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Dawn data in the PDS
elakdawalla
post Feb 15 2012, 12:55 AM
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Hey folks, Christmas came just a little bit late this year...

http://dawnpub.igpp.ucla.edu

QUOTE
DAWN DATA RELEASE: LEVEL 1A DATA FROM APPROACH AND SURVEY

The Dawn project has created a public website that is available to serve the cruise and Vesta data sets that have been delivered to the Planetary Data System (PDS) while the data are still under review. Data are available from all three Dawn instruments, the Framing Camera (FC), the Visual and Infrared Mapping Spectrometer (VIR), and the Gamma Ray and Neutron Detector (GRaND). The data that are currently available are raw data, in engineering units, sometimes referred to as EDRs by the PDS or as NASA level-1a data. Additional data sets will be added when they are submitted to the PDS.

The Dawn website is located at:

http://dawnpub.igpp.ucla.edu

Users of these data should exercise caution. Invariably there will be errors or omissions in the documentation. Please report any problems...
It is a LOT of data. Just the Vesta Approach includes about 2000 FC images! Wow!!!

I think that the first thing I'm going to work on is that approach sequence/movie that I wish I'd had in real time. The rotation of Vesta through the image sequences makes color composition very hard, but I am sure there are people here who are up to it. I hope someone here can come up with a pretty color global shot that I can put into a comparison montage!


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Bjorn Jonsson
post Jul 22 2014, 04:30 PM
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Here are two images showing Aricia Tholus:

Attached Image
Attached Image


North is up. The first one is an approximately true color mosaic from HAMO data. The second one shows more details and includes LAMO images colorized from the HAMO images. The HAMO images were obtained by Dawn on October 26, 2011 and the LAMO images on April 30, 2012.

Dawn imaged Vesta globally using all of its color filters during the HAMO mission phase. A lot of clear filter coverage was also acquired during LAMO but color coverage is limited. Only the 918, 749 and 548 nm filters were used for color during LAMO, the images are 2x2 binned and only cover selected parts of Vesta's surface. So if you want RGB LAMO images you must use HAMO images to colorize the LAMO clear filter images.

As in the images I have posted earlier in this thread, the above mosaics were made by using the shape model to reproject the images to simple cylindrical projection. All of the mosaicking and color work was then done in simple cylindrical projection and the final image products then made by rendering the shape model with the map draped over it. The shape model is big and accurate enough that this works very well for HAMO and LAMO data. I sometimes needed to translate the reprojected data by 1-2 pixels in the x and/or y direction though when doing color composites and/or mosaics.

Aricia Tholus is really a mountain but this is not obvious in the images above where we are looking directly down. But an anaglyph made by draping the above HAMO image on the hi-res shape model shows this beautifully; here we are looking to the west:

Attached Image


This also makes it obvious that even though some of Aricia Tholus is dark, parts of it are made darker by being tilted away from the sun.

I should mention that I converted the shape model to a png file using the following img2png command:

img2png global.pds -fstretch211946,293010

This results in a png file where black represents points that are 211.946 km from Vesta's center and white is 263.010 km from Vesta's center. This is the full elevation range of the shape model. The most recent version of img2png must be used for this to work properly.

Of course it is also possible to use false color HAMO data to colorize the higher resolution LAMO data. Here is an example showing Aelia, a small crater with interesting streamer-like crater rays:

Attached Image


Here 918, 749 and 548 nm HAMO images are used for red, green and blue respectively. Color saturation has been greatly exaggerated, I set the saturation to 85 in Photoshop after first making the average color of the image gray. The HAMO images were obtained by Dawn on October 4, 2011 and the two LAMO images on January 10, 2012 and April 30, 2012.

