Juno Perijove 47 |
Juno Perijove 47 |
Dec 17 2022, 11:38 PM
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#1
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Member Group: Members Posts: 403 Joined: 18-September 17 Member No.: 8250 |
CK kernels not posted to NAIF yet. I wonder if raw image data is down. <Insert impatient sonic hedgehog gif>
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Jan 18 2023, 11:08 PM
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#2
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
This is image PJ47_90 in approximately true color/contrast and enhanced versions:
The color accuracy in the dimly lit areas is almost certainly significantly lower than in brighter areas farther from the terminator and/or closer to the equator. BTW I noticed that some of the PJ47 southern hemisphere images are extremely noisy. My software automatically removes spikes but doesn't do it very aggressively. I used to consider images where the software removed ~5000 spikes as very noisy but for image PJ47_113, about 25,000 spikes were removed. I am fairly sure that this is (by far) the largest number I have seen. I have been experimenting with processing the raw images in Photoshop *before* running them through my regular processing pipeline. This seems to help. Filter -> Dust & Scratches seems to work well whereas Filter -> Median is too aggressive for my taste (the raw image becomes too smooth and even 'contoured'). The images continue getting redder. I now multiply blue with >4 relative to red. For comparison, for the early orbits I was using a value close to 2.5. |
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