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Posted by: elakdawalla Apr 24 2007, 01:56 PM

Hayabusa's data has been released!

Press release: http://www.isas.jaxa.jp/e/snews/2007/0424.shtml
Site for data: http://hayabusa.sci.isas.jaxa.jp/

The release includes the AMICA (camera), NIRS, LIDAR, and XRS data, plus SPICE kernels and the shape model!!!

AMICA data (from http://hayabusa.sci.isas.jaxa.jp/amica.pl)) is in FITS format. There is an observation log with basic information about each image, available through that link.

Unfortunately, I have to return to bed to attempt to overcome a bout of the flu so I can't play I knew this was coming yesterday and wanted to check for it and let you guys know about it. Have fun.

--Emily

Posted by: Stu Apr 24 2007, 02:11 PM

VERY cool pics! Just had a 5 min browse before heading out to work, but this caught my eye...

Is that dark area at the top an imaging artefact, or the shadow of the probe's panels falling on the asteroid? If it's the latter, that's beautiful...

Posted by: ngunn Apr 24 2007, 02:24 PM

That shape model 3D movie is something definitely not to be missed. Top of the bill for my astronomy class this evening!!!

Posted by: ElkGroveDan Apr 24 2007, 03:31 PM

Agreed. That is just about the coolest thing.
http://hayabusa.sci.isas.jaxa.jp/data/shape/movies/itokawa_g070104.mov

Posted by: ustrax Apr 24 2007, 03:46 PM

In spite of all the problems this mission is truly http://hayabusa.sci.isas.jaxa.jp/data/amica/20051119/ST_2559003068_v.jpg...

Posted by: ugordan Apr 24 2007, 03:55 PM

The 3D model of the asteroid has got to be one of the coolest things I've seen this year. And someone still regards this mission as a failure...

Stu, whatever that is, I don't think it's a shadow. Way too big for that. I'd guess something in the optics. Might even be color filters as far as I know.

EDIT: Ah, silly me, should have read the instrument description...
"Four position-angle glass polarizers were mounted on an edge of the 1024 pixel by 1024 pixel CCD chip."
That's the "shadowing" effect as polarizers let through less light.

Posted by: Airbag Apr 24 2007, 05:25 PM

The dark area at the top of the image is (from the JAXA web site):

"Four position-angle glass polarizers were mounted on an edge of the 1024 pixel by 1024 pixel CCD chip."

You can see it more clearly on the various close up images.

Airbag

Posted by: Airbag Apr 24 2007, 06:43 PM

It turns out the B, V and W filters used on the AMICA camera make it very easy to make pleasing RGB-like images by mapping BVW to BGR. I have attached such a composite from the Earth swingby below; all I did was tweak the gamma a little to brighten the image.

Airbag

Posted by: ngunn Apr 24 2007, 06:47 PM

Very nice, Airbag. What's the yellow spot near New York?

Posted by: volcanopele Apr 24 2007, 06:51 PM

As a member of the Cassini project ("where all nicknames for surface features relate to cats"), I dub the boulder at lower left "Tiger Rock"

Posted by: Airbag Apr 24 2007, 07:20 PM

Data drop out in the B channel? I just used the raw jpg images "as is"; no attempt at any corrections or filtering beyond just a touch of gamma.

Airbag

Posted by: Stu Apr 24 2007, 09:37 PM

re "shadow" - thanks for clearing that up guys. I'd probably have found that if I'd had time before going out.

Posted by: David Apr 25 2007, 01:20 AM

Looking at the 3-dimensional model, it seems really obvious that Itokawa is two, maybe three big chunks of rock stuck together at an odd angle with some accreted rubble cementing them together.

Posted by: mchan Apr 25 2007, 03:53 AM

It's a modesty shield.

The base of my mind working there. Sometimes a cigar is just a cigar.

Posted by: JRehling Apr 25 2007, 04:28 PM

Based on what I've seen while driving through, it could be the clouds of New Jersey, which can also be green, magenta, or brown, depending on the day's industrial activity.

