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Björn Jónsson

Bjorn Jonsson

Björn Jónsson

Björn Jónsson (Iceland) is the developer of the IMG2PNG software, which batch-converts spacecraft image data to PNG format.  His website contains simulated views of other planets produced using image maps generated from space image data; most of his image processing work is posted only within or on this website. (UMSF Moderator: Bjorn Jonsson)

Latest Blog Posts

Juno meets Cassini: A new merged global map of Jupiter

May 14, 2018

The Juno spacecraft that is currently orbiting Jupiter has obtained the first good images of Jupiter's polar regions. I am presenting here a combined global map of Jupiter, made from a Cassini map I made for the equatorial and temperate regions and polar maps made from the Juno JunoCam and JIRAM polar images.

Diving into Juno JIRAM data archives

April 11, 2018

The Jovian Infrared Auroral Mapper (JIRAM) instrument can obtain images in two infrared bands. JIRAM can see the nightside of Jupiter (including the winter pole) and takes spectacular animations.

Voyager 40th anniversary: Revisiting the Voyagers' planetary views

August 30, 2017

Björn Jónsson argues that even now, 40 years after Voyager 1 and 2 were launched, a lot of the data they returned is still of high interest.

Latest Processed Space Images

Jupiter as seen by NASA’s Juno spacecraft

Not published yet

This animation shows how Jupiter appeared to NASA's Juno spacecraft when its JunoCam camera was imaging Jupiter at approximately 13:13:40 on February 2, 2017. The animation is based on the images obtained by JunoCam at this time. Due to the spacecraft's spin the camera sweeps across Jupiter's disc and is able to image a large area over a period of several seconds. For clarity this animation is slowed down by a factor of 1.8.

Movie of Jupiter's north pole from Juno JIRAM

April 11, 2018

A time-lapse showing motion near Jupiter's north pole. The time-lapse sequence was created from three mosaics of images obtained by the Jovian Infrared Auroral Mapper (JIRAM) instrument aboard NASA's Juno spacecraft on February 2, 2017. The three mosaics were obtained over a period of a little under 3 hours. During that time the spacecraft was approaching Jupiter and the resolution of the images was getting better. The time-lapse is in orthographic projection and shows the polar area from directly above the north pole. It has been 'tweened' (in effect adding synthetic frames) to make the motion smoother. Because the original video is very short it is looped four times. For full resolution, download the image in MP4 format.

Jupiter's south pole from JunoCam

April 11, 2018

An impossible view of Jupiter's south pole, as it would appear if lit and viewed from directly above. It is a mosaic of JunoCam images from perijoves 6, 7, and 8 in May, July, and September 2017. The effects of the varying global illumination have been removed.

astronaut on Phobos
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