M33 - LHaRGB (Rodolphe Goldsztejn)

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: IC 131 · IC 132 · IC 133 · IC 135 · IC 136 · IC 137 · IC 142 · IC 143 · M 33 · NGC 588 · NGC 592 · NGC 595 · NGC 598 · NGC 604 · Triangulum Galaxy · Triangulum Pinwheel

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M33 - LHaRGB

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M33 - LHaRGB

One of the first targets I aimed to when I acquired a second-hand AP 130 EDFS, back in August this year.

I'm quite pleased with the outcomes.

Not abele to judge the overall color balance, but it looks good to me.

Comments are welcome.

B

Description: Re-re-re nouvelle version

Uploaded: ...

C

Description: Pas de Ha cette fois-ci...

Uploaded: ...

D

Description: Star reduction

Uploaded: ...

E

Description: Less agressive processing

Uploaded: ...

F

Title: Lighter processing, softer and more natural aspect

Description: Processed using the following steps:

Starting from R, G, B, L and Ha integrated frames:
* Channel combination R, G, B --> RGB
* DBE on RGB, L and Ha
* Solve RGB
* SPCC on RGB
* BXT on RGB, L and Ha
* GHS on RGB, L and Ha --> non-linear from this step
* ChannelCombination RBG + L (HSI, I channel for the luminance) --> preserves colors, leads to LRGB
* SXT on LRGB and Ha --> Starless and stars for both images

On starless Ha and LRGB:
* Continuum substraction from Ha (R channel of LRGB)
* LRGB Ha mix using PixelMath on the R and B channels (boost factors: 0.55 on R and 0.05 on B) --> L-(HaR)GB
* NXT on L-HaRGB
* LHE on L-HaRGB (large scale)
* UM on L-HaRGB (small scale)

Final steps
* Merge LRGB stars back in starless L-HaRGB (screen method)
* Reduce stars with PixelMath (use starless L-HaRGB)
* Apply light NXT
* Save and export to TIFF 16bits

Final touches (contrast, vibrance, etc.) in LightRoom

Uploaded: ...

G

Title: New presentation: reprocessed from the ground up with xxxTerminator processes and post-processed with Affinity

Uploaded: ...

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Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	4116818
PixInsight job	GDBC67DBYK2WA2I8THYO51MRB20NHX5G
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	01h33m58s.42
RA (top/left)	01h36m01s.59
RA (top/right)	01h35m58s.00
RA (bottom/right)	01h31m53s.71
RA (bottom/left)	01h32m00s.80

Dec (center)	+30°38′04″.6
Dec (top/left)	+30°03′16″.7
Dec (top/right)	+31°13′33″.8
Dec (bottom/right)	+31°12′45″.8
Dec (bottom/left)	+30°02′27″.9

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M33 - LHaRGB

M33 - LHaRGB

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Image Index:

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M33 - LHaRGB

M33 - LHaRGB

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E

F

G

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