Posted by: Paolo Apr 25 2007, 04:38 PM

Are you sure this is the complete image set?
I can't find any of those fantastic pictures showing the shadow of Hayabusa hovering above Itokawa!

Posted by: djellison Apr 25 2007, 08:32 PM

Had a hack at that same image myself

Doug

Posted by: centsworth_II Apr 25 2007, 08:45 PM

But where is Hayabusa's shadow?

Posted by: 4th rock from the sun Apr 25 2007, 09:04 PM

Here are some RGB images, with correction for filter wavelenghts via CIE colorspaces. Nice image of the asteroid's surface!!! Only gamma was corrected, color saturation is left untouched from the raw data on all images.

Posted by: Subaru Apr 26 2007, 04:19 AM

You're right. "Hayabusa's shadow and the target marker's light" picture isn't in the site now.
Current pictures are "for science" pictures, and the "shadow and light" one was "for navigation control."
(So - please forgive my rudeness - correct title is "Hayabusa science data released!".)

Of course I belieave that ISAS will add such famouse pictures. Plese wait!

Posted by: remcook Apr 26 2007, 10:57 AM

amazing pictures! I didn't realise there was any color variations of the surface, let alone that much (even if streched)!

Posted by: ugordan Apr 26 2007, 11:11 AM

Doug, that Earth image looks sharper than the JPEGs readily downloadable produce, I assume you got FITS files instead? The JPEGs seem to be filtered out with something like a median filter, killing any small scale details (note particularly 4th rock's Itokawa global image above). Don't know why that would be the case.

Posted by: djellison Apr 26 2007, 11:27 AM

Yup - FITS.

Posted by: Stu Apr 26 2007, 02:49 PM

Obviously you weren't looking hard enough...



Smart****

Seriously tho, what an amazing story... The Little Probe That Could, eh? And what a wealth of pictures it's given us. Even the ones that don't appear to show much at first glance are intriguing, and add something to our knowledge, and weren't sat on just because someone doesn't think they're worth sharing with the Wide World. No bleating about images "not being suitable for PR" from the Hyabusa people...

Posted by: CosmicRocker May 6 2007, 08:19 PM

These are some really amazing images. Many thanks to the Hayabusa team for making them available. I first read about it on http://www.planetary.org/blog/article/00000958/, and was impressed with the animation of a rotating Itokawa that was made by Øyvind Guldbrandsen. It occurred to me that it wouldn't be difficult to turn that animation into an animated anaglyph, which I just finished. To make it a less tedious task I used the 57-frame animation that Emily posted rather than the original 169-frame version. Still, making 57 anaglyphs in one day with Photoshop is a new record for me.

http://home.earthlink.net/~swulius/images/Itokawa-anaglyph_guld_57.gif is a little over 3 MB. I may not be able to leave it up for a long time because it uses a large part of the small amount of server space my ISP allots to me.

Posted by: babakm May 7 2007, 12:54 PM

That's amazing!

Definitely looks like more than two main lobes. After staring at it for a few revolutions and taking in the way the huge boulders are just gently resting on the surface, it looks like the whole thing would just float apart with the slightest nudge.

Posted by: elakdawalla May 7 2007, 03:01 PM

Cool stuff, cosmicrocker! I will probably blog this sometime this week, so I reposted it on our site -- people, you can go http://filicio.us/tpss3/files/19441/Itokawa-3d-guld-swul_57.gif for CosmicRocker's animation if you want to avoid killing his server.

--Emily

Posted by: elakdawalla May 8 2007, 01:21 AM

These data were released in FITS format. I downloaded it all and used IMG2PNG to convert it to PNG format (thanks, Bjorn!!). I created browse pages and downloadable Zip archives of the entire data set.

This is sort of an experiment to see if people like this and find it useful. I'd appreciate feedback.

http://planetary.org/explore/topics/hayabusa/rawdata.html

--Emily

Posted by: ElkGroveDan May 8 2007, 02:08 AM

This is just the coolest thing CR. Thank you. (now do all 169 frames please )

Wow. Just wow.

Posted by: djellison May 8 2007, 06:54 AM

Not sure how you did it, if I did that it'd take 28 years Inspired

Doug

Posted by: Tman May 8 2007, 08:16 AM

Wow Emily, you are fantastic!

