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New images of Jupiter

(www.missionjuno.swri.edu)
428 points 0xFACEFEED | 3 comments | 06 Nov 24 07:30 UTC | HN request time: 0.603s | source
1. youtubeuser ◴[06 Nov 24 15:09 UTC] No.42063478[source]▶
Maybe silly question, but why are the pictures cropped?
replies(2): >>42064480 #>>42071607 #
2. dr_orpheus ◴[06 Nov 24 16:12 UTC] No.42064480[source]▶
Not a silly question. I don't think the images are actually cropped. JunoCam is described as a "push broom" imager [0]. The camera takes pictures as the spacecraft turns. So it's more like you are looking at a stitched together panorama and not a cropped version of a larger image.

[0] https://en.wikipedia.org/wiki/JunoCam#Design

3. itishappy ◴[07 Nov 24 00:07 UTC] No.42071607[source]▶
Not silly at all! There's actually a lot more being done here than just cropping...

> The image is reprojected according to a preliminary geometrical camera model, cleaned from some of the camera artifacts, approximately illumination adjusted with a 3rd degree polynomial BRDF over the cosines of the incidence and emission angle

Check out the "Source Image(s)" link attached to each pic, it should give you a much better idea what the camera is actually seeing. Scroll to the bottom of the source image and you can see the different color channels as well as how it's interleaved for transmission. Here's the example I pulled that description from and it's source:

https://www.missionjuno.swri.edu/junocam/processing?id=17025

https://www.missionjuno.swri.edu/junocam/processing?id=JNCE_...