As we have now access to archived OSIRIS images and data from other instruments, I think that it's good idea to start up special topic for that.
Here are few results from the newly published data:
https://www.flickr.com/photos/109586958@N03/23644898622/in/photostream/ of Imhotep regio at resolution 0.5 m/pix.
https://c2.staticflickr.com/6/5751/23644898622_af565515d0_o.png
https://www.flickr.com/photos/109586958@N03/23385729259/in/photostream/:
https://c1.staticflickr.com/1/587/23385729259_85bdcb83d9_o.png
https://www.flickr.com/photos/109586958@N03/23385089109/in/photostream/ at 2.2 m/pix:
https://c1.staticflickr.com/1/694/23385089109_b7989a515e_o.png
Very nice anaglyph.
I guess we can't say too much about the colour given that the hue is pretty much uncorrelated with the topography and looks mostly like noise:
Thanks!
There is real color difference between neck area (Hapi and Seth regio) and head and body.
Neck is more bluish.
But global image is from uncalibrated data and global color differences are very subtle.
Beyond that are source images clearly affected by lossy compression and this had major impact on quality of images (in this case).
Losslessly compressed images had better quality and noise looks in them differently (as periodic stripes).
This isn't problem for unenhanced images but only objects which have distinctly different color without enhancing are water ice boulders.
Those are visible mostly on higher resolution images (there is whole icy boulder field in the crosseye/anaglyph stereo image).
I made a set of data browsing pages, with WAC and NAC images grouped together and color-coded by filter.
http://planetary.s3.amazonaws.com/data/rosetta/osiris_fat.html
http://planetary.s3.amazonaws.com/data/rosetta/osiris_cat.html
http://planetary.s3.amazonaws.com/data/rosetta/osiris_gm.html
Enjoy!
I assembled a 4 frame green filter mosaic of the Imhotep region taken on September 5, 2014 from an altitude of 40km. It's got a great view of the sublimation features, and the velvety texture of the smooth area near the terminator is great.
https://flic.kr/p/CcNFDP
I also tried my hand at making a color image. Might be a little on the pink/magenta side, but trying to adjust those made the shadowed areas too green/cyan, so the final result's a compromise between the two extremes.
https://flic.kr/p/BDhQW2
I took the 30 frames from W20140910T035912757ID30F18.IMG through W20140910T042812710ID30F18.IMG and made a full HD bounce animation of the slow rotation. A tiny preview version is included below.
http://i.imgur.com/IJnKFMz.gif
It's hugenormous (65 MB), so beware; it may take a while to fully load, but it's one of the est things I've seen from Rosetta.
The images were processed to show the area of the neck and connected regions that are in shadow. The frames were all captured 1 minute apart by the wide-angle camera, but are being played at ~15 frames per second.
The 1920x1080 dimensions were achieved by cropping the original 2048x2048 frames, not scaling, so this is still at the native/original resolution.
That is AMAZING.
That jet animation looks really nice! I always love how light bounces off of one of the lobes and illuminates the dark side of the other one... you dont get something like that with convex objects like most of the stuff buzzing around out there.
Also i gave that slomoVideo tool a quick try and applied it to six consecutive NAC frames (taken with different filters... but still relatively usable since the color differences are so small)
https://drive.google.com/file/d/0B_Y5O4C6aiKmaXZxdFBxWW9zOTA/view?usp=sharing
works best if played in a loop
Herobrine, that bounce animation is gorgeous.
A three frame color mosaic of the Imhotep region. Hue in this image comes primarily from differing exposure lengths for each filtered image, I've only made minor adjustments to contrast because the shadows were a little on the green side. There might be a hint of color differences in this, as the center of the smooth region is slightly bluer than its surroundings.
https://flic.kr/p/BMcQ9d
Noticed this little guy at the bottom of the animation I posted earlier.
(Click for animation)
I can only second the opinions of the rest, that's an amazing animation Herobrine!
jccwrt: Isn't that mosaic flipped horizontally?
Now that you mention it, it is. I have a hard time keeping track of which way is when working with FITS data...
I'll post a fixed version in the morning, I just noticed I missed a few smuts as well.
Searching for those free-floaters is pretty fun! Haven't managed to find any new ones myself, but it's really neat seeing those little moonlets fly around.
I flipped the image of the Imhotep region horizontally, as well as did a bit of color adjustment to a slightly more neutral color.
https://flic.kr/p/CftSxc
I added the Navcam images to my browse pages, and also went through and reoriented and/or flipped all the images in this release so that everything now matches the Navcams. The NAC images needed to be flipped vertically; the WAC images rotated 180 degrees.
http://planetary.s3.amazonaws.com/data/rosetta/osiris_gm.html
A couple of OSIRIS mosaics capturing most of the comet:
https://flic.kr/p/Bk6TNQ
https://flic.kr/p/Bk7qZh
And one of the Seth(?) Region with a really great view of the layering. Does a great job showing how extensive the layered units are in the comet.
https://flic.kr/p/C83yes
Wow.
That's quite the range of color variation! Excellent work, machi!
I looked for more moonlets in Herobrine's gif, this one jumped out at me on the right edge of the image.
