Rev 151 - Jul 21-Aug 12, 2011 - Saturn storm, Rhea |
Unmanned Spaceflight.com > Outer Solar System > Saturn > Cassini Huygens > Cassini's ongoing mission and raw images  |
Rev 151 - Jul 21-Aug 12, 2011 - Saturn storm, Rhea |
 Jul 26 2011, 05:52 AM
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 Senior Member  Group: Moderator Posts: 3232 Joined: 11-February 04 From: Tucson, AZ Member No.: 23  |
The Looking Ahead Article was posted last week:
http://www.ciclops.org/view/6828/Rev151?js=1 One of the more interesting highlights is an observation of HD189733, which is host to a Jupiter-sized exoplanet. The observation on July 23 was designed for VIMS to detect a transit by that planet across the disc of its parent star. Another observation on July 24 would look at the secondary eclipse, when the planet passes behind the star. The observation from July 23 is on the ground and the raw images are on the JPL raw images page. http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=240711 This is one of many frames taken. HD189733 is the brightest star in the image in the upper left quadrant of the frame. The two bright stars in the upper right quadrant are (from left to right) TYC 2141-1146-1 and HD345464. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
The Gish Bar Times - A Blog all about Jupiter's Moon Io |
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Jul 26 2011, 07:23 AM
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Rover Driver Group: Members Posts: 1015 Joined: 4-March 04 Member No.: 47 |
Neat! I hope the instruments are good enough to detect the transit.
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Jul 26 2011, 04:44 PM
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 Director of Galilean Photography Group: Members Posts: 896 Joined: 15-July 04 From: Austin, TX Member No.: 93 |
Some info on HD 189733:
http://en.wikipedia.org/wiki/HD_189733 Looks like a mag. 10 star. Should be pretty easy to get plenty of flux off of that! -------------------- Space Enthusiast Richard Hendricks
-- "The engineers, as usual, made a tremendous fuss. Again as usual, they did the job in half the time they had dismissed as being absolutely impossible." --Rescue Party, Arthur C Clarke Mother Nature is the final inspector of all quality. |
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Jul 26 2011, 08:18 PM
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 Member Group: Members Posts: 655 Joined: 22-January 06 Member No.: 655 |
Thanks Volcanopele for the continuing looking ahead posts, always interesting.
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Jul 26 2011, 08:40 PM
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Member Group: Members Posts: 470 Joined: 24-March 04 From: Finland Member No.: 63 |
Are we going to gather some new information about the exoplanet by observing from a vantage point far away from Earth?
-------------------- Antti Kuosmanen
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Jul 26 2011, 09:32 PM
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 Senior Member Group: Members Posts: 1417 Joined: 26-July 08 Member No.: 4270 |
If the transit timing is accurate enough, you can constrain the actual orientation of the orbit of the planet by watching it from Cassini's perspective and Earth's perspective. HD 189733 b's shadow is a moving one. But you'll need very high accuracy. I would be very impressed if we have that capability with the aforementioned assets and baseline.
-------------------- -- Hungry4info (Sirius_Alpha)
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Jul 27 2011, 05:27 PM
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Newbie Group: Members Posts: 17 Joined: 4-March 10 Member No.: 5240 |
QUOTE (akuo @ Jul 26 2011, 09:40 PM)  Are we going to gather some new information about the exoplanet by observing from a vantage point far away from Earth? I believe the idea was to get IR spectra, at wavelengths unavailable from the ground, to give some information on the composition of the exoplanet's atmosphere. That's much more difficult than just detecting the transit, and I think this was actually done as a proof of concept. |
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Jul 30 2011, 04:39 PM
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Member Group: Members Posts: 910 Joined: 4-September 06 From: Boston Member No.: 1102 |
One of the best Icy Moon shots ever--and in color. I'm sure someone will put it together and rotate it 90 degrees. At least 5 moons!!!!!
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Jul 31 2011, 05:44 AM
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 Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
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Jul 31 2011, 11:43 AM
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Senior Member Group: Members Posts: 1417 Joined: 26-July 08 Member No.: 4270 |
 Wow. -------------------- -- Hungry4info (Sirius_Alpha)
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Jul 31 2011, 06:19 PM
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 Senior Member Group: Members Posts: 2081 Joined: 13-February 10 From: Ontario Member No.: 5221 |
You can even see a bit of Herschel on Mimas, just barely.
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Aug 4 2011, 04:04 PM
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 Senior Member Group: Moderator Posts: 2785 Joined: 10-November 06 From: Pasadena, CA Member No.: 1345 |
Swirly clouds!
http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=240924 http://saturn.jpl.nasa.gov/photos/raw/rawi...?imageID=240955 -------------------- Some higher resolution images available at my photostream: http://www.flickr.com/photos/31678681@N07/
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Aug 8 2011, 01:54 AM
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Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
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Aug 8 2011, 03:43 PM
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Lord Of The Uranian Rings Group: Members Posts: 798 Joined: 18-July 05 From: Plymouth, UK Member No.: 437 |
A slightly better attempt at a R-G-B composite, taken through the WAC:
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Aug 8 2011, 05:03 PM
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 Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Here's my shot at it:
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