NGC3372 (Carina Nebula) [NB Alt Version] (Dean Carr)

Celestial hemisphere: Southern · Constellation: Carina (Car) · Contains: Foramen · NGC 3372 · eta Car · eta Car nebula

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NGC3372 (Carina Nebula) [NB Alt Version]

Powered byPixInsight

NGC3372 (Carina Nebula) [NB Alt Version]

This alternative version of my image of the Carina Nebula was created simply for discussion with fellow astroimagers, and not as a mainstay of my gallery. I am not really a fan of the colors in this version, but ....

Question: What palette was used to color-combine Ha, OIII and SII data to create this image?

Answer: It was color-combined using exactly the same palette (and data) as my main version of the image (also on Astrobin) - the Hubble Space Telescope (HST) palette.

However, this image was processed slightly differently to obtain a very different (and unusual) result. Instead of balancing the histograms (which I would typically do), an image with starkly different hues was produced by stretching the RGB channels differently. This should be obvious, but I thought it was interesting to highlight that, although the palette used to assign narrowband image data to RGB channels is very important, so too is how you process – and how adamant you may or may not be about balancing the histograms of narrowband images.

Standard Text:

NGC 3372, also known as the Eta Carina Nebula, is a large, complex and very bright nebula approximately 6,500 to 10,000 light years away in the constellation of Carina.

This image was processed in PixInsight using the Hubble Space Telescope (HST) palette (Red = SII, Green = Ha, Blue = OIII), with a synthetic luminance blended from all three colour components. It has been drizzle integrated to increase resolution to approx. 0.6 arcsec/pixel.

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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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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	2549528
PixInsight job	BP3SKQID1D01EOMYVJ4JZW2FEJLRGDQP
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	10h44m26s.359
RA (top/left)	10h41m09s.533
RA (top/right)	10h41m06s.193
RA (bottom/right)	10h47m49s.777
RA (bottom/left)	10h47m40s.470

Dec (center)	-59°37′17″.28
Dec (top/left)	-59°04′06″.46
Dec (top/right)	-60°10′27″.57
Dec (bottom/right)	-60°10′09″.26
Dec (bottom/left)	-59°03′48″.79

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NGC3372 (Carina Nebula) [NB Alt Version]

NGC3372 (Carina Nebula) [NB Alt Version]

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NGC3372 (Carina Nebula) [NB Alt Version]

NGC3372 (Carina Nebula) [NB Alt Version]

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