Saturday, September 18, 2010
The Moon in 3D!
The Bad Astronomer posts some of his favorite images from the LRO mission. Amongst these are some stunning 3D images created by Nathanial Burton-Bradford. Try the rock bridge over a lava tube, the Apollo 14 landing site and the Apollo 15 landing site and many more. Grab your 3D red-green glasses and head on over!
Wednesday, July 14, 2010
Rosetta at asteroid Lutetia
Red-Cyan stereo anaglyph of asteroid Lutetia created from ESA images. You will need red-cyan glasses to see the 3D effect.Around the same time Spain was beating the Netherlands in the World Cup, the comet chasing spacecraft Rosetta passed close by asteroid Lutetia.
You can read the story and see some fantastic images at the ESA website, and you can download images from here.
I made a 3D anaglyph from two consecutive images using the GIMP, they asteroid rotated too much for a good 3D effect, but you can still see the cental blug quite well.
Labels: anaglyph, asteroids, stereograms
Thursday, November 26, 2009
Enceladus's plumes in 3D
The plumes of Enceladus as a red-cyan 3D anaglyph. You will need red-cyan glasses to see it in 3D. Original image credit NASA / JPL / SSI /. (click to embiggen)
Over at the Planetary Society blog Emily has been posting astounding images from the latest fly by of Encaladus. See here, here and here.
Astounded by the cross-eye stereo images Emily posted, I've made my own red-cyan anaglyph for people who can't go cross eyed. Now go and read Emily's pages or go to the raw image website.
Labels: anaglyph, Satellite, Saturn, stereograms
Saturday, September 06, 2008
Still more Mars VMC camera animations: High cloud!
Over at the Mars Express VMC camera site, they have images of an "unknown artefact". I'm pretty sure the artefact is a cloud, with its shadow. In the 3 D image to the left it's pretty clear that the object is much higher than the surface (click to enlarge). In this animated gif, you can see the cloud drift away from a group of 3 craters (use a line drawn from the bottom crater to the nearby peak as a reference), and its shadow grows smaller as the sun rises.(in the animation the streak to the centre left and the parallel bright blobs that turn up at the end are camera artefacts)
Also have a look at this colour composite of Mars created by Ted Stryk, pretty amazing, and Mike Malaska has a great animation of clouds near the terminator.
You can see detailed descriptions of how I made these images here.
UPDATE: My images have been posted at the VMC website, along with Gordan Ugarković's great colour images.
Labels: anaglyph, animation, Mars, Mars Express VMC, webcam
Sunday, July 08, 2007
Stereo Anaglyph of the Sun
Image credit STEREO.I've written before about making stereo images from the STEREO SECCHI beacon images. For the image to the left, all you have to do is cross your eyes, until the images are superimposed, and viola! A 3D image appears. To make this kind of image, you basically just need to copy the ahead and behind images align them and place
them relatively close together, and you have a 3D image. I say basically, as the ahead images are bigger that the behind images, you have to rescale them. I download 512x512 images and rescale the ahead image to 455 x 455. Also, if you are downloading images other than those on the beacon images page, make sure you download images with the same date stamp as the beacon images, otherwise the features on the Sun won't link up properly.The lower image on the left is a stereo anaglyph of the Sun. For these images you need coloured spectacles, with one red and one blue panel (like they give out at 3D movies). While the "crossing eyes" 3D image doesn't require any hardware, many people just can't cross their eyes to form stereo images, and anaglyphs work for everybody. Anyway, this image was created using the Gimp. I was alerted to this use of the Gimp by Peter Tagatac of Top of the Lawn, but never had an astronomical use for it until now.
The full details of how to make an anaglyph with the Gimp is in this tutorial, so I won't repeat them here, but just point out some STEREO specific issues. As for the "crossed eyes" version, you will need to rescale the ahead image (and make sure you have the matching ahead and behind images). As well, it's important that the ahead image is the cyan filtered image, and the behind is the red filtered image (otherwise the 3D effect is mucked up). You will also need to overlay the images. After you have followed the tutorial instructions to create the red and cyan layers, turn the colour layers off, select the top image layer and set the layer attribute to difference, then move the top layer until the images are aligned. Then return the layer attribute to normal, restore the colour layers and proceed as with the tutorial.
Labels: anaglyph, Stereo Satellite, stereograms, Sun
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