Cassini-Huygens *2* - ...more Saturn/Titan...

Palomar · 2004-11-29 11:13:28

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … Adjectives fail to describe this splendor~*~

*Definitely one of the best C-H images yet, IMO.

-*-

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … e]Terrific pic of Enceladus

--Cindy

Palomar · 2004-11-30 09:06:56

(Be sure to check out the pics in the post above this one -- especially the 1st; it's beyond beautiful)

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … age]Gazing Down

*Is an angled shot I've been waiting for. :up:

Cassini pierced the ring plane and rounded Saturn on Oct. 27, 2004, capturing this view of the dark portion of the rings. A portion of the planet's atmosphere is visible here, as is its shadow on the surface of the rings.

*Anyone for skating? :laugh:

--Cindy

REB · 2004-11-30 12:11:27

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … ge]Another Source of that latest Titan Image

The dark features still look Liquid to me. I see islands, a coastline, and even hints of rivers. Of course, I might be seeing things.

Yang Liwei Rocket · 2004-11-30 12:43:11

what a picture !!

http://ciclops.lpl.arizona.edu/media/ir … 1058_1.jpg

Mimas against the cool, blue-streaked backdrop of Saturn’s northern hemisphere.

shadows cast by rings arc gracefully across the planet, fading into darkness on Saturn’s night side.

:band:

we might have got these ring shots before but the Tiff is even better,
Beware it's a big file with a lot of info

http://ciclops.lpl.arizona.edu/media/ir … 1058_3.tif

GraemeSkinner · 2004-12-02 05:09:11

http://photojournal.jpl.nasa.gov/jpegMo … jpg]Follow the arrow the article says.

Original Caption Released with Image:
As Cassini scientists work to understand the newly-exposed surface of Saturn's largest moon, Titan, they have found an interesting arrowhead-shaped feature, shown in the center of this synthetic aperture radar image.

Graeme

Palomar · 2004-12-02 06:25:25

http://photojournal.jpl.nasa.gov/jpegMo … jpg]Follow the arrow the article says.
Original Caption Released with Image:
As Cassini scientists work to understand the newly-exposed surface of Saturn's largest moon, Titan, they have found an interesting arrowhead-shaped feature, shown in the center of this synthetic aperture radar image.
Graeme

*Interesting...but so indistinct. It's like trying to see something definable in a pile of charcoal ashes, as these images go. Would be more curious for additional information as to what's going on in the minds of the scientists when they're examining this.

--Cindy

::EDIT:: The caption accompanying that image at the C-H homepage says this:

The feature is approximately 30 kilometers (19 miles) across, and it is formed from two straight lines that intersect. Looking more closely, one can distinguish other linear features that seem to follow the left side of the "arrow" and perhaps interact in some way with a dark spot. Straight lines may represent fractures or faults in the icy crust, or they may form from material that has flowed or has been shaped by wind, either recently or in the distant past.
The area shown is about 115 kilometers (71 miles) wide and 170 kilometers (106 miles) high and is located near 52 degrees north latitude and 73 degrees west longitude. This radar image is part of a larger strip of data acquired on Oct. 26, 2004, as Cassini passed Titan at a distance of 1,200 kilometers (746 miles).

Yang Liwei Rocket · 2004-12-02 07:05:26

That Titan picture is very nice wonder what that feature is ???

knotted ringlet within the Encke Gap

http://ciclops.lpl.arizona.edu/media/dr … 1043_1.jpg

Palomar · 2004-12-02 07:30:09

knotted ringlet within the Encke Gap
http://ciclops.lpl.arizona.edu/media/dr … 1043_1.jpg

*Terrific! That's the best pic I've yet seen of knotted features.

(:edit: Here's some info from the caption accompanying the pic YL Rocket posted, from the mission homepage:)

Cassini took this image of the Encke Gap in Saturn's Rings. It's a small division 300 km (190 miles) wide near the outer edge of the rings. A tiny moon called Pan orbits within this region, maintains the gap, and ties the particles into this knotted shape with its gravity. The image was taken while Cassini was 807,000 km (501,000 miles) away from Saturn.

