Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
Sep 7 2007, 05:46 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
[Moderator's note: This thread contains images from the Iapetus 2007-09-10 flyby and discussion of them. It was created by splitting this thread which contains pre-flyby discussion]
Another CL-UV3-GRN-IR1 set was posted today, though Iapetus seems to have been hiding from the green and IR filters...here's my best effort at making something from the CL and UV3 images. Lots of topography on the limb! --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Guest_AlexBlackwell_* |
Sep 7 2007, 05:48 PM
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Guests |
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Sep 7 2007, 05:48 PM
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
I actually like the color in this one best. The stretched color views tend to oversaturate Cassini Regio.
Here's a quick collage of some of the lowest and some of the highest resolution color imagery we got of Iapetus in the past 3 years: To think that in less than 4 days we'll have images with resolutions up to 1000 times better than the best shown here is exciting to say the least. -------------------- |
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Sep 8 2007, 07:32 AM
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
ISS_049IA_IAPETUS002_CIRS is now on the ground:
Clear Filter Frame: http://saturn.jpl.nasa.gov/multimedia/imag...iImageID=125907 This was supposed to include a true color filter set (BL1, GRN, and RED), but it looks like the shutter times were a tad off and the RED and IR2 images were taken after CIRS pointed away from Iapetus (it points away from its target at the start and end of observations for calibration purposes). However, there is a UV3-GRN-IR1 filter set available from some industrious individual. The auto stretch feature appears to be working now so you guys should be able to do something with this data set. Some interesting topography is visible in the crescent seen here, including the impact basin in south-central Cassini Regio, a pair of ridges to the northwest of the impact basin in north-central Cassini Regio (these things need names!!), and the equatorial ridge. You know what, that's it, I am instituting a system of nicknames for the impact basins on Iapetus. These are just nicknames. In keeping with the official naming scheme for Iapetus, characters and places from the Song of Roland, all the nicknames will be predominately French. Map upcoming. -------------------- &@^^!% 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 8 2007, 08:45 AM
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Member Group: Members Posts: 146 Joined: 23-August 06 From: Vriezenveen, Netherlands Member No.: 1067 |
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Sep 8 2007, 09:13 AM
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
-------------------- &@^^!% 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 8 2007, 10:39 AM
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Member Group: Members Posts: 288 Joined: 28-September 05 From: Orion arm Member No.: 516 |
Frosty, Sam, Yukon, Cornellis - doesn't sound french at all... Anxious about calling the whole crater triplet Snowman - or say better in french: bonhomme de neige... I think IAU will get in trouble creating names from 'The Song of Roland', simply because of a limited number of characters there! Nomenclatura in french seems to be one solution. I personally would prefer naming surface structures after their appearance, like the Snowman for instance. Bye. |
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Sep 8 2007, 02:05 PM
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Senior Member Group: Members Posts: 1669 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Nice to have CAP-Team's image and VP's names for reference. I think I can see Lionel on the terminator of the 9/7 image and maybe Jeanne near the limb. The NNE edge of Henri may be a spot where the bellyband diminishes eastward (into a flat area) and we thus would be seeing a shadowed slope along the bellyband in the image. If we can make out as far as the SW edge of Henri that could fill in a blank sliver on the map.
I'll go ahead and opine that we might eventually want a "Claudette" just to the east of "Claude" -------------------- Steve [ my home page and planetary maps page ]
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Sep 8 2007, 04:00 PM
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Member Group: Members Posts: 146 Joined: 23-August 06 From: Vriezenveen, Netherlands Member No.: 1067 |
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Sep 8 2007, 04:52 PM
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Member Group: Members Posts: 903 Joined: 30-January 05 Member No.: 162 |
May I propose refering to the large elongated crater S of Joan on the edge of Casini Regio as Papillion ??
thanx for the consideration |
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Sep 8 2007, 04:59 PM
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Frosty, Sam, Yukon, Cornellis - doesn't sound french at all... Anxious about calling the whole crater triplet Snowman - or say better in french: bonhomme de neige... Nomenclatura in french seems to be one solution. I personally would prefer naming surface structures after their appearance, like the Snowman for instance. -------------------- &@^^!% 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 8 2007, 07:03 PM
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
ugordan Your image is amazing! I appreciate the effort to make that montage.
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Sep 9 2007, 04:43 AM
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
Great News! New pics!
WOW! http://saturn1.jpl.nasa.gov/multimedia/ima...3/N00091644.jpg My sad attempt at stacking. |
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Sep 9 2007, 05:24 AM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
Great stuff! Sadly the sole long-wavelength image seems to have missed, so I had to fudge for the red channel. The version below consists of clear for red, a stack of four green images for the green (clear plus 3 polarizers), and, for blue, the UV3 channel with cosmic ray hits erased or corrected for by copying bits from the polarized channels where cosmic rays hit the sunlit part of Iapetus. Then I converted to Lab, replaced the lightness with the clear image, and went back to RGB.
That's some pretty rumply looking topography in the southern hemisphere basin! The "belly band" seems to look sorta segmented, with little north-south notches cut into it. --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 9 2007, 05:58 AM
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
The South-central Cassini Regio impact basin ("Henri") appears to have a central massif, which matches with the morphology of similar basins in north-central Cassini Regio ("Aimee") and northeastern Cassini Regio ("Joan").
Not sure what is up with the equatorial ridge. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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