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Posts in this topic
- elakdawalla   Dawn data in the PDS   Feb 15 2012, 12:55 AM
- - elakdawalla   I'm so excited about this data that I'm br...   Feb 15 2012, 06:16 AM
|- - Stu   QUOTE (elakdawalla @ Feb 15 2012, 06:16 A...   Feb 15 2012, 11:19 AM
- - elakdawalla   (Sorry if I am talking to my self here. I hope it...   Feb 15 2012, 06:38 AM
- - Astro0   Awesome work Emily. With the images and animation...   Feb 15 2012, 10:22 AM
- - machi   I'm very happy with that data release, and you...   Feb 15 2012, 12:03 PM
- - Adam Hurcewicz   now I see "This site is temporarily under con...   Feb 15 2012, 07:00 PM
|- - elakdawalla   QUOTE (Adam Hurcewicz @ Feb 15 2012, 11:0...   Feb 15 2012, 10:04 PM
- - PDP8E   Emily, nice animation!   Feb 15 2012, 08:01 PM
- - Adam Hurcewicz   So where is this data ? Anyone knows ?   Feb 17 2012, 10:26 AM
|- - pablogm1024   Is it right to say that, if data has been publicly...   Feb 17 2012, 02:50 PM
- - Floyd   I doubt that anyone in this forum would say no. ...   Feb 17 2012, 04:18 PM
- - Phil Stooke   The original link went into the data page, now it ...   Feb 17 2012, 04:53 PM
- - Phil Stooke   Just noticed this at the PDS Small Bodies Node: h...   Feb 19 2012, 01:54 AM
- - antoniseb   Including, that the Hayabasa imaging and v2 of the...   Feb 21 2012, 02:58 PM
- - machi   Does anyone know, what happened to Dawn's FC r...   Apr 3 2012, 05:45 PM
- - Phil Stooke   No, much more complicated. There is a disagreemen...   Apr 3 2012, 06:17 PM
- - machi   Thanks for answering my question!   Apr 3 2012, 06:37 PM
- - elakdawalla   I talked with several scientists at LPSC about thi...   Apr 3 2012, 11:08 PM
- - machi   "When I can find time to work with it I'l...   Apr 4 2012, 10:27 AM
- - Sarunia   According to http://pds-smallbodies.astro.umd.edu/...   Apr 28 2012, 11:47 AM
- - Phil Stooke   May not be reliable. I don't think the underl...   Apr 28 2012, 03:02 PM
- - morganism   LAMO data released for Grand http://sbn.psi.edu/p...   Sep 11 2012, 12:44 AM
|- - TheAnt   Water on Vesta, that's a surprise. Science da...   Sep 21 2012, 09:39 PM
- - ngunn   I don't find it surprising. There's water ...   Sep 21 2012, 10:08 PM
- - Paolo   the original papers in Science Express: Elemental ...   Sep 22 2012, 11:14 AM
- - ngunn   Freely available Supplementary Materials from the ...   Sep 22 2012, 12:49 PM
- - Paolo   still more papers on Dawn at Vesta in today's ...   Oct 31 2012, 07:35 PM
- - machi   And now for something completely different - Dawn ...   Nov 15 2012, 01:20 AM
- - Sarunia   It's fantastic news Finally we have it ...   Nov 15 2012, 12:49 PM
- - elakdawalla   Here's a page I built to browse the Vesta appr...   Nov 16 2012, 05:01 AM
- - elakdawalla   Too tired to do anything very insightful with the ...   Nov 16 2012, 06:55 AM
|- - tedstryk   Oh for a little bit of panning about...sometimes I...   Nov 16 2012, 03:12 PM
- - elakdawalla   I have not yet seen a *single* color global mosaic...   Nov 16 2012, 05:16 PM
|- - Bjorn Jonsson   QUOTE (elakdawalla @ Nov 16 2012, 05:16 P...   Nov 17 2012, 12:22 AM
|- - Tom Tamlyn   QUOTE (elakdawalla @ Nov 16 2012, 12:16 P...   Nov 17 2012, 07:27 AM
- - machi   QUOTE (Sarunia @ Nov 15 2012, 01:49 PM) ....   Nov 16 2012, 06:13 PM
- - elakdawalla   I would be very grateful if you could do that one ...   Nov 16 2012, 06:32 PM
- - machi   I haven't that one in "true" colors,...   Nov 16 2012, 06:57 PM
|- - Stefan   QUOTE (machi @ Nov 16 2012, 07:57 PM) I h...   Nov 18 2012, 07:45 PM
- - elakdawalla   Thank you! And here is another index page, to ...   Nov 16 2012, 08:38 PM
- - Bjorn Jonsson   And now I suddenly remember that already more than...   Nov 17 2012, 11:54 AM
- - djellison   You might want to take a look at this regarding sh...   Nov 17 2012, 04:38 PM
|- - Bjorn Jonsson   Two 8 month old posts from this thread: QUOTE (dje...   Jul 18 2013, 10:24 PM
|- - Sarunia   QUOTE (Bjorn Jonsson @ Jul 19 2013, 12:24...   Jul 22 2013, 10:38 AM
|- - Bjorn Jonsson   QUOTE (Sarunia @ Jul 22 2013, 10:38 AM) V...   Jul 24 2013, 11:50 PM
- - Sarunia   This shape is from Dr Robert Gaskell produced afte...   Nov 17 2012, 05:11 PM
- - Sarunia   My quick attempt of projection to the shape model....   Nov 17 2012, 07:40 PM
- - machi   Thank you for that image! That will be useful ...   Nov 19 2012, 03:55 PM
|- - Stefan   QUOTE (machi @ Nov 19 2012, 04:55 PM) Tha...   Nov 20 2012, 12:53 PM
