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JWST data Eta Carina


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I've not done any processing for months now, so decided to download some data from the JWST website. I chose Eta Carina as it looked very colourful.

The process is quite complex. 6 folders are downloaded, each containing a fits file. All 6 fits are needed to combine into an RGB image. The fits are not star aligned or cropped, but that is the only processes I used on the data. No need for DBE or ABE with this data.

 

After combining, I did colour calibrate the image, as it turned out quite yellow. I partially stretched the image, then removed the stars with StarXterminator. Finished the stretching, then run the colormask script to adjust in curves. After curves a little LocalHistogramEqualization was used, then the stars reinserted. A final colour tweak was made in camera raw.

 

Carina_3.thumb.jpg.f94d8eb2707b71eeeb495d37e042e520.jpg

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9 minutes ago, AstronomyUkraine said:

I've not done any processing for months now, so decided to download some data from the JWST website. I chose Eta Carina as it looked very colourful.

The process is quite complex. 6 folders are downloaded, each containing a fits file. All 6 fits are needed to combine into an RGB image. The fits are not star aligned or cropped, but that is the only processes I used on the data. No need for DBE or ABE with this data.

 

After combining, I did colour calibrate the image, as it turned out quite yellow. I partially stretched the image, then removed the stars with StarXterminator. Finished the stretching, then run the colormask script to adjust in curves. After curves a little LocalHistogramEqualization was used, then the stars reinserted. A final colour tweak was made in camera raw.

 

Carina_3.thumb.jpg.f94d8eb2707b71eeeb495d37e042e520.jpg

Very nice Brian! 

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34 minutes ago, Sonyme said:

Are the dark centres of the 8 spike stars in the foreground a result of the JWT focusing method?     Fascinating image by the way Brian.   Gary

Yes. I should have cloned them out, but was just concentrating more on the combination and colour correction. The data does have flaws in it, especially the star spikes, but I'm sure these problems will be ironed out.

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43 minutes ago, TerryMcK said:

Interesting that they have made the data available to anybody. I've downloaded stuff from the Hubble project/archive in the past and had a play around.

All 5 targets the JWST released have got the data available for download. Despite being huge files, Pixinsight has no problems processing them.

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I was watching the Nasa feed when they released the initial data. One of the news video articles they included was the team who process the images. There are around 30 people and they were using PixInsight and Photoshop. So no fancy dancy software to produce the press released photos.

No doubt the data is also used with some bespoke software for scientific analysis. 

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