StarTools

Startrek wrote: ↑Tue Mar 14, 2023 1:32 am NGC 3324 Gabriela Mistral Nebula is located in Carina and forms one of the outer arms of this huge emission nebula in the Southern Hemisphere.
This nebula was named after the famous Latin American ( Chile ) author who was the first woman to receive a Nobel Prize for Literature.
The Antlia ALPT 5nm OSC Dualband filter performed extremely well again under Bortle 7-8 City suburban skies and a Full Moon
Captured over 2 nights
6” f6 GSO Newtonian Reflector
Skywatcher EQ6-R mount
ZWO 2600MC cooled to -10C , Gain 101 Ascom
TS Optics GPU coma corrector
Antlia ALPT 5nm OSC dualband filter
150 x 2min dithered guided subs
2 x 40 Flats
60 x Bias
EQMOD and Ascom Stellarium Goto and tracking
APT for Capture
PHD2 Multistar guiding ( 0.45 to 0.55 arc sec total )
Stacked in DSS
Processed in Startools V1.8
Data set loaded via Compose ( OSC / DSLR Bi Color )
Color Scientific and 50/50 Layering CIELab
SHO matrix presets , a few versions
I didn’t apply Super structure ( Brightness) this time to keep the fine detail intact
Although I did use Superstructure ( Isolate ) but selected brightness retention Local Median at 50% strength, which dimmed interstellar background and Star field slightly but retained detail in the main structures.Isolate “default” is way too aggressive.
Happy with the final result

Astrobin link here

https://www.astrobin.com/vthsv9/

Comments welcome
Thanks

Stefan B wrote: ↑Tue Mar 14, 2023 11:14 am Great as usual, Martin! Nice depth and good dynamic range I am always impressed what you are able to achieve even under heavy LP and bright moon. I wouldn't even bother setting up...

I like the first color palette. Do you remember which one it was ?

Regards
Stefan

Mike in Rancho wrote: ↑Tue Mar 14, 2023 5:14 pm Very good again, Martin.

And nice framing as well. On this one, interestingly I am actually liking the middle rendition, which seems closer to a classic HOO coloring. It seems to be displaying the best variation of colors and blended shades so as to see the differing detail better. Though of course, it's possible your other mappings could do the same with a few adjustments to the bias sliders.

And while it's also possible that bicolor may be the best choice at times, it also seems to me that down there you are overrun with targets just begging for tricolor SHO.

admin wrote: ↑Tue Mar 21, 2023 5:49 am The balancing of the emissions is excellent in these images. A great use of color contrast to show relative emissions.