Reprocess NGC 3372 Carina Outer Regions (Martin Dowd)

Celestial hemisphere: Southern · Constellation: Carina (Car) · Contains: Carina Nebula · NGC 3372 · The star w Car · eta Car Nebula

Reprocess NGC 3372 Carina Outer Regions, Martin Dowd

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Reprocess NGC 3372 Carina Outer Regions

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Reprocess NGC 3372 Carina Outer Regions

Since I’m isolating with a 2nd round of COVID ( First time was Dec 2022 and yes unfortunately it’s still active in our community) I decided to re process my Carina image which did provide some subtle improvements. Star color is more uniform with red / blue outer halos now reduced / removed on small to medium size stars. Spatially Variant PSF Deconvolution ( SV Decon ) did work better this time than basic Synthetic mode. Also Improved contrast and brightness in the final image.

For those who use Startools ( I’d guess most folk use APP, PS and Pi etc… ) here’s my basic workflow for this reprocess

Startools V1.8
Compose L + Synthetic L from RGB
Exposure Sliders Sii 9720 sec
Ha 11400 sec
Oiii 9270 sec

AutoDev inspection
Bin 72%
Crop edges ( final size 4200 x 2600 approx )
Wipe NB dark anomalies 2 pixels
AutoDev default with ignore fine detail 2pixels ( no ROI )
Contrast default with reduced shadow detail size 2 pixels
Sharpen default
SV Decon sampled ( 8 samples ) iterations 12 , increased de ringing parameters to soften coalesced stars in white nebulous areas ( sort of worked ok )
Superstructure brighten gamma 0.25 Power of inverse 100% linear brightness mask
Color SHO preset using following matrix ….
SHO 50Sii+50Ha,50Ha+50 Oiii, 100 Oiii
Adjusted saturation and bias to taste
Shrink Tighten iterations 10 , color taming 10 pixels , halo extend 2 pixels
De Noise 4 pixels
Save

Comments welcome

Thanks for looking

Clear Skies
Martin

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Status	Basic success
Started	...
Astrometry.net job	9639399
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Reprocess NGC 3372 Carina Outer Regions

Reprocess NGC 3372 Carina Outer Regions

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Reprocess NGC 3372 Carina Outer Regions

Reprocess NGC 3372 Carina Outer Regions

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