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Saturn's Rings To Shine As Never Before
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post Sep 16 2006, 10:19 AM
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http://saturn.jpl.nasa.gov/news/features/feature20060915.cfm

Ring scientists have been waiting for this. Finally, after more than two years orbiting Saturn, the Cassini spacecraft reaches one of the ultimate vantage points. The rings should shine with majesty worthy of the "Jewel of the Solar System."
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Ant103
post Sep 17 2006, 09:25 PM
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Vision of dream... ohmy.gif

Are we in Pitch Black?

Note : we see clearly the shadow of the secondary miror of the objective of the camera on the first pic.


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ugordan
post Sep 18 2006, 06:50 AM
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QUOTE (Ant103 @ Sep 17 2006, 10:25 PM) *
Note : we see clearly the shadow of the secondary miror of the objective of the camera on the first pic.

Nope, that's a wide-angle camera frame. It's a refractor so it doesn't have mirrors. What we're seeing here is possibly the finest image of the calibration lamp and its three supporting rods in front of the optics.

Alan, that Tethys shadow image is awesome, nice catch!
Also, did you notice the complex pattern of the E ring just in the vicinity of Enceladus ("conveniently" caught just at the ring's ansa)? It looks very disturbed.

EDIT: On closer inspection, it's notable the disturbance in the E ring is similar to what Daphnis does. Cassini is above the ring plane (all the images are upside-down) so the orbital motion is counter-clockwise. This implies the ring particles in the inner side have advanced further along their orbit, after being perturbed by Enceladus. The outer edge perturbance is lagging behind the moon. Thus the "wave-like" appearance, though it's not nearly as orderly as with Daphnis, probably because the E ring isn't as confined and is also spread-out vertically. Enceladus is also much more massive than the ring-embedded moons.