- - Explorer1   Just remember they're not to scale in Stefan...   Nov 19 2012, 10:19 PM
- - machi   I think that albedo is in scale.   Nov 19 2012, 10:52 PM
- - Explorer1   The colors are fine, I know. I just mean the sizes...   Nov 20 2012, 12:11 AM
- - machi   Mosaic of the south pole of Vesta and other images...   Nov 24 2012, 12:07 AM
- - Explorer1   Stunning work machi! That's what we were a...   Nov 24 2012, 12:46 AM
- - Ian R   Merci Beaucoup!   Nov 24 2012, 04:57 PM
- - Phil Stooke   Very nice mosaic - thanks! Phil   Nov 25 2012, 01:11 AM
- - machi   Thank you all! I must say, that this dataset ...   Nov 26 2012, 07:14 PM
- - jasedm   Wyborowy!!   Nov 26 2012, 07:25 PM
- - Hungry4info   That's amazing! Are those images from HAMO...   Nov 26 2012, 08:22 PM
- - machi   Yes, that's images from HAMO. I forgot that. I...   Nov 26 2012, 08:33 PM
- - Sarunia   Machi, your mosaics of Rheasilva and Snowman crate...   Nov 26 2012, 08:33 PM
- - machi   Není zač!   Nov 26 2012, 08:50 PM
- - Bjorn Jonsson   Wow! These are awesome mosaics, especially the...   Nov 27 2012, 01:52 PM
- - Adam Hurcewicz   Here is my version of RGB Vesta Images are taken 2...   Nov 28 2012, 12:02 PM
- - stevesliva   Press release regarding "sinuous" gullie...   Dec 7 2012, 01:27 AM
- - morganism   New image browsing tool availible at PDS for Vesta...   Dec 16 2012, 12:13 AM
- - JohnVV   glad something is working with the new format i ...   Jul 25 2013, 02:23 AM
- - Bjorn Jonsson   Yes, I knew about this example code but I haven...   Jul 25 2013, 10:23 PM
- - Paolo   an extremely interesting paper comparing Dawn and ...   Jul 27 2013, 09:09 AM
- - Bjorn Jonsson   Does anyone reading this know how accurate the rel...   Aug 8 2013, 09:47 PM
- - elakdawalla   I've sent an email to a friend on the Dawn tea...   Aug 8 2013, 10:00 PM
|- - Sarunia   The shape from Gaskell seems to use the old prime ...   Aug 8 2013, 11:58 PM
|- - Bjorn Jonsson   QUOTE (Sarunia @ Aug 8 2013, 11:58 PM) Th...   Aug 9 2013, 12:32 AM
- - Bjorn Jonsson   Everything works now. This is a test image where a...   Aug 10 2013, 11:03 PM
|- - Sarunia   QUOTE (Bjorn Jonsson @ Aug 11 2013, 01:03...   Aug 12 2013, 10:27 AM
- - JohnVV   LSB vs. MSB aren't 16 bit images fun   Aug 11 2013, 08:19 AM
- - Sarunia   I tested with the new rate rotation and it doesn...   Aug 12 2013, 09:20 PM
|- - Bjorn Jonsson   I now have some results of my processing. They rec...   Aug 23 2013, 11:33 PM
- - peter59   HAMO2 and LAMO released about five hours ago. htt...   Aug 13 2013, 09:34 PM
- - Bjorn Jonsson   Here are two global mosaics from the survey phase ...   Sep 18 2013, 11:19 PM
|- - tedstryk   Simply stunning! These are the first large, c...   Sep 19 2013, 02:55 PM
- - Phil Stooke   Beautiful, Bjorn - well done! Phil   Sep 19 2013, 12:25 AM
- - Superstring   Does anyone know when we can expect the first bett...   Oct 20 2013, 09:18 PM
- - elakdawalla   It will be not long after they get the first pictu...   Oct 20 2013, 09:28 PM
- - Adam Hurcewicz   Here is Dawn approach to Vesta from 305 images at ...   Jan 8 2014, 02:55 PM
- - Bjorn Jonsson   Strictly speaking not PDS but it's comparable:...   Jun 22 2014, 01:34 AM
- - Bjorn Jonsson   Here are two images showing Aricia Tholus: ...   Jul 22 2014, 04:30 PM
- - machi   Beautiful images! BTW, I missed completely you...   Jul 22 2014, 06:56 PM
- - Phil Stooke   I missed that initial post too. Very interesting....   Jul 22 2014, 07:51 PM
- - JohnVV   from another post of mine on a different forum bu...   Jul 26 2014, 06:57 PM
- - Bjorn Jonsson   Time flies. It's as if Dawn was at Vesta yeste...   Jan 5 2015, 11:32 PM
- - elakdawalla   Fantastic work, Bjorn. FYI to all, the original p...   Jan 5 2015, 11:45 PM
|- - Superstring   Forgive me if this was inferred in your post, but ...   Jan 6 2015, 01:00 AM
- - elakdawalla   Yes, there will be color images, for sure. At leas...   Jan 6 2015, 05:48 AM
- - JohnVV   from the "HAMO_truecolor_DLR" folder ht...   Apr 20 2015, 01:56 AM
- - JohnVV   might be a down server ,but as of just now ( i not...   Aug 28 2015, 07:22 AM
- - volcanopele   Ceres FC and VIR data from Approach and the RC3 or...   Oct 20 2015, 03:15 PM
- - ZLD   Over 2GB for Approach and RC3, really? Wasn't ...   Oct 20 2015, 06:07 PM
- - ZLD   Someone care to explain why the bright spots in Oc...   Oct 20 2015, 06:20 PM
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