Printable Version of Topic

Posted by: Brian Swift Sep 18 2020, 04:16 AM

Mike, what is JNCE_2020259_29C00004_V01 testing?

Posted by: mcaplinger Sep 18 2020, 04:32 AM

It was supposed to be a Ganymede image, but since it didn't contain Ganymede they changed the title to reduce confusion.

Posted by: Brian Swift Sep 18 2020, 07:09 AM

Ganymede at 45pix/deg.

Upscaled versions at https://flic.kr/p/2jHGGyT

Posted by: Gerald Sep 18 2020, 05:47 PM

I thought that I should post a handful or two of pretty pictures for your and my recreation:

PJ29, #14

#19:


#20

Posted by: Gerald Sep 18 2020, 05:49 PM

#22:

Posted by: Gerald Sep 18 2020, 05:50 PM

#23:

Posted by: Gerald Sep 18 2020, 05:52 PM

Those images are post-processed examples of http://junocam.pictures/gerald/uploads/20200918/.

Posted by: Brian Swift Sep 23 2020, 01:34 AM

Cool bright spot in PJ29_32/34/35

https://flic.kr/p/2jKhFm5https://flic.kr/p/2jKhFm5 by https://www.flickr.com/photos/bswift/, on Flickr

Posted by: Kevin Gill Sep 24 2020, 03:47 PM

Some initial PJ29 detail images. With the perijoves becoming more northerly, we're getting clearer images of the northern filamentary region, though at the expense of sharp southern views.

I'm a little disappointed with the color I'm getting in the Northern latitudes, though my pipeline tends to white-balance the color channels, which I'm usually ok with (I'll leave the amazing true-color work to Bjorn)...

https://flic.kr/p/2jHAQhG
https://flic.kr/p/2jHAQhG


https://flic.kr/p/2jHBWaM
https://flic.kr/p/2jHBWaM


https://flic.kr/p/2jHCEcS
https://flic.kr/p/2jHCEcS


https://flic.kr/p/2jHPFtK
https://flic.kr/p/2jHPFtK


https://flic.kr/p/2jJBzpZ
https://flic.kr/p/2jJBzpZ


https://flic.kr/p/2jJW9aH
https://flic.kr/p/2jJW9aH

I'm particularly interested in this kidney bean shaped feature here:
https://flic.kr/p/2jJWsT9
https://flic.kr/p/2jJWsT9

Posted by: Kevin Gill Sep 24 2020, 03:49 PM

And two fish-eye 'marble' composites so far:

https://flic.kr/p/2jHWd2W
https://flic.kr/p/2jHWd2W


https://flic.kr/p/2jKAcax
https://flic.kr/p/2jKAcax

Posted by: Sean Sep 24 2020, 06:00 PM

Beautiful work Kevin, the Jupiter 'marbles' are my favorite Juno compositions.

Posted by: Bjorn Jonsson Sep 24 2020, 07:58 PM

I've been getting color in the northern PJ29 images that I consider a bit suspicious. I'm therefore going to revisit some of the color tests/calibrations and among other things compare the PJ29 color to earlier images. So I'm very curious to know what you are disappointed with. Does your pipeline white-balance the images/color channels differently in different images or do you multiply the R/G/B values with the same fixed values for all of the images?

Posted by: Kevin Gill Sep 24 2020, 08:26 PM

My process uses the same values and conversions for every image, such that I can output close to true color on the output side if I wanted to. But I tend to just use a proportional stretching method when I convert from the ISIS3 cubes to tifs which in effect white balances them (though not on any specific value white). I've done rather little to validate the 'true color' output, so I don't really use it.

Posted by: Gerald Sep 26 2020, 02:04 PM

http://junocam.pictures/gerald/uploads/uploads_by_pj.html I've uploaded thus far.
I might update that link list occasionally if time allows, probably also with links to other PJs.