This post has been edited by ugordan: Sep 18 2006, 12:35 PM


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Posts in this topic
- Sunspot   Saturn's Rings To Shine As Never Before   Sep 16 2006, 10:19 AM
- - jsheff   It doesn't say, but the Solar System Simulator...   Sep 16 2006, 12:16 PM
- - Rob Pinnegar   I am looking forward to this one too. Another in...   Sep 17 2006, 05:25 PM
|- - john_s   First images are now posted, including some remark...   Sep 17 2006, 07:52 PM
|- - ugordan   Amazing how bright the "gap" between the...   Sep 17 2006, 08:05 PM
|- - john_s   Here's the money shot - Earth (just below the ...   Sep 17 2006, 08:53 PM
- - alan   Spokes in the E-ring? http://saturn.jpl.nasa.gov/m...   Sep 17 2006, 08:54 PM
|- - paxdan   Ba-Zing!. Diamond ring. The stitched/process...   Sep 17 2006, 09:06 PM
- - volcanopele   okay, this one requires an explanation: http://sa...   Sep 17 2006, 09:14 PM
|- - paxdan   QUOTE (volcanopele @ Sep 17 2006, 10:14 P...   Sep 17 2006, 09:25 PM
- - djellison   The dynamic range involved in trying to capture th...   Sep 17 2006, 09:21 PM
- - alan   QUOTE (volcanopele @ Sep 17 2006, 04:14 P...   Sep 17 2006, 09:24 PM
|- - volcanopele   QUOTE (alan @ Sep 17 2006, 02:24 PM) Refl...   Sep 18 2006, 07:11 PM
- - Ant103   Vision of dream... Are we in Pitch Black? Not...   Sep 17 2006, 09:25 PM
|- - Jeff7   QUOTE (Ant103 @ Sep 17 2006, 05:25 PM) Vi...   Sep 18 2006, 02:42 AM
||- - Ian R   Is this a new (albeit very faint) ring between the...   Sep 18 2006, 05:19 AM
||- - djellison   QUOTE (Ian R @ Sep 18 2006, 06:19 AM) Is ...   Sep 20 2006, 09:41 AM
|- - ugordan   QUOTE (Ant103 @ Sep 17 2006, 10:25 PM) No...   Sep 18 2006, 06:50 AM
- - Ant103   And a color pic of the "pitch black" sce...   Sep 17 2006, 09:45 PM
- - JTN   In this one, what's the overexposed elliptical...   Sep 17 2006, 10:19 PM
- - Sunspot   Why would they downsample all the images to 512x51...   Sep 17 2006, 11:11 PM
|- - djellison   QUOTE (Sunspot @ Sep 18 2006, 12:11 AM) W...   Sep 18 2006, 06:59 AM
- - alan   Tethys's shadow is visible in the E-ring ...   Sep 18 2006, 12:16 AM
|- - dilo   QUOTE (alan @ Sep 18 2006, 12:16 AM) Teth...   Sep 18 2006, 11:11 AM
|- - TritonAntares   Hi, wow really impressive pics!!! Doe...   Sep 18 2006, 12:33 PM
|- - dilo   QUOTE (dilo @ Sep 18 2006, 11:11 AM) Real...   Sep 18 2006, 12:50 PM
|- - ugordan   QUOTE (dilo @ Sep 18 2006, 01:50 PM) An a...   Sep 18 2006, 01:17 PM
|- - dilo   QUOTE (ugordan @ Sep 18 2006, 01:17 PM) T...   Sep 18 2006, 06:02 PM
- - dvandorn   Wow!!!!! It occurs to me that...   Sep 18 2006, 05:36 AM
- - alan   QUOTE (Ian R @ Sep 18 2006, 12:19 AM) Is ...   Sep 18 2006, 12:57 PM
- - Ant103   Two pictures to add into this spectacular Cassini ...   Sep 18 2006, 04:58 PM
|- - dilo   Ant103, great work! Is really a little science...   Sep 18 2006, 06:09 PM
- - alan   I believe the bright spot above the E-ring in the ...   Sep 19 2006, 01:22 AM
|- - dilo   QUOTE (alan @ Sep 19 2006, 01:22 AM) I be...   Sep 19 2006, 10:18 AM
- - volcanopele   Nice catch: http://space.jpl.nasa.gov/cgi-bin/wsp...   Sep 19 2006, 01:45 AM
- - Ian R   Here is probably the best shot of the new "H-...   Sep 19 2006, 03:58 AM
- - dvandorn   The H ring seems much darker and less reflective t...   Sep 19 2006, 05:41 AM
- - alan   Handful of new images posted. This is an odd image...   Sep 19 2006, 06:47 AM
|- - dilo   Alan, I suspect is a reflection/diffusion effect f...   Sep 19 2006, 09:42 AM
- - Phil Stooke   dvandorn said "The H ring seems much darker a...   Sep 19 2006, 12:41 PM
- - SigurRosFan   Cassini's Solar Eclipse labeled (91 KB):   Sep 19 2006, 02:27 PM
|- - volcanopele   QUOTE (SigurRosFan @ Sep 19 2006, 07:27 A...   Sep 19 2006, 04:18 PM
- - remcook   I can see my house from here (or at least my home ...   Sep 19 2006, 03:40 PM
