Thanks All for your comments
Much appreciated

[Nikolas (Nik)]

Originally Posted by AdamJL

we're still waiting for your tutorial on how to do this
I haven't forgotten!

On topic, fantastic work Martin. You're really getting great results with that camera, and your editing is coming along really well

I'll see what I can do when I'm on Holidays

[Startrek (Martin)]

Originally Posted by gregbradley

Lots of detail. The salmony colour though is not that pleasant. Perhaps try to add some magenta back into the colour to get it back to that Halpha colour.

Greg.

Greg,
I spent some time reprocessing the image
Created a Star mask so stars wouldn’t be sampled
I chose Legacy in the Colour Module, only did minor tweaks to the Red , Green , Blue bias settings and adjusted saturation levels both colour , light and dark
Inverted Star mask and adjusted colour bias in Star field separately
Managed to expose reds , blues and a hint of green in the image now
Also adjusted contrast
Martin

Comments welcome

[AdamJL]

Colours are all opinions, but that's also much better to me, Martin. Great work

[RyanJones]

The repro looks great martin ! Well done !

[Startrek (Martin)]

Adam,
Thanks for sharing your workflow
I’m think the image has a lot more depth now

Ryan,
Thanks for your kind comment
Adam steered me in the right path so thanks to him
Also I now process narrowband with the stars excluded and process then at the end to achieve better and more accurate star colours
Got a good system running now especially with Startools version 1.7 , the best upgrade by far. Ivo is working on V1.8 but won’t disclose any details or date it might be released. The only request I made is to include a Star mask in the HDR module to mitigate Stars bloat when using either the Soft and Hard Optimise algorithms
Cheers
Martin

[CoolhandJo (Paul)]

The detail and latest colour rendition is fantastic.

[multiweb (Marc)]

The color repro looks very good. You have some terrific details in there. Good star profiles and color variety. Very good raw data and nicely processed. One for the poolroom.

[rustigsmed (Russell)]

nice work with the repro - looking good

[Startrek (Martin)]

Thanks Paul , Marc and Russell
Very pleased with the rework on this image as well
One point I’d like to make is you don’t have to spend a zillion dollars on a scope to produce reasonable images
My little 6” Bintel GSO newt only cost me $299 about 4 years ago. The primary mirror is a bit banged around but it does the job
Thanks again
Martin

[Robert_T]

great stuff Martin, the L extreme filter is a marvel... so good I stopped even paying attention to the presence of phase of the moon. You can pull quite a bit of (other than red) colour from many subjects as here and as per Nik's approach and others. For now I'm giving OSC a break while i experiment with mono and narrowband...whether it's worth the much greater complexity over OSC plus L extreme the jury is still out for me. Thanks for sharing and looking forward to seeing more from you and thiks great combo.

[Startrek (Martin)]

Originally Posted by Robert_T

great stuff Martin, the L extreme filter is a marvel... so good I stopped even paying attention to the presence of phase of the moon. You can pull quite a bit of (other than red) colour from many subjects as here and as per Nik's approach and others. For now I'm giving OSC a break while i experiment with mono and narrowband...whether it's worth the much greater complexity over OSC plus L extreme the jury is still out for me. Thanks for sharing and looking forward to seeing more from you and thiks great combo.

Thanks Robert
Very happy with how this image turned out
Yes I agree the OSC multiband filters have limitations and mono is the ultimate way to go but , I’m really enjoying this set up especially when the moons up in Sydney’s Bortle 8 light polluted skies
It’s a quantum leap from my old DSLR
Cheers
Martin

[Decimus (Richard)]

That first frame of NGC3372 is absolutely brilliant, Martin. Well done

Cheers,
Richard