It is very nice to browse over in this way. I guess, in this form, you could it even deliver back to JAXA for a nice mite

In the http://planetary.org/data/hayabusa/index_cruise1.html page currently I get only black images when I click on a thumbnail.

Edited: There are still more of these dark images, I guess they need yet a tonal value adjustment.

Posted by: ngunn May 8 2007, 09:05 AM

For me that amazing 3D animation updates by halves - top, bottom, top, bottom . . . Can anyone advise how to avoid this?

Posted by: djellison May 8 2007, 10:14 AM

Sounds like a symptom of a sluggish machine that can't play a big anim-gif - I can make a .mov of it tonight now if I'm a bit cheaky at work waiting for videos to render that should solve the problem for you as long as you can play quicktime movies. One option - save the gif and load it in Quicktime. Other option - just load the attached quicktime movie instead

Doug

Posted by: ngunn May 8 2007, 11:11 AM

Brilliant, thanks Doug.

Posted by: belleraphon1 May 8 2007, 11:21 AM

Absolutely fantastic job, Emily. I would call this a very successful experiment just from the angle of getting data out to those of us who can be a bit tschno-challenged at times.

Beautiful stuff... what a fantastic little space craft... what strange and wonderful visions of that little rubble pile in space..... this is a true treasure trove and the folks at JAXA and ISAS should be proud.

Hope they bring her home.

Craig

Posted by: tedstryk May 8 2007, 11:23 AM

Great job making it accessible!

Posted by: elakdawalla May 8 2007, 03:19 PM

Since the images are 16-bit, for a lot of them, all the pixel values are pretty near the black end of the histogram. Just adjust the contrast in whatever imaging software you prefer.

And you're welcome, guys. This is relatively easy for me to do, because it takes very few brain cells, only quick and accurate clicking, typing, and downloading, and some tricky uses of batch processing software, and Excel text editing functions to create the html for me. I can easily do it while the rest of my brain (and, often, one of my hands) is occupied entertaining the baby. In payment all I ask is that you post some more nice image products that I can share on the blog.

Got any requests for other data sets that would be valuable to have done this way?

--Emily

Posted by: CosmicRocker May 8 2007, 04:02 PM

That truly is excellent, Emily. We're all grateful that you had that one hand free. As for other datasets that you might do, I'm not sure what is available, but might be interesting to see imagery from some neglected mission that we could try to work with. I suspect someone will have specific suggestions.

Thanks to all for the kind comments on the 3D animation. I'm glad people enjoyed it. ElkGroveDan: Regarding your suggestion, I probably won't get around to it until I retire later this year.

Posted by: 4th rock from the sun May 9 2007, 12:58 PM

Emily, thanks for the work in making the data accessible with all the info needed for us who like to do a little image processing.

These are my results, based on the nice 16bit PNGs Color saturation is as in the original data, only gamma was adjusted and some unsharp mask was used.

Perhaps processed image such as these could be made accessible next to the raw data. For my part, these images can be used freely, just add "processed by R. Nunes" to the credits.

As for some other datasets, that's a great idea... perhaps it would be easier to start at the beginning, with older missions, because the data volume is lower and the images much less circulated in an accessible form. Off course, as discussed on other topics, much of the stuff doesn't even exist any more. Anyway, just three suggestions: Giotto and Vega, Phobos, Pioneer (PVO, 10, 11).

Posted by: elakdawalla May 9 2007, 03:14 PM

Thanks, 4th rock, and they're duly blogged!

I'll have to look in to these other data sets and see if I can work with them. Doing Hayabusa was facilitated by the fact that I could download all the data in a day or two, and then batch-convert the files with IMG2PNG. I agree that starting from as far back as possible is a great idea, for both of the reasons that you mention.

I think it's a nice idea to post processed views next to the raw data, except that these raw data pages are generated automatically from the Excel spreadsheet of the image metadata. Adding in processed versions will require more hand-editing and maintenance than I really want to do.

