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Size Comparism Of The Moons Of The Gas Planets, Moon Systems of the gas giants compared
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post Nov 15 2005, 12:10 AM
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Gsnorgathon
post Nov 30 2005, 12:23 AM
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Say - not to drag things off topic here - and it's sort of a size question, in the generic (not technical) sense of magnitude - but...

Has anyone here ever seen a graphical comparison of the albedos of various solar system bodies?

One's always reading about how the Moon's albedo is really quite low, so that images of the Earth and Moon have to amp up the Moon's relative brightness so it can be seen, or about how such-and-such object (comet, asteroid, TNO) is "black as coal". But I've never seen a graphical comparison, or an attempt to relate albedos other than coal or fresh snow to ordinary objects.
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JRehling
post Nov 30 2005, 01:00 AM
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QUOTE (Gsnorgathon @ Nov 29 2005, 04:23 PM)
Say - not to drag things off topic here - and it's sort of a size question, in the generic (not technical) sense of magnitude - but...

Has anyone here ever seen a graphical comparison of the albedos of various solar system bodies?

One's always reading about how the Moon's albedo is really quite low, so that images of the Earth and Moon have to amp up the Moon's relative brightness so it can be seen, or about how such-and-such object (comet, asteroid, TNO) is "black as coal". But I've never seen a graphical comparison, or an attempt to relate albedos other than coal or fresh snow to ordinary objects.
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FWIW, the different bodies receive different levels of solar illumination, so the Moon is actually brighter per unit surface area than, say, Uranus.

One thing that makes it hard to display albedos accurately is that monitors just aren't bright enough -- not even close. A white screen in a dark room is much dimmer than coal in daylight. As it happens, Uranus is about the brightness of a monitor, but the first six planets and their moons are lit significantly more brightly. So you'd have to use bar graphs or something to represent the brightnesses.

I once observed seven planets and the Moon through my telescope on the same night, sometimes getting a peek at two planets as fast as I could point (~2 min). Of course, rare (unless the Moon is one body) conjunctions let you compare two bodies at the same time through a low magnification. You can find pictures of Moon-planet occultations and compare away...
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- spaceffm   Size Comparism Of The Moons Of The Gas Planets   Nov 15 2005, 12:10 AM
- - David   Nice. I see you squeezed Mars, Pluto and Charon i...   Nov 15 2005, 12:23 AM
- - Decepticon   Excellent work! I've been wanted images l...   Nov 15 2005, 08:23 PM
- - deglr6328   Ohhhh nice! Would you consider releasing...   Nov 15 2005, 08:30 PM
|- - tedstryk   Well, considering several of these images are from...   Nov 15 2005, 11:00 PM
- - deglr6328   Tayfun Oner? Ugh, copyrighting these probe images ...   Nov 15 2005, 11:31 PM
|- - tedstryk   QUOTE (deglr6328 @ Nov 15 2005, 11:31 PM)Tayf...   Nov 15 2005, 11:40 PM
- - tasp   If this post is deemed not on topic for the thread...   Nov 16 2005, 02:31 AM
- - Decepticon   RE: Size Comparism Of The Moons Of The Gas Planets   Nov 17 2005, 01:13 PM
- - Toma B   QUOTE (tedstryk @ Nov 17 2005, 01:40 PM)Let m...   Nov 17 2005, 01:27 PM
|- - dvandorn   Yeah -- insisting you're in the clear because ...   Nov 17 2005, 02:23 PM
|- - tedstryk   QUOTE (Toma B @ Nov 17 2005, 01:27 PM)Just a ...   Nov 17 2005, 04:32 PM
- - mike   It seems odd to me too to copyright something as s...   Nov 17 2005, 04:