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Pretty picture: Landsat view of southern Greenland

Björn Jónsson • November 13, 2012

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.

Watching the slow shift of seasons on Titan

Emily Lakdawalla • November 06, 2012

A sharp-eyed amateur noticed two images of Titan taken 20 months apart from nearly exactly the same perspective, and they illustrate how the shifting of Saturn's seasons has brought change to Titan's atmosphere.

DPS 2012: The most detailed images of Uranus' atmosphere ever

Emily Lakdawalla • October 22, 2012

New ground-based images of Uranus show more finely detailed structure than any photos I have ever seen.

Astrophotos making the web - the good, the bad and the ugly ...

Daniel Fischer • October 10, 2012

Space blogger Daniel Fischer writes about the problem of composited astrophotos being distributed through social media channels by people unaware that they are artworks, not documentary photographs.

Curiosity catches sunspots along with Phobos and Deimos transits

Emily Lakdawalla • October 03, 2012

Curiosity has been shooting photos of the Sun as Phobos and Deimos cross its face, and -- as far as I can tell -- captured sunspots as well.

Cure for the blues: processing images of a blue planet

Emily Lakdawalla • September 06, 2012

I noticed today that I hadn't seen any amateur-processed versions of Voyager's departing shots of Uranus, so I decided to give it a try.

Curiosity's high-res Navcam panorama in striking color

Jason Davis • August 10, 2012

So far, the only high-resolution surface panorama we've seen from Curiosity is the black and white Navcam image. The Mastcam shot a color panorama, but the only version we have so far was created from the lower-resolution thumbnails.

Steins, a jewel in the asteroid belt

Emily Lakdawalla • June 13, 2012

A notice of some new names for features on asteroid 2867 Steins inspired me to dig up the data set from the September 5, 2008 Rosetta flyby and explore it to see what it contained.

Making Pictures based on NASA Imagery

Andrew Rush • June 08, 2012

When amateurs process NASA images, can they hold copyright over them? Yes, sometimes. Andrew Rush of IPinspace.com explains the law.

Pretty pictures from Cassini's recent Dione flyby

Emily Lakdawalla • May 04, 2012

Cassini performed its last of three close encounters with Enceladus for 2012 two days ago, and followed the flyby with some spectacular images of Dione.

How Science Informs Art

Jodie Utter • April 27, 2012

A paper conservator at an art museum explains how scientific analysis of artworks using different parts of the electromagnetic spectrum is informing understanding of how the artists worked, and how the appearance of their pantings has changed with time.

Snapshots From Space Video: Revealing Jupiter's (Mostly) Unseen Treasures

Mat Kaplan • March 18, 2012

Tens of thousands of Jupiter images were taken by the Voyager spacecraft, but relatively few have been processed to reveal their true beauty and wonder. The latest Snapshots video from Emily Lakdawalla explains why.

Comparing Chang'e 2 and Lunar Reconnaissance Orbiter maps of the Moon

Phil Stooke • February 13, 2012

How does the LRO lunar map compare with the new Chinese product from Chang'e 2?

How Spacecraft Make Color Pictures

Mat Kaplan • January 02, 2012

Whether you heard the show or not, you'll be fascinated by Emily's great presentation. It also proves she is not part of the great conspiracy that is hiding evidence of alien bases on the moons of Saturn!

A little fun with Deep Impact deep-sky data

Emily Lakdawalla • November 14, 2011

Last week, the team put all of the data from Deep Impact's deep-sky imaging session online, and challenged visitors to see what they could make from it. I made some photos of M51, but there were some challenges.

What do Dawn's color ratio images of Vesta mean?

Emily Lakdawalla • November 01, 2011

The Dawn mission to Vesta continues to release an image every day, and recently they have been releasing lots of color images. I like color pictures for aesthetic reasons, but color is actually a very important property of planetary surfaces.

The Making of Martian Clouds in Motion: Part 2, tweening the animation

Emily Lakdawalla • August 28, 2011

Two weeks ago I posted an awesome video of Martian clouds in motion. Last week I explained how I accessed the Mars Express images that comprise the animation. Today I'm going to explain how I turned the five-frame animation of Mars Express images into a smooth movie.

The Making of Martian Clouds in Motion: Part 1, working with Mars Express HRSC data

Emily Lakdawalla • August 22, 2011

Last Friday I posted an awesome video of Martian clouds in motion. This week I'll tell you how I made it. The how-to is split up into two parts. The first, today, is how to access Mars Express HRSC image data and process it into the individual animation frames, from which you can make an animated GIF.

Pretty picture: five moons for Cassini

Emily Lakdawalla • August 03, 2011

Explaining how to combine the red, green and blue images from a recent Cassini image session containing five of Saturn's moons: Janus, Pandora, Enceladus, Mimas and Rhea.

Saturn's storm: A quick turnaround from Hubble

Emily Lakdawalla • March 28, 2011

Saturn's raging northern storm has been watched since it began by amateur astronomers, and now Cassini is getting in to the act too. Presumably once astronomers realized the magnitude of what was going on, some of Earth's great observatories were also occasionally pointed at the ringed planet to watch the storm grow.

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