Herobrine, that is awesome work! Amazing how many moonlets you teased out of the data. And thanks to all you other imagery wizards. Wish I had more time to participate...
Some attempts
Herobrine, I think you scooped up most of the floaters, there almost weren't any left for me to find!
I did manage to find a handful of other floaters. Most of them are very close to disappearing in sensor noise. I didn't go through and mark their positions in each frame, since they fade in and out of view, but I did mark their paths in yellow lines.
https://flic.kr/p/BsUPv4
https://www.flickr.com/photos/132160802@N06/23277021393/sizes/o
The one at bottom left very well could be a hot pixel, since it's moving pretty much horizontally and close to the same rate as frame movement. Otherwise I'm pretty sure the other ones are actual floaters.
Good finds!
Though, now that you mention it, these two in the one I posted yesterday appear to move with the frame as well. I guess I should have realized they're more likely to be sensor artefacts of some sort.
Herobrine-- in your third "stacked" non-animated image (http://www.unmannedspaceflight.com/uploads/post-7408-1450718176.png) I note that some of the dust-mote dotted trails have a kink or a bend in them. Is this actually happening, or is this an artifact of the imaging or processing? I also noticed this happening with some of the long-exposuer NavCam images. In some ways, they look/act like subatomic particles in a bubble chamber...
--Bill
Thanks Björn!
There is basic info about that image in the https://www.flickr.com/photos/109586958@N03/23505274619/.
I used http://www.planetary.org/explore/resource-library/data/rosetta-osiris.html
so it's slightly extended beyond human vision capability but it does not use whole spectral capabilities of OSIRIS NAC camera.
This is a wonderful data set. Having at first spent some time fixing IMG2PNG I now have flipped through all of the September 2014 NAC images. Here is a quick and dirty version of image N20140910T161923332ID30F22.IMG (there's more to come later):
This is not technically PDS data, but is relevant to work people are doing here. I've been provided two lists of navigational data (attached):
- a list of all of the OCMs performed to date by Rosetta. It lists start and stop times but these are not the exact burn start and stop times; they are the full lengths of the periods set aside for OCM activities, including slews, pointing, margin, etc.
- a zip file containing Rosetta altitude information at a 1-minute resolution from June 1, 2014 to December 17, 2015.
I'll find some way to add this to my index pages, but thought the raw data might come in handy to some of you, or that you may have some clever ideas for how to visualize it.
Here is a false color view processed to show color/compositional differences:
I can't believe that no one has posted about this yet
http://blogs.esa.int/rosetta/2016/05/04/osiris-data-release-close-orbits-and-lander-delivery/
I've downloaded all the WAC data and am almost done with the NAC; I'm exercising the new version of IMG2PNG and will have browse pages with metadata and filter information available as soon as I can.
Not quite sure where on 67P this was taken. I wanna say Serqet.
https://flic.kr/p/FWXDoV
This is a four-frame mosaic taken through the OSIRIS NAC on October 14, 2014 at a distance of around 11 km.
EDIT: some more mosaics and stuff
Two frame mosaic from October 5, 2014, distance 18.79 km
https://flic.kr/p/GKnS9u
Four frame mosaic from December 13, 2014, distance 19.20 km
https://flic.kr/p/FZyksd
And a few wiggle gifs to show topography. (These are around 6 mb apiece, so I'll just leave a link for slow connections)
http://i.imgur.com/lcfBGZKt.gif
http://i.imgur.com/7lHKdY0t.gif
http://i.imgur.com/ph60QWRt.gif
BEHOLD. Rosetta OSIRIS and Navcam data for:
http://planetary.s3.amazonaws.com/data/rosetta/osiris_fat.html (July 2-August 6, 2014)
http://planetary.s3.amazonaws.com/data/rosetta/osiris_cat.html (August 6-September 10, 2014)
http://planetary.s3.amazonaws.com/data/rosetta/osiris_gm.html (September 10-October 15, 2014)
http://planetary.s3.amazonaws.com/data/rosetta/osiris_cop.html (October 15-31, 2014)
http://planetary.s3.amazonaws.com/data/rosetta/osiris_delivery.html (October 31-November 21, 2014)
http://planetary.s3.amazonaws.com/data/rosetta/osiris_escort.html (November 21, 2014-)
New stuff begins at the end of the Global Mapping Phase. I'm likely to be making slight tweaks to these pages but all the data are linked. Have at it!
EDIT: I have trouble with the FTP links to IMG and LBL files from Chrome but they work for me in Firefox.
All 1147 OSIRIS pictures of the escort phase were taken up until December 19, 2014 (one month after lander delivery).
The Escort Phase (MTP10+) by ESA nomenclature ended on December 31st, 2015 due to nominal mission end and was succeeded by the Extension Phase (MTP25+). The latest NAVCAM pictures of the Extension Phase released in the archive are from February 10th, 2016.
Here's my quick attempt at spotting Philae during its descent in the newly-released OSIRIS NAC data.
Probably didn't get all of the NAC frames with it, but that's most of them. It's enlarged 3x here with no interpolation. I used the PNGs on Planetary's site for this one. Normally, I'd use the IMGs from PSA, but I was just throwing it together for my own amusement.
