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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 unmannespaceflight.com or on this website. (UMSF Moderator: Bjorn Jonsson)

Latest Blog Posts

The subtle color difference between Uranus and Neptune

March 11, 2019

The color of Uranus and Neptune is similar, but not identical. Uranus appears greener and Neptune bluer.

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.

Latest Processed Space Images

OSIRIS-REx MapCam view of the Moon, 3 days after flyby

October 23, 2019

Color image enlarged by a factor of 2. OSIRIS-REx took this photo on 25 September 2017 from a range of 1,227,000 kilometers.

OSIRIS-REx NavCam view of Earth and the Moon, 3 days after flyby

October 23, 2019

Enlarged by a factor of 2, the image clearly shows how dark the Moon is compared to Earth. OSIRIS-REx took this photo on 25 September 2017 from a range of 1,331,000 kilometers to Earth, and 1,222,000 kilometers to the Moon.

OSIRIS-REx PolyCam view of the Moon, 3 days after flyby

October 23, 2019

North is to the upper right. The circular dark spot left of center near the terminator is Mare Crisium. OSIRIS-REx took this photo on 25 September 2017 from a range of 1,166,000 kilometers.

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