- - SigurRosFan   QUOTE The ring you labeled the "F ring" ...   Sep 19 2006, 05:07 PM
- - Sunspot   News Release: 2006-110 ...   Sep 19 2006, 10:27 PM
- - alan   This forum digests new data so fast that by the ti...   Sep 20 2006, 04:08 AM
|- - dilo   QUOTE (alan @ Sep 20 2006, 04:08 AM) This...   Sep 20 2006, 05:58 AM
- - Ian R   Sorry, but I can't resist: My apologies to ...   Sep 20 2006, 06:25 AM
- - SigurRosFan   Thanks Ian!   Sep 20 2006, 09:28 AM
- - Rob Pinnegar   As Phil has pointed out, the H ring must have a ve...   Sep 20 2006, 03:16 PM
- - ljk4-1   Image of the Day: Pale Blue Orb Earth is captured...   Sep 20 2006, 04:02 PM
- - ljk4-1   An image of Earth next to the rings and our Pale B...   Sep 21 2006, 12:24 PM
|- - paxdan   CICLOPS post regarding recent Saturn Eclipse obser...   Sep 22 2006, 10:20 AM
|- - DDAVIS   Anyone have any further composits they want to sha...   Sep 24 2006, 10:38 AM
|- - paxdan   Very very nice Don. Thanks.   Sep 24 2006, 01:54 PM
|- - DDAVIS   I have made a new version of the Saturn Eclipse vi...   Oct 3 2006, 08:51 AM
|- - paxdan   QUOTE (DDAVIS @ Oct 3 2006, 09:51 AM) I h...   Oct 3 2006, 09:12 AM
|- - ugordan   Very nice, Don! The red sun reminds me of thos...   Oct 3 2006, 09:24 AM
|- - DDAVIS   [quote name='ugordan' date='Oct 3 2006...   Oct 3 2006, 11:32 AM
|- - ugordan   The occultation lasted about 12 hours and they mor...   Oct 3 2006, 11:47 AM
|- - paxdan   zOMG   Oct 11 2006, 08:36 PM
|- - GregM   image quote not needed and removed. That is one ...   Oct 11 2006, 08:50 PM
|- - scalbers   QUOTE (paxdan @ Oct 11 2006, 08:36 PM) zO...   Sep 23 2007, 06:05 PM
- - Sunspot   There are lots more images on the RAW pages now, i...   Sep 22 2006, 10:25 PM
- - alan   Interesting sequence of G-ring images from the 19t...   Sep 23 2006, 01:13 AM
- - Ian R   Is this yet another new ring, or merely just a clu...   Sep 23 2006, 02:01 PM
- - alan   According to this Planetary Society webpage the E...   Sep 23 2006, 03:43 PM
- - GregM   There is an oppourtunity for an opposing view to b...   Sep 24 2006, 04:38 PM
- - volcanopele   This is also discussed at http://www.unmannedspace...   Oct 11 2006, 08:40 PM
- - Borek   Here history is made.   Oct 11 2006, 08:57 PM
- - alan   A different way of seeing the rings as never befor...   Oct 27 2006, 07:02 PM
|- - ugordan   Cassini already had a similar viewpoint 16 days ag...   Oct 27 2006, 07:33 PM
- - volcanopele   While we are too close for preforming a full-syste...   Oct 27 2006, 08:12 PM
- - nprev   ...wow. I am absolutely astonished by the amount o...   Nov 10 2006, 09:57 PM
|- - ugordan   This sequence has wide-angle frames looking scaled...   Nov 10 2006, 10:30 PM
|- - dilo   QUOTE (nprev @ Nov 10 2006, 10:57 PM) .....   Nov 11 2006, 06:29 AM
- - Sunspot   http://saturn.jpl.nasa.gov/multimedia/imag...eiIma...   Dec 25 2006, 10:29 AM
- - nprev   Possibly three moons...isn't the Keeler gap sa...   Dec 25 2006, 07:56 PM
|- - ugordan   Those sure don't look like Prometheus and Pand...   Dec 25 2006, 08:30 PM
|- - dilo   QUOTE (ugordan @ Dec 25 2006, 09:30 PM) T...   Dec 27 2006, 11:53 PM
- - AlexBlackwell   Emily has a very interesting blog entry today, whi...   Dec 27 2006, 07:38 PM
- - nprev   New high-res ring images down. This one is particu...   Jan 23 2007, 01:23 AM
|- - ugordan   Be careful with that image. It's part of a doz...   Jan 23 2007, 08:18 AM
- - nprev   You're right, UG, and thanks for the reality c...   Jan 26 2007, 05:03 PM
- - ugordan   I've been messing around with the Sep 15, 2006...   Aug 14 2007, 05:33 PM
- - Floyd   This orbit they have really concentrated on Saturn...   Aug 18 2007, 05:30 PM
- - The Messenger   leisure pace? surely you jest. The Cassini navigat...   Aug 19 2007, 05:51 AM


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