--Cindy

::EDIT:: http://saturn.jpl.nasa.gov/cgi-bin/gs2. … mage]Night Side Ringplane Fabulous! :up: Love those rings. Honestly...they seem to "shimmer" if you sweep your gaze across them while not focusing too hard.

Palomar · 2004-12-03 15:31:24

http://www.universetoday.com/am/publish … 4]Fabulous picture of Prometheus & the F Ring

Cassini took this amazing photograph of Prometheus, one of Saturn's small shepherd moons as it's tugging material away from the planet's F ring. The F ring resolves into 5 separate strands, and you can see how tiny Prometheus has a stream of material flowing towards it.

*Definitely the best-yet image of Prometheus and the F Ring from Cassini. Tiny Prometheus, only 63 miles long.

Potato-shaped Prometheus is seen here, connected to the ringlets by a faint strand of material. Imaging scientists are not sure exactly how Prometheus is interacting with the F ring here, but they have speculated that the moon might be gravitationally pulling material away from the ring. The ringlets are disturbed in several other places. In some, discontinuities or "kinks" in the ringlets are seen; in others, gaps in the diffuse inner strands are seen

--Cindy :up:

::EDIT::

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … image]Tilt & Whirl -- includes movie. Aw darn...movie won't download for me. :-\

GraemeSkinner · 2004-12-04 03:05:09

http://www.universetoday.com/am/publish … 4]Fabulous picture of Prometheus & the F Ring
Cassini took this amazing photograph of Prometheus, one of Saturn's small shepherd moons as it's tugging material away from the planet's F ring. The F ring resolves into 5 separate strands, and you can see how tiny Prometheus has a stream of material flowing towards it.
*Definitely the best-yet image of Prometheus and the F Ring from Cassini. Tiny Prometheus, only 63 miles long.
Potato-shaped Prometheus is seen here, connected to the ringlets by a faint strand of material. Imaging scientists are not sure exactly how Prometheus is interacting with the F ring here, but they have speculated that the moon might be gravitationally pulling material away from the ring. The ringlets are disturbed in several other places. In some, discontinuities or "kinks" in the ringlets are seen; in others, gaps in the diffuse inner strands are seen
--Cindy :up:
::EDIT::
http://saturn.jpl.nasa.gov/home/index.cfm]Tilt & Whirl -- includes movie. Aw darn...movie won't download for me. :-\

I have to say thats one of the best images I've seen in a long time, gives you so much to think about. Will be keeping a close eye on this one I think

Graeme

Yang Liwei Rocket · 2004-12-04 12:09:54

very good images

Palomar · 2004-12-07 11:06:23

*Detailed information about upcoming Huygens release from Cassini, getting to Titan, etc. (some is repeated info but some is not --). From spaceref.com:

On 17 December the orbiter will be placed on a controlled collision course with Titan in order to release Huygens on the proper trajectory, and on 21 December (some dates and times are subject to minor adjustment for operational reasons, except the entry time on 14 January which is know to within an accuracy of under 2 minutes) all systems will be set up for separation and the Huygens timers will be set to wake the probe a few hours before its arrival at Titan.
The Huygens probe is due to separate on the morning of 25 December at about 05:08 CET. Since the Cassini orbiter will have to achieve precise pointing for the release, there will be no real-time telemetry available until it turns back its main antenna toward Earth and beams the recorded data of the release. It will take over an hour (67 min) for the signals to reach us on Earth. The final data confirming the separation will be available later on Christmas Day.
After release, Huygens will move away from Cassini at a speed of about 35 cm per second and, to keep on track, will spin on its axis, making about 7 revolutions a minute. Huygens will not communicate with Cassini for the whole period until after deployment of the main parachute following entry into Titan's atmosphere. On 28 December Cassini will then manoeuvre off collision course to resume its mission and prepare itself to receive Huygens data, which it will record for later playback to Earth.
Huygens will remain dormant until a few hours before its arrival at Titan on 14 January. The entry into the atmosphere is set for 11:15 CET. Huygens is planned to complete its descent in about two hours and 15 minutes, beaming back its science data to the Cassini orbiter for replay to Earth later in the afternoon. If Huygens, which is designed as an atmospheric probe rather than a lander, survives touchdown on the surface, it could deliver up to 2 hours of bonus data before the link with Cassini is lost.
Direct radio signals from Huygens will reach Earth after 67 minutes of interplanetary travel at the speed of light. An experiment has been set up by radio scientists that will use an array of radio telescopes around the Pacific to attempt to detect a faint tone from Huygens. If successful, early detection is not expected before around 11:30 CET.

