Updated Titan Map |
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Updated Titan Map |
 Oct 27 2007, 06:52 PM
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#151
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 Senior Member  Group: Members Posts: 3534 Joined: 1-October 05 From: Croatia Member No.: 523  |
QUOTE (alan @ Oct 27 2007, 08:19 PM)  Some new images of Titan were taken on October 22. They cover the lowest resolution area on the latest Titan maps. http://saturn.jpl.nasa.gov/multimedia/imag...iImageID=130136 And here's a quazi-flatfielded version of that image along with a really dodgy enhancement:   Edit: updated with a slightly better enhanced image. -------------------- |
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Nov 18 2007, 02:52 PM
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#152
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Member Group: Members Posts: 567 Joined: 4-September 06 From: Boston Member No.: 1102 |
Maping question. For locked moons, is 0 degrees on the maps the direction towards Saturn? What is the convention for this sort of thing? Hope this is not too stupid a question.
-------------------- Floyd
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Nov 18 2007, 04:45 PM
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#153
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 Member Group: Members Posts: 738 Joined: 5-March 05 From: Boulder, CO Member No.: 184 |
Yes that is how I understand it with zero degrees longitude towards Saturn...
-------------------- Steve [ my planetary maps page ]
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Nov 18 2007, 05:41 PM
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#154
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Senior Member Group: Members Posts: 1510 Joined: 20-April 05 Member No.: 321 |
QUOTE (Floyd @ Nov 18 2007, 06:52 AM) Maping question. For locked moons, is 0 degrees on the maps the direction towards Saturn? What is the convention for this sort of thing? Hope this is not too stupid a question. That's the convention everywhere from Luna to Charon. Given nutation, etc., the details may be more complicated, but that's the gist. |
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Nov 18 2007, 06:55 PM
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#155
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Senior Member Group: Members Posts: 4507 Joined: 5-April 05 From: Canada Member No.: 227 |
That is indeed the basic idea, but because of orbital eccentricity etc which makes the sub-planet point move around a bit the actual zero point is defined relative to a specific feature on the surface. That has not yet been done for Titan. The feature in question does not have to be on zero longitude, but zero is measured relative to it.
Phil -------------------- ... because the Solar System ain't gonna map itself.
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Nov 18 2007, 09:56 PM
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#156
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 Senior Member Group: Members Posts: 2248 Joined: 15-January 05 From: center Italy Member No.: 150 |
Hey Gordan, what do you think of this further enhancement of your last version? I see a lot of details, are they real?
-------------------- - Marco -
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Nov 18 2007, 10:58 PM
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#157
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Member Group: Members Posts: 567 Joined: 4-September 06 From: Boston Member No.: 1102 |
Thank you for the responses to my map question. Floyd
-------------------- Floyd
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Nov 19 2007, 01:42 AM
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#158
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 Member Group: Members Posts: 393 Joined: 23-February 07 From: Occasionally in Columbia, MD Member No.: 1764 |
QUOTE (Phil Stooke @ Nov 18 2007, 01:55 PM) That is indeed the basic idea, but because of orbital eccentricity etc which makes the sub-planet point move around a bit .... Yeah - Subsaturn point wobbles back and forth about 3 degrees in longitude over the course of an orbit. This all assumes strictly synchronous rotation - turns out that may not quite hold (see my DPS abstract) - may be a bit of a seasonal swing in longitude too - so things may get a little complicated. |
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Nov 19 2007, 06:23 AM
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#159
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 Senior Member Group: Members Posts: 3112 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
Here's a question that seems appropriate in this context:
What is thought to be the primary cause of nutation in planetary moons? Is it gravitational, and does nutation by gravitational perturbance require a body to be significantly non-homogenous? Or is it thought to be remnant motion imparted by large impacts? Or is it a range of influences, no one of which can be cited genercially as "primary"? I ask because while you might expect to see impact-related nutation on a scarred body like the Moon, you don't seem to see large basins on Titan whose formation could have been expected to toss a body out of kilter... -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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Nov 20 2007, 09:56 AM
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#160
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Senior Member Group: Members Posts: 1869 Joined: 20-February 05 Member No.: 174 |
Planetary photojournal released a nice tif format 80 degree (approx.) phase titan pic yesterday.
I ran a bandpass filtering on it to being out every last bit of surface detail in the data. The atmosphere seems to be pretty featureless in this band, though there's general east-west diffuse streakiness in the north <less visible in the south> at high lattitudes.
Attached thumbnail(s)
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Jan 10 2008, 01:13 AM
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#161
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 Senior Member Group: Members Posts: 1620 Joined: 20-November 04 From: Iowa Member No.: 110 |
Will the CICLOPS map page be updated this month?
http://ciclops.org/maps.php |
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Jan 10 2008, 10:53 AM
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#162
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 Member Group: Members Posts: 275 Joined: 11-December 07 From: Dar es Salaam, Tanzania Member No.: 3978 |
QUOTE (dvandorn @ Nov 19 2007, 09:23 AM) I ask because while you might expect to see impact-related nutation on a scarred body like the Moon, you don't seem to see large basins on Titan whose formation could have been expected to toss a body out of kilter... -the other Doug Perhaps there USED to be a basin but has been literally wiped of the face of Titan. Imagine trying to identify the Chicluxub crater (the Dinosaur killer?) here on Earth from space using such imagery as those being produced by Cassini. Not as easy as it seems, eh? -------------------- |
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Jan 11 2008, 03:16 AM
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#163
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 Member Group: Members Posts: 158 Joined: 6-March 07 From: texas Member No.: 1828 |
on a related topic, does anyone have or knowlocation of a Titan Radar Planning chart showing
swath locations? most curious where the 4-year tour mapping coverage will get us to... paul -------------------- Dr. Paul Schenk, Lunar and Planetary Institute, Houston TX
http://stereomoons.blogspot.com; http://www.youtube.com/galsat400; http://www.lpi.usra.edu/science/schenk/ |
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Jan 11 2008, 12:59 PM
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#164
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 SewingMachine Group: Members Posts: 293 Joined: 27-September 05 Member No.: 510 |
I'm not sure where I stumbled across this a while back, but here's an old map of the planned RADAR swaths (looks like early 2005):
-------------------- ...if you don't like my melody, i'll sing it in a major key, i'll sing it very happily. heavens! everybody's all aboard? let's take it back to that minor chord...
Galileo Flickr Gallery |
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Jan 11 2008, 01:07 PM
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#165
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SewingMachine Group: Members Posts: 293 Joined: 27-September 05 Member No.: 510 |
Using VP's awesome new map, we can revisit PIA09035. All those noodles are starting to make me hungry.
-------------------- ...if you don't like my melody, i'll sing it in a major key, i'll sing it very happily. heavens! everybody's all aboard? let's take it back to that minor chord...
Galileo Flickr Gallery |
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Lo-Fi Version | Time is now: 18th May 2013 - 03:27 PM |
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