Juno's Perijove-45 Jupiter Flyby, Reconstructed in 150-Fold Time-Lapse

2022-10-15 21:34 UT
Credit : NASA / JPL / SwRI / MSSS / SPICE / Gerald Eichstädt © cc by
Submitted By : Maquet-80
Mission Phase : PERIJOVE 45

NASA's Juno spacecraft successfully performed her Perijove-45 Jupiter flyby on September 29, 2022.

Closest approach to Europa was about 2022-09-29T09:38, closest approach to Jupiter was about 2022-09-29T17:10.

The movie reconstructs the 2 hours and 38.5 minutes between 2022-09-29T16:00:00.000 and 2022-09-29T18:38:30.000 of the Jupiter flyby in 150-fold time-lapse.

It is based on 36 PJ 45 JunoCam images, and on spacecraft trajectory data provided via SPICE kernel files.

In steps of five real-time seconds, one intermediate still image has been rendered from at least one suitable raw image.

Most of the still images of the final video are either simply blended between two intermediate still images, or additionally a composite of two such intermediate images, if a single intermediate image didn't cover the full rendered field of view.

Playing the stills with 30 frames per second results in a 150-fold time-lapse video.

In natural colors, Jupiter looks pretty pale. Therefore, the still images are approximately illumination-adusted before further post-processing, i.e. almost flattened, and consecutively gamma-stretched to the 4th power of square-root-encoded radiometric values, in order to enhance contrast and color.

Since the overall camera optics appeares to suffer from progressive radiation damage, which results in an overall reddening of the raw image data, this video uses overall white-balancing radiometric factors derived from the PJ44 TDI 1 RGB images.

Like for all its previous flybys, Juno approached Jupiter roughly from north, and left Jupiter looking towards the southern hemisphere.

Closest approach is moving northward with each orbit.

Many people at NASA, JPL, SwRI, and elsewhere have been, are, and will be required to plan and operate the Juno mission.