Hubble: New Map Of Pluto, and new measurements of Charons size |
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Hubble: New Map Of Pluto, and new measurements of Charons size |
 Sep 12 2005, 04:38 PM
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#1
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 Member  Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471  |
-------------------- - blue_scape / Nico -
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Sep 13 2005, 01:23 AM
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#2
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Member Group: Members Posts: 509 Joined: 2-July 05 From: Calgary, Alberta Member No.: 426 |
It is interesting to compare this new map with some of the previous ones. Some of the major features are recognizable, but the differences are certainly there.
Of course the fact that this one's in colour, while some of the previous ones were greyscale, complicates the comparison. Incidentally, is Pluto's "Greenwich Meridian", zero degrees longitude, centred directly under Charon in the sky? I should know this one, really. |
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Sep 13 2005, 01:58 AM
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#3
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 Senior Member Group: Admin Posts: 4763 Joined: 15-March 05 From: Glendale, AZ Member No.: 197 |
Where's the image? It's not in the original article, or at least it's not appearing for me.
-------------------- If Occam had heard my theory, things would be very different now.
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Sep 13 2005, 02:20 AM
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#4
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 Member Group: Members Posts: 809 Joined: 11-March 04 Member No.: 56 |
QUOTE (Rob Pinnegar @ Sep 13 2005, 01:23 AM) It is interesting to compare this new map with some of the previous ones. Some of the major features are recognizable, but the differences are certainly there. Of course the fact that this one's in colour, while some of the previous ones were greyscale, complicates the comparison. Incidentally, is Pluto's "Greenwich Meridian", zero degrees longitude, centred directly under Charon in the sky? I should know this one, really.  IIRC, Pluto and Charon are tidally locked to one another, and rotate around a mutual barycenter. Since the zero meridian of tidally locked moons (which is most of them) is traditionally placed in the middle of the subplanetary hemisphere, that would make sense for Pluto too, I suppose. Which makes me think: one way of getting Pluto out of the list of planets is not to redefine it as an asteroid, minor planet, KBO... but as a moon -- since one of the common characteristics of most moons is tidal locking so that one face is always toward the primary, Pluto and Charon might be regarded as moons of each other -- a double moon, rather than a double planet! Okay, I know that the IAU isn't going to buy that one... |
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Sep 13 2005, 02:51 AM
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#5
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Senior Member Group: Members Posts: 1276 Joined: 25-November 04 Member No.: 114 |
New Image?
Link? |
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Sep 13 2005, 10:19 AM
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#6
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Member Group: Members Posts: 204 Joined: 29-June 05 Member No.: 421 |
Abyss! Abyss! I see an abyss!
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Sep 13 2005, 10:35 AM
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#7
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 Special Cookie Group: Members Posts: 2168 Joined: 6-April 05 From: Sintra | Portugal Member No.: 228 |
QUOTE (tfisher @ Sep 13 2005, 10:19 AM) Abyss! Abyss! I see an abyss! Me too!... 
-------------------- "Ride, boldly ride," The shade replied, "If you seek for Eldorado!"
Edgar Alan Poe |
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Sep 13 2005, 01:22 PM
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#8
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 Member Group: Members Posts: 753 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
Noi image is appearing for me either - but I searched the Hubble site and found this cool movie of Neptune: Neptune rotating with moons
-------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
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Sep 13 2005, 02:20 PM
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#9
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Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
And a brand-new press release!!!
Boomerang Nebula (ESO 172-07) http://hubblesite.org/newscenter/newsdesk/...2005/25/image/a -------------------- - blue_scape / Nico -
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Sep 13 2005, 03:00 PM
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#10
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 Member Group: Members Posts: 345 Joined: 2-May 05 Member No.: 372 |
The map doesn't show up for me, either.
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Sep 13 2005, 05:24 PM
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#11
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 Member Group: Members Posts: 154 Joined: 17-March 05 Member No.: 206 |
Where is the new Hubble image? Its not in the BBC article or the post...
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Sep 13 2005, 05:35 PM
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#12
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 Member Group: Members Posts: 510 Joined: 17-March 05 From: Southeast Michigan Member No.: 209 |
Nor at STSCI - you'd think news like this would at least be there...
-------------------- --O'Dave
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Sep 13 2005, 05:36 PM
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#13
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Member Group: Members Posts: 531 Joined: 24-August 05 Member No.: 471 |
-------------------- - blue_scape / Nico -
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Sep 13 2005, 05:57 PM
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#14
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Member Group: Members Posts: 345 Joined: 2-May 05 Member No.: 372 |
I was just about to link to that site.
 Found it via Google News
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Sep 13 2005, 09:30 PM
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#15
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 Senior Member Group: Members Posts: 2530 Joined: 20-April 05 Member No.: 321 |
QUOTE (Rob Pinnegar @ Sep 12 2005, 06:23 PM) It is interesting to compare this new map with some of the previous ones. Some of the major features are recognizable, but the differences are certainly there. Of course the fact that this one's in colour, while some of the previous ones were greyscale, complicates the comparison. The previous HST map was in UV. This map seems to imply two or three wavelengths, although there was certainly some number-churning that led to its creations, and we can't take it to be the product simply of a few single-filter images. The occultation map was, I think, the product of "clear" imagery; I'm not sure if it was even a single instrument that was used to produce it or many. All told, these maps could be integrated to produce a yet-finer map -- assuming that the surface has not changed much since 1990. However, hats off to the team behind the latest map. It's pretty impressive, and barring something nice from the not-yet-existent Webb Space Telescope, will be about as good a look as we get of Pluto until NH gets close. |
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