Tessera
Folgen

Björn Jónsson

@bjornjonsson.bsky.social

Software engineer interested in solar system exploration + many other things. Advanced amateur planetary image processor. Ruler of several non-existent planets.

70 Posts1484 Follower136 Folgt
Simeon Schmauß@stim3on.bsky.social · 5mo ago

Here is my reprocessed version of the Juice NavCam images of comet 3I/Atlas taken last November shortly after it's closest approach to the sun. 🧪🔭 For this animation I removed the static noise and aligned the images to the nucleus. Credit: ESA/Juice/NavCam Processing: Simeon Schmauß CC-BY-SA

European Space Agency@esa.int · 5mo ago

In July 2025, interstellar object 3I/ATLAS entered our Solar System. ☄️ Our Jupiter Icy Moons Explorer – Juice – happened to be in the right place, with the right equipment, at the right time to see it. Here's the full story 👉 www.esa.int/Enabling_Sup... @science.esa.int @operations.esa.int 🧪🔭

Daniel Machacek@danielmachacek.bsky.social · 5mo ago

Seasonally recurrent annular cyclone on Mars in processed images from newly released data from the EXI camera system onboard the Hope probe (EMM - Emirates Mars Mission). The images were taken on August 7, 2025 between ~12:30 and 18:10 UTC. Credit: Emirates Mars Mission (EMM)/EXI/D. Machacek.

Two color images of the crescent of Mars with a cyclone near the north polar ice cap at the top of the image. The images were taken on August 7, 2025 at 12:30 and 14:20 UTC. Two color images of Mars with a cyclone near the north polar ice cap at the top of the image. Also visible in the center of the images are the three large volcanoes of Tharsis Montes and Olympus Mons volcano. The images were taken on August 7, 2025 at 16:18 and 18:10 UTC.
ESA Space Science@science.esa.int · 5mo ago

🧃 Juice update! 👩‍💻 Science teams are busy analysing the 3I/ATLAS data received from five Juice science instruments ☄️ They're also looking forward to a star occultation by Jupiter’s moon Kallichore on 18 March, which could refine its known position – valuable data for a possible 2031 flyby. 1/2 🔭🧪

Screenshot of the ESA Juice progress bar showing 35% completion rate.A white, glowing egg-shaped object lies in the centre of the black-and-white image, on a dark, starry background. Glowing streaks spread upwards from the object. In the top left, a yellow arrow marked ‘Sun’ points straight down, and a blue arrow marked ‘Velocity’ points towards the 7 o’clock direction. In the bottom left, an inset shows the same object on a lighter grey starry background, filled with ragged-edged, concentric egg shapes gradiented black-to-white.
Björn Jónsson@bjornjonsson.bsky.social · 5mo ago

(1/4) Jupiter test renders from Voyager 2 data. The left one is from a map I made years ago. The right one is from a new map I'm working on from the same data. The color is better and will be even better in the final version. But the biggest change is that the new map is geometrically more accurate.

BildBild
Andrea Luck@andrealuck.bsky.social · 8mo ago

1/n 2 NEW epic images of Phobos over Mars just released by @esa.int Mars Express This view is especially striking, with Phobos between the Tharsis volcanoes and Noctis Labyrinthus–Valles Marineris Full resolution 300MP(!) & info on: flic.kr/p/2rMW4so Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY 🧪🔭

A wide view of the planet Mars fills the frame, shown as a curved, rust-colored world against black space. The bottom edge fades into darkness, marking the planet’s night side, while the upper portion is brightly lit by sunlight. Near the right side are three large, round volcanic mountains of the Tharsis region, each with a wide circular base and a darker central caldera, resembling shallow craters pressed into the surface. North of these volcanoes, stretching almost vertically across the upper right half of the planet, lies Noctis Labyrinthus and Valles Marineris: an immense system of deep canyons and fractured terrain that appears as pale, branching scars and cracks, partly softened by hazy, cloud-like atmospheric features. Near the center of the image, positioned between the volcanoes and the canyon system, a small dark oval appears against Mars’s surface. This is Phobos, one of Mars’s satellites. Its tiny size stands out sharply against the vast scale of the planet below.
Björn Jónsson@bjornjonsson.bsky.social · 8mo ago

No new JunoCam images have appeared since July but there are many older, spectacular images I still haven't processed. I processed this one recently. This is from the PJ14_21 raw image data obtained on July 16, 2018. Approx true color/contrast and enhanced versions. North is to the upper left.

BildBild
Daniel Machacek@danielmachacek.bsky.social · 8mo ago

Martian moon Phobos from Mars Express' HRSC camera. A color composite of three images taken through ND, GRN, and BL filters. Largest crater with bright splotches is Stickney. North is up. Date: September 19, 2025. Credit: ESA\DLR\FU Berlin\D. Machacek.

Color image of Martian moon Phobos with large crater Stickney near center of the image.
Andrea Luck@andrealuck.bsky.social · 8mo ago

3/3 If you’ve been following my work this won’t come as a surprise. I’ve once again updated the family portrait of the Solar System’s giant planets captured in near infrared by JWST Full size+info flic.kr/p/2oUkYSY 🧪🔭 I’ll keep updating it whenever an improved version of these giants is released🙂

The image is divided into four sections, each showing one of the gas giants against a black background. Top left: Jupiter. It appears as a large, round sphere with horizontal bands in shades of light brown, tan, and white. A bright white oval storm sits on the lower right side. A faint ring is visible alongside Europa, one of its satellites, which appears very bright with a star-shaped artifact. Top right: Saturn appears as a pale gold/brownish sphere with horizontal bands, encircled by a bright whitish, thin oval ring system. The atmosphere is showing off a few circle whitish storm-like features. Bottom left: Uranus. It appears as a smooth blue-green sphere with some whitish circular clouds around the pole that is facing the observer. Surrounding it is a bright circular ring system made up of thin white lines. The rings form a bright, symmetrical halo around the planet. Bottom right: Neptune. It is a blue sphere with slightly brighter and darker circular features on its atmosphere. It also has a thin ring system, dimmer and less defined than Uranus’s in this image, appearing as a faint double oval around the planet. Each planet has its name printed below it in white capital letters.
Walter B. Myers@walterbmyers.bsky.social · 8mo ago

Photorealistic animation of a Carboniferous scene from 320 million years ago featuring Lepidodendron at various stages of growth. Not AI. Created with Blender, Photoshop, & Premiere Pro. #carboniferous #lepidodendron #flora #prehistoric #artadventcalendar vimeo.com/1089774111?f...

Lepidodendron forest rain

Photorealistic animation of a Carboniferous scene from 320 million years ago featuring Lepidodendron at various stages of growth.. Also featured is Noeggerathia…

vimeo.com

Björn Jónsson@bjornjonsson.bsky.social · 8mo ago

On this day back in 1995, the Galileo spacecraft performed its Jupiter orbit insertion burn. Due to problems with the tape recorder, no images were taken. However, these images showing the Great Red Spot were obtained on June 26, 1996 during the G1 orbit. The contrast and color has been exaggerated.

BildBildBild
Andrea Luck@andrealuck.bsky.social · 9mo ago

1/3 You might’ve seen last week’s newly released JWST data of Planetary Nebula NGC2440, here’s my take on it 😵 Full size 4K image and more info in this thread 🧵 🔭🧪 Credit: NASA/ESA/CSA/STScI/j. Roger/Andrea Luck CC BY