--Emily

Posted by: nop May 9 2007, 05:13 PM

Dear Emily and Guys,

Thank you for your excellent images and movies! We Japanese are grateful for your providing eye-friendly data.

Here are some more images and movies mostly by Japanese fans. Sorry that they are written in Japanese,
but I hope you'll enjoy images at least.

Stereograms:
http://yunzu.qee.jp/sitefolder/copages/itokawa/itokawa.html

Wireframe animations:
http://www2s.biglobe.ne.jp/~ken-ishi/3D-Itokawa.htm

Plug-ins for 3D Polygon Modeler Metasequoia (http://www.metaseq.net/metaseq/index.html):
http://www.imasy.or.jp/~imae/kagaku/itokawa.htm
http://wanderer.jp/metasequoia/index.html

Celestia data (converted by Chris):
http://www.shatters.net/forum/viewtopic.php?t=10984

And my recommendation is a Google Earth file provided by Dr. Hirata (Hayabusa Science Team). Itokawa is floating over ISAS
http://kumano.u-aizu.ac.jp/~naru/Itokawa_slope_over_ISAS.kmz

Enjoy!

Posted by: CosmicRocker May 10 2007, 05:01 AM

Thank you, nop. I especially enjoyed Dr. Hirata's kmz file. I was expecting a sample return, but I had no idea the plan was to bring the whole thing back home.

Posted by: tty May 10 2007, 06:14 AM

There are a lot of papers on Hayabusa freely available here:

http://ci.nii.ac.jp/vol_issue/nels/AN10446455_en.html


all in japanese unfortunately....

Posted by: Stu May 12 2007, 08:29 AM

Emily,

That pic on the Planetary Society blog showing Itokawa and ISS to the same scale has to be one of the coolest things I have ever, ever seen. Thanks!

Posted by: ugordan May 12 2007, 06:08 PM

Just for the fun of it (and increase of the "me too" factor here), here's my go at the cool Hayabusa Earth image. I couldn't resist - there aren't that many interplanetary spacecraft images of Earth and even fewer ones that catch a glimpse of my puny country
http://m1.freeshare.us/view/?144fs731541.png

Big thanks goes to Emily and her raw page for saving me the trouble of getting a FITS plugin!

Posted by: elakdawalla May 14 2007, 02:48 PM

You're welcome, Stu

One of the many projects on my "to do" list is to continue developing a set of scale images of all kinds of space objects to compare with each other, both manmade and natural. Itokawa and the ISS will help bridge from the natural objects to the manmade ones. I've got a set of images at many scales for the largest 50 or so objects in the solar system -- now I need to work my way down.

--Emily

Posted by: lyford May 14 2007, 03:53 PM

Emily - I can't wait to see the Whole Solar System Catalog in it's finished glory.

I'm sure you've seen this:

http://merzo.net/

But just in case you haven't....

I like how Jeff transitions between different scales - he does have our moon in the mix as well under -2000x.

Posted by: Tman May 15 2007, 01:48 PM

Speaking of comparing with each other...
It seems nowadays jetset is able to afford everything

It's a Mercedes-SL Roadster with 4,530/1,830 meters. I've tried to match it with the 2m scale bar.
It was the only matching car (and woman ) image that I could find.

Posted by: Subaru Jun 11 2007, 03:47 AM

I think you've been waiting for this picture:http://spaceinfo.jaxa.jp/hayabusa/photo/images/itokawa18_large.jpg

JAXA Space Edication Center released "http://spaceinfo.jaxa.jp/hayabusa/index.html" (The Story of 'Hayabusa' Spacecraft).
Though written in Japanese only, its http://spaceinfo.jaxa.jp/hayabusa/photo/index.html has some famouse pictures like "target marker's light and Hayabusa's shadow".

Enjoy!

Posted by: tedstryk Jul 27 2007, 03:39 PM

I have completed my version of Hayabusa's best moon image. I know I am a little late the party with this, but it took me a while to tease anything out of it.

Posted by: spdf Sep 3 2007, 05:21 AM

Itokawa in infrared by Akari


http://www.esa.int/esaSC/SEMZWXE1P5F_index_0.html

Cool!