[PlayRaw] Processing Junocam images of Jupiter

One of the instruments on the Juno mission to Jupiter is the Junocam - the camera that is photographing Jupiter. The images are in the public domain and the Junocam website features a Processing gallery where the “raw” images are available. In addition, folks can upload to the site their own processed versions of the images.

Here is a shot of an image for people to experiment with.

I’ve already stacked the RGB channels for the full size version in a tif that can be downloaded from here: https://www.jimplaxco.com/wp-content/uploads/2018/11/JNCE201830216C00026V01RGB8bit.tif

I’d love to see people’s different approaches to processing the image.

Image License: PUBLIC DOMAIN: https://wiki.creativecommons.org/wiki/Public_domain

The Junocam processing gallery is here: https://www.missionjuno.swri.edu/junocam/processing?id=5991


A slightly psychadelic take, bringing out excessive details and colors, in Rawtherapee. Color and detailizing effects achieved with white balance, contrast, LAB color effects, HSL, and wavelets. I also used the defringe tool, as the registration between color channels didn’t seem to be quite on point.

Here is the sidechain file,
pretty planet-2.jpg.out.pp3 (12.3 KB)

Now here is the picture:

Edit: My edit originally didn’t look good with the white Pixls background.


Wow @JimPlaxco. This is fun! Here is my take using RawTherapee. I also uploaded it to Juno website!! Thanks for the link and sharing your efforts.
JNCE201830216C00026V01RGB8bit.jpg.out.pp3 (11.5 KB)

Then had it go through the GIMP machine!

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Do you know if there is a description what the Raw file (The file with the stripes.) contains.

Fun pic, here’s my take


JNCE201830216C00026V01RGB8bit.tif.pp3 (13.9 KB)
JNCE201830216C00026V01RGB8bit-2.tif.pp3 (12.6 KB)

Reference colors from:



Hi Tobias,

Junocam’s camera is of the push-frame variety. That means that rather than taking a single photo of a scene, it actually creates a single photo by combining multiple strips of “exposures” or scans. So if you want to truly process the “raw” images you’d also need to deal with the geometry of combining the individual strips into their single image. Personally I’m happy to skip that part and focus on processing the final composite image - which itself is pretty challenging.

I should point out that Junocam’s images all have a brownish-yellow color cast to them. For me, eliminating that while boosting the other colors has been a real challenge. I did write about processing Junocam images back at the start of the year: Image Processing and the Juno JunoCam which you may find useful if you want more background on the subject.

Anti-aliasing and grain in gmic, 16:9 framing and more contrast


Great work age. I’m currently using that image as a desktop wallpaper.

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Tone curve and some sharpening in darktable, cropping and changing the canvas size in gimp.

JNCE201830216C00026V01RGB8bit(1).tif.xmp (2.1 KB)


The space dolphin



Ah ha - so its not just me who saw that dolphin shape. I didn’t even know there was a web page about it. Thanks for sharing the link

Yes, I also “saw” it. Funny!

All kinds of things in RawTherapee 5.4-dev: Dehaze, Soft Light, Gradient, RGB levels, color channels. Nothing by way of sharpening or wavelet enhancement.

JNCE201830216C00026V01RGB8bit.tif.pp3 (11.3 KB)


My version with just Gimp and the curve tool.
And I added the small moon from the Raw file.


Btw. here are two interesting links with information about the raw files:

My planet dropped and it’s looking funny, can someone fix it?


I was not particularly preoccupied with the colour or details this time. Just wanted to provide a nice presentation of Jupiter. I typically use image stats to process the photo; however, the black and fringe presented a unique challenge. I had to go back and forth between the mask and the original and masked images. Likely much easier with a GUI, oh well… :man_shrugging::woman_shrugging:

1. gmic → generate mask A → mask out black, fringes B → extract region C → gather stats C → adjust brightness, contrast (curves) B → crush blacks, soften edges A B → rotate → crop → frame → sharpen (LoG) → resize

Zoom 100% and enjoy!


JNCE201830216C00026V01RGB8bit.tif.pp3 (12.0 KB)

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This was fun, something completely different.

JNCE201830216C00026V01RGB8bit.tif.xmp (12.5 KB darktable 2.6.2)