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Unmanned Spaceflight.com _ Juno _ Juno perijove 46

Posted by: Bjorn Jonsson Nov 7 2022, 11:08 PM

I noticed this interesting description of the PJ46 JunoCam imaging at the Juno website:

QUOTE

We are collecting more methane images than usual. A lot of data volume is planned for lossless compression images to avoid compression artifacts.

This is going to be interesting and should result in considerably better images, at least in relatively dimly lit areas.

Posted by: StargazeInWonder Nov 8 2022, 03:48 AM

I don't know if the uncompressed images will be used for all filters, but a methane filter is very narrow and most of Jupiter is pretty dark with one, so sending uncompressed images will be particularly helpful for the methane images.

Posted by: Brian Swift Nov 9 2022, 03:12 AM

QUOTE (Bjorn Jonsson @ Nov 7 2022, 03:08 PM)

I noticed this interesting description of the PJ46 JunoCam imaging at the Juno website:

This is going to be interesting and should result in considerably better images, at least in relatively dimly lit areas.

Images started showing up at about 6:25 PST tonight.
I see 9 HUFFMAN in the color images I've downloaded so far, which are in range PJ46_75 to PJ46_136.

Edit: Looks like rest of images are in approach/departure "movie" collections which don't contain additional HUFFMAN compressed images.

And here is PJ46_116 (crop exaggerated color/contrast)

Posted by: Brian Swift Nov 9 2022, 08:01 AM

Jupiter PJ46_87 Crop (North Pole at Minimum Emission Angle image)
Exaggerated Color/Contrast acquired from 22658 km at 2022-11-06T21:17:18
This is from one of the HUFFMAN compression images.

Posted by: Kevin Gill Nov 9 2022, 03:43 PM

First pair of processed images from Perijove 46. I used two different processing pipelines for each. Both were then put through the normal wringer of Photoshop, Topaz SharpenAI, and Lightroom.

This one was processed with my traditional USGS ISIS pipeline:
https://flic.kr/p/2nYdRpk
https://flic.kr/p/2nYdRpk

This one was processed using my newer simplified pipeline:
https://flic.kr/p/2nYbrvo
https://flic.kr/p/2nYbrvo

Posted by: Brian Swift Nov 10 2022, 12:43 AM

GRS Images (Exaggerated Color/Contrast) acquired over 60 minutes from Juno PJ46 approach.
Altitude Range 600395 to 537090 km

And GRS on Limb from 67980 altitude. PJ46_119.

Posted by: Brian Swift Nov 10 2022, 02:31 AM

PJ46 Overview (reduced resolution, Exaggerated Color/Contrast)

Full resolution image at https://www.missionjuno.swri.edu/junocam/processing?id=14378