Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw images  |
Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
 Sep 10 2007, 09:39 PM
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#76
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 Administrator  Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454  |
Here's an attempt at stereo on the ridge. Did I do this right? I'm never really sure if I've assembled stereo images correctly; my eyes always give me topo-from-shading and I have trouble looking past that unless things REALLY leap out. The two images I used were
http://saturn.jpl.nasa.gov/multimedia/imag...iImageID=126188 and http://saturn.jpl.nasa.gov/multimedia/imag...iImageID=126214
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 10 2007, 09:58 PM
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#77
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 Senior Member Group: Moderator Posts: 3231 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
You may need to rotate them so that they are both pointed north up. However, I am not sure there is enough difference between the geometry of the two images. I am assuming you used the two frames from SATUSHINE001? The sub-s/c longitude changed by 1/2 of a degree between the two. I would wait until the WAC from ORSHIRES001 - trigger number 2901 comes down. That would make a much better stereo pair.
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Sep 10 2007, 11:27 PM
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#78
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Yes, they're the two from SATUSHINE001; the second of them was described as "ridge stereo" so I assumed that's what they were for. But after more fiddling I'm giving up, as it seems that there just isn't enough difference between them to make the point of view any different between "left" and "right." One's 10% closer to Iapetus than the other but Cassini didn't move around the limb enough to make any difference.
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 11 2007, 12:47 AM
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#79
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 IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
WOW!!!!!!!!!!!!!!!!!!!!!!! :
http://saturn.jpl.nasa.gov/multimedia/imag...iImageID=126229 http://saturn.jpl.nasa.gov/multimedia/imag...iImageID=126228 Less than 1500 km from Iapetus! Still trying to figure out what I'm seeing, for some reason my brain/eyes combination wants to see cones where I think I should be seeing craters. |
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Sep 11 2007, 12:54 AM
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#80
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Weird, the links to the images no longer work. Here is one of them that I managed to save before this happened:
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Sep 11 2007, 12:58 AM
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#81
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IMG to PNG GOD Group: Moderator Posts: 2250 Joined: 19-February 04 From: Near fire and ice Member No.: 38 |
Direct links to the JPGs apparently work:
http://saturn.jpl.nasa.gov/multimedia/imag...3/N00091840.jpg http://saturn.jpl.nasa.gov/multimedia/imag...3/N00091841.jpg http://saturn.jpl.nasa.gov/multimedia/imag...3/N00091842.jpg (as should be obvious from this string of messages I'm rather excited about this  )
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Sep 11 2007, 01:33 AM
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#82
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 Interplanetary Dumpster Diver Group: Admin Posts: 4404 Joined: 17-February 04 From: Powell, TN Member No.: 33 |
Those really are amazing!
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Sep 11 2007, 01:34 AM
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#83
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 Member Group: Members Posts: 121 Joined: 26-September 05 From: Philadelphia Member No.: 507 |
where did emily and ugordan get the hires of each filter for that crescent image? the only IR1, GRE and UV files i saw were pretty lo-res.
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Sep 11 2007, 01:52 AM
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#84
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Just stunning. The words "very old" keep coming to mind.
Whatever is making it black must be something akin to electrostatic molecular coating. Even the finest dust or other particles after all these eons would show some kind of accumulation. All we see are raw untouched ancient crater fields. -------------------- If Occam had heard my theory, things would be very different now.
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Sep 11 2007, 01:56 AM
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#85
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Member Group: Members Posts: 599 Joined: 26-August 05 Member No.: 476 |
Reminds me of the closeups of the similarly battered limb of Dione, where as Dione's surface looked like ice, Iapetus's surface looks like rock.
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Sep 11 2007, 02:01 AM
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#86
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Senior Member Group: Moderator Posts: 3231 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
QUOTE (mgrodzki @ Sep 10 2007, 06:34 PM)  where did emily and ugordan get the hires of each filter for that crescent image? the only IR1, GRE and UV files i saw were pretty lo-res. They probably did what I did, combined each color filter image with the full-res, clear filter image. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Sep 11 2007, 02:03 AM
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#87
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
N00091839.jpg is also accessible by a direct link.
The limb here is MUCH smoother than in 91840, to the "right" of the bellyband and near the start of the high latitude light terrain.
Attached thumbnail(s)
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Sep 11 2007, 02:06 AM
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#88
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Member Group: Members Posts: 121 Joined: 26-September 05 From: Philadelphia Member No.: 507 |
combined them?… that is probably where any abilty i have to do this stuff drops off. i am only combining the IR, GRE and UV into the R, G, B channels in photoshop.
< place embarrassed emoticon here > -------------------- |
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Sep 11 2007, 02:09 AM
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#89
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Senior Member Group: Moderator Posts: 3231 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
ed, where did that image come from...
 
-------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Sep 11 2007, 02:14 AM
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#90
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
Because I cannot now open the mid-sized image for the most recent narrow angle frames (as noted above), and then get to their full-rez raw frames, I opened the raw for
http://saturn.jpl.nasa.gov/multimedia/imag...3/N00091828.jpg and changed the last digits in the address bar to 39 and hit "enter". Voila. I just tried looking for the next WA frame after W00035137 and get "The Page You Requested Is Not Available", so we can work around bugs or whatever in the software but not "cheat" and get files that aren't there yet. |
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