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Blog Archive


Dawn Vesta Data is publicly available (for real this time!)

Posted by Emily Lakdawalla on 2012/11/16 07:08 CST | 2 comments

After a false start earlier this year, the first chunk of Dawn Framing Camera data from Vesta has finally made it to the Planetary Data System. As a first step to understanding the data set, I've built some index pages to these cool images.

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Pretty picture: Landsat view of southern Greenland

Posted by Björn Jónsson on 2012/11/13 05:24 CST

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.

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Watching the slow shift of seasons on Titan

Posted by Emily Lakdawalla on 2012/11/06 02:45 CST | 1 comments

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.

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

Posted by Emily Lakdawalla on 2012/10/22 04:14 CDT | 4 comments

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

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

Posted by Daniel Fischer on 2012/10/10 04:18 CDT | 2 comments

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.

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Curiosity catches sunspots along with Phobos and Deimos transits

Posted by Emily Lakdawalla on 2012/10/03 07:15 CDT | 2 comments

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.

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Cure for the blues: processing images of a blue planet

Posted by Emily Lakdawalla on 2012/09/06 01:00 CDT

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.

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Curiosity's high-res Navcam panorama in striking color

Posted by Jason Davis on 2012/08/10 07:10 CDT | 4 comments

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.

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Steins, a jewel in the asteroid belt

Posted by Emily Lakdawalla on 2012/06/13 09:00 CDT | 1 comments

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.

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Making Pictures based on NASA Imagery

Posted by Andrew Rush on 2012/06/08 12:01 CDT

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

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Pretty pictures from Cassini's recent Dione flyby

Posted by Emily Lakdawalla on 2012/05/04 05:44 CDT

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.

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How Science Informs Art

Posted by Jodie Utter on 2012/04/27 02:02 CDT | 1 comments

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.

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

Posted by Mat Kaplan on 2012/03/18 01:46 CDT | 2 comments

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.

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

Posted by Phil Stooke on 2012/02/13 10:23 CST | 2 comments

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

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How Spacecraft Make Color Pictures
Emily's Slides From the December 2011 Planetary Radio Live

Posted by Mat Kaplan on 2012/01/02 02:07 CST

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!

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A little fun with Deep Impact deep-sky data

Posted by Emily Lakdawalla on 2011/11/14 05:44 CST

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.

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

Posted by Emily Lakdawalla on 2011/11/01 07:58 CDT

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.

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

Posted by Emily Lakdawalla on 2011/08/28 06:14 CDT

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.

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

Posted by Emily Lakdawalla on 2011/08/22 08:39 CDT

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.

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Pretty picture: five moons for Cassini

Posted by Emily Lakdawalla on 2011/08/03 09:57 CDT

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.

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