*Also: http://saturn.jpl.nasa.gov/cgi-bin/gs2. … ]Intricate C Ring Details

--Cindy

Palomar · 2004-12-08 10:45:14

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … e]Majestic, YES

*...and what an understatement.

The planet's nighttime atmosphere looms ahead -- an excellent place to search for storms and lightning.

Hopefully they'll find plenty of it.

-*-

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … efore-seen features of Iapetus

...visible for the first time, including many dark spots, and a sharper view of a dark, circular structure that was first seen at very low resolution by NASA's Voyager 1 in 1980. Iapetus diameter is 1,436 kilometers (892 miles).
The image shows mainly the night side of Iapetus; part of the far brighter sunlit side appears at the right and is overexposed due to the long integration time of 180 seconds.

-*-

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … age]Waning Iapetus

These views show parts of the moon’s anti-Saturn side – the side that faces away from the ringed planet--which will not be imaged again by Cassini until Sept., 2007.

*Impact craters, mountains, etc. Are sharpest views of Iapetus yet.

These mountains were originally detected in Voyager images, and might compete in height with the tallest mountains on Earth, Jupiter's moon Io and possibly even Mars. Further observations will be required to precisely determine their heights. Interestingly, the line of peaks is aligned remarkably close to the equator of Iapetus.

--Cindy

Yang Liwei Rocket · 2004-12-09 15:30:27

Those Iapetus photos are great

another view of C ring

http://ciclops.lpl.arizona.edu/media/dr … 1004_1.jpg

alan · 2004-12-09 18:22:09

The color images of Iapetus remind me of ice cream topped with hot fugde. mmm

Palomar · 2004-12-10 08:24:48

*Hi YL Rocket! Love that image. Hi Alan...that's -not- helping my diet. :laugh:

-*-

Reminder: The next Titan flyby (Titan-B) is on Monday, December 13! :band:

Here's the Titan-B Flyby Mission Description (PDF):

http://saturn.jpl.nasa.gov/multimedia/p … ...206.pdf (It wouldn't open for me...)

It'll also make its closest pass to
http://saturn.jpl.nasa.gov/cgi-bin/gs2. … mage]Dione (most previous image).

-*-

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … mage]Rings & 3 Moons

*I had to turn my monitor's brightness and contrast up quite a bit to pick Prometheus out of the photo. Nice!

--Cindy

djellison · 2004-12-10 10:49:59

NONE of the images from saturn.jpl.nasa.gov work for me - i.e. no images on web-pages, none in the raw pages etc.

I'm using Firefox. Any pointers

Doug

alan · 2004-12-10 22:05:48

Titan B flyby animation has been posted at Cassini site. "Small" version is 23Mbyte.

Palomar · 2004-12-13 13:22:41

*Titan flyby today!

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … image]This map (Planned Image Coverage) of Titan's surface illustrates the regions that will be imaged by the Cassini spacecraft during the spacecraft's second close flyby of Titan on Dec. 13, 2004.

-*-

*First flyby of Dione planned for tomorrow, Dec. 14. C-H will fly within 50,600 miles of Dione.

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … image]This map (Planned Image Coverage) of Saturn's moon Dione, generated from Cassini images taken during the spacecraft's first two orbits of Saturn, illustrates the imaging coverage planned during Cassini's first Dione flyby on Dec. 14, 2004.

(In October 2005, Cassini will fly within 311 miles of Dione)

-*-

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … e]Plateaus & Gaps Those rings...

-*-

Doug wrote:

NONE of the images from saturn.jpl.nasa.gov work for me - i.e. no images on web-pages, none in the raw pages etc.

