Voyager 1 revisited: Io and Europa transiting Jupiter

Posted 2013/01/22 06:04 CST | 0 comments

What is the highest resolution global Jupiter mosaic that includes a satellite transit that can be assembled from Voyager images? Satellite transits are especially beautiful when the resolution is high enough for some details to be visible on the satellites so I decided to check this. And I was remarkably lucky.

Pretty picture: Landsat view of southern Greenland

Posted 2012/11/13 05:24 CST | 0 comments

This is a very large (19000 pixels square) mosaic of the fjords and glaciers of southern Greenland. I had been interested for a long time in experimenting with the processing of Earth satellite imagery just to get a comparison to the other planets.

A Voyager 1 anniversary mosaic

Posted 2012/09/06 11:58 CDT | 0 comments

Back in 1979 the twin Voyager 1 and 2 spacecraft flew by Jupiter. Some of their images were processed into color images and mosaics that have appeared countless times in books, magazines, on TV and on the Internet. Many of these images and mosaics are spectacular but they were processed more than 30 years ago using computers that are extremely primitive by today's standards. It's possible to get better results by processing the original, raw images from the Voyagers using modern computers and software.

High-resolution Voyager 1 view of Jupiter with Io and Europa

Posted 2013/01/21 | 1 comments

A double transit of Jupiter by moons Io and Europa, as observed by Voyager 1 on its approach on February 27, 1979. This is a 14-frame mosaic. Most of the data was captured in a 3-by-3 mosaic at around 11:00 on February 27, 1979, but gaps were filled with data taken an hour before and an hour later.

Southern Greenland from Landsat 7

Posted 2012/11/13 | 0 comments

A mosaic of several Landsat 7 images showing southern Greenland. The resolution is about 30 meters per pixel. The source data was obtained in July and August in 1999-2002 and was selected to be free from clouds in the land areas.

Saturn spot time lapse movie

Posted 2012/09/11 | 0 comments

A 20-frame sequence of images obtained by Cassini in September and October 2004. The time interval between individual frames is not uniform.