Also, here. People seemed to like this kind of thing in the past.
These are mostly 8-20 minute time-steps, so they lack some of the feeling-like-you're-there quality the one I posted a while back had; that one had (I think) 1 minute time-steps. I did use the PSA data for these.
Click on the animations below for full-size versions (they're enormous).
2014-11-22
http://herobrinesarmy.com/imgurgif?i=7GrbWY0.gif
2014-11-24
http://herobrinesarmy.com/imgurgif?i=XawI9xh.gif
2014-11-28
http://herobrinesarmy.com/imgurgif?i=SuabgEU.gif
...absolutely gob-smacking, as they say. That's truly stunning work, Hero; thank you!!!
Herobrine is my hero!
new image release.
be sure to check out the shadow sequence!
http://blogs.esa.int/rosetta/2016/06/28/osiris-data-release-including-shadow-flyby/
Not sure if anybody has bothered to do this up til now, but i wrote a little tool to create 32bit floatingpoint greyscale tiff files from the original osiris IMG files in order to get the full dynamic range stored in there (they also use floats...). Though i am not sure if there is more information than in the 16bit png files. If there is interest in playing with this i can clean the code up a little and post a link.
Attached a few quick and dirty images where i tried to pull stuff out of the shadows
I wonder if it is possible to use the calibration images in the database to get rid of som of the banding artefacts in there
hi chuck0
nice images
i take to you are not aware that GDAL can convert pds img/lbl files to a geotiff
an example
Thanks for pointing me to this tool! Though since geotiffs (and the pngs in the archive) are 16bit greyscales and the original data in the IMG files is 32bit float greyscale i wasnt sure whether some of the information is being lost by doing this conversion... but after looking at quite a few of the images i converted it seems like they just chose 32 bit floats in the IMG files in order to actually store the data in its correct physical units. So a 32bit conversion is not really useful anyways and i would have been better off simply using the publicly available png files
Anyways, it was a nice exercise in getting to know the image data format they are using
the img files are not 32 bit float
they are 16 bit LSB unsigned as per the label on the img file
That label is for a NAVCAM image file, not an OSIRIS one. The OSIRIS ones are 32bit float
http://imagearchives.esac.esa.int/picture.php?/61326/category/252
Also, since i love color pictures and the global comet images show so few color variations i took a look at the zero phase angle flyby. There is quite a bit of variation across the three bands that are available (Red, Orange, Blue)... registering them is pretty straight forward since it is primarily only a rotation/translation.
It is really a pity that there is only one proper WAC OSIRIS image of that flyby.
Most recent release of OSIRIS data is finally working, so I put together a color image taken on March 3. This should be in approximately true color (using images from VIS_BLUE, VIS_GREEN, and VIS_RED), with the caveat that the saturation has been increased a little to make the subtle color variation a little more obvious.
https://flic.kr/p/RUwtyt
A couple of tries at doing some HDR work with the OSIRIS wide-angle far excursion coma studies.
https://flic.kr/p/RmwyuY
https://flic.kr/p/RmwTum
I wrote http://my-favourite-universe.blogspot.com/2018/10/67p-v-obrazech-i-od-vegy-po-rosettu.html after more than 4 year hiatus (hibernation?).
It's a first part of few (5+) articles covering mostly color imaging of 67P comet from the Rosetta spacecraft.
First part is mainly about history of cometary nuclei imaging to put Rosetta mission in to the context and it contains only 2 images of 67P on the end of article,
but on other side it also contains 6 new reprocessed images of cometary nuclei from different mission (VeGa-2, Deep Space 1 , Deep Impact, Stardust and others).
Article is in the Czech language but it should readable via Google translator (translator button is on the page) and basic info about images is already in the English language.
Here are two new images of comet 67P via Flickr taken in the beginning of the mission (5. August 2014).
First is close to real colors and it uses three images taken through orange, green and blue filter (details in the link).
https://www.flickr.com/photos/109586958@N03/30580336217
Second image has spectrally extended and enhanced colors and it's from the same sequence but now near-IR image is used as red image and orange image is used as green image in the RGB composite.
https://www.flickr.com/photos/109586958@N03/44796266554
I have also already some 50% of images for the second part of article series which should be about global mapping of 67P comet.
Images are available on my Flickr account and here are few examples in spectrally extended and enhanced colors later in the mission when comet was more active.
All of them are made using near-IR, orange and blue images as RGB composite.
24. June 2015.
https://www.flickr.com/photos/109586958@N03/45160230722
12. April 2015.
https://www.flickr.com/photos/109586958@N03/44488932514
22. November 2015
https://www.flickr.com/photos/109586958@N03/43397466090
Gorgeous work Machi! The clear outline of the night portion is always a neat sight, thanks to the coma making the background less than the usual black for completely airless bodies.
Your blog post also reminded me, if only Giotto's camera hadn't broken, I wonder what Halley would have looked like up close? What sort of resolution would have been possible? If we want a Rosetta style rendezvous mission in 2061, it's best to start planning now!
Wow. It's great work machi. I will wait for other articles
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