Wow, what a bummer! You can't see *any* of these images?? Sorry, I don't know about Firefox and related stuff, so I can't help. :-\

--Cindy

Yang Liwei Rocket · 2004-12-13 19:02:37

The information & photos have been great on this mission
PS
wonder what Titan will be like ? The ESA scientist is answering some questions
The universetoday site has a question session, ask Lebreton about the Cassini-Huygens landing on Titan

http://www.esa.int/export/SPECIALS/Cass … D1E_0.html

http://www.universetoday.com/forum/inde … topic=5612

you don't need membership to post

just ask whatever

Palomar · 2004-12-14 07:09:57

*Info rolling in from Titan-B Flyby:

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … =image]2nd Titan Targeted Flyby #1

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … e=image]#2

http://saturn.jpl.nasa.gov/cgi-bin/gs2. … e=image]#3

*Nice images. Wish I had more time for additional comments. C-H on its way to Dione.

--Cindy

Palomar · 2004-12-15 12:31:10

http://www.universetoday.com/am/publish … 2004]First Dione flyby pic I've found...

*...and oddly enough it's not at the C-H mission homepage. ??? They haven't posted anything new there since yesterday. :hm:

[Will ::EDIT:: this post as more pics roll in]

--Cindy

Palomar · 2004-12-15 13:34:09

*Info rolling in from Titan-B Flyby:
http://saturn.jpl.nasa.gov/cgi-bin/gs2. … =image]2nd Titan Targeted Flyby #1
http://saturn.jpl.nasa.gov/cgi-bin/gs2. … e=image]#2
http://saturn.jpl.nasa.gov/cgi-bin/gs2. … e=image]#3
*Nice images. Wish I had more time for additional comments. C-H on its way to Dione.
--Cindy

*Here's more from Monday's Titan-B flyby (which also weren't hosted at the C-H mission page :hm: Got to dig around various sites to get these pics!):

http://www.saturntoday.com/news/viewsr.html?pid=14798]I simply LOVE pics of Titan backlit :up: Doesn't it look like a total solar eclipse -- except without the extensive corona? But lovely in its own right, of course -- regardless of the comparison.

-*-

Titans]http://www.saturntoday.com/news/viewsr.html?pid=14799]Titan's atmosphere

--Cindy

Shaun Barrett · 2004-12-15 20:19:14

Thanks for those maps you linked for us, Cindy, on Dec. 13th at 14:22, showing the regions of Titan and Dione to be imaged at various resolutions.
Unfortunately for the red/green colour-challenged, these maps are nearly useless. On the http://saturn.jpl.nasa.gov/cgi-bin/gs2. … mage]Titan Map, I can only be sure of the blue line.
The 1km/pixel line looks green to me but I can't see any such line against the grey-toned Titanian surface.
The 400 m/pixel line looks like a thin red line to me but, again, I can't see any such line on the map.
The oblong which includes the Huygens landing site looks like a thick red line to me, as does the small square to its right, but there appears to be no reference to a 'thick' red line in the key.
The 200 m/pixel line looks a kind of fawny-khaki or washed out greeny-brown to me and I can't see any such coloured line on the map.
The largest area delineated on the map appears to be bordered by a bright limey-green line. But I see no such line in the key.
Result: Complete confusion! I have no idea what the map is trying to tell me, except for the large area to be imaged at 9 km/pixel and the point where Huygens will land.

I know only about 8% of males and 0.5% of females have colour-tuning problems, and that's not enough to induce people like NASA to consider such people when producing maps like this, but it is very frustrating for those of us with the colour vision problem.

Just a different perspective for those of you unfamiliar with the trials of partial 'colour-blindness'.

[ Interestingly, in cases like this, the very small area of the colour is crucial in causing the trouble. The larger the area of colour presented to an anomalous trichromat, the less likely that person is to mistake it for another colour.
One small consolation for us colour-challenged people is that we're much harder to fool with camouflage. Subconsciously, we've learned not to trust our perception of colours and tend to 'see through' camouflage to the underlying shapes and forms. I've noticed I sometimes pick up birds and bird nests in trees quicker than my colour-normal companions, which may be an example of this slightly different perception.]

GraemeSkinner · 2004-12-16 00:47:24

*Shaun* what if you took the image into something like photoshop, changed it all to greyscale and tweeked the levels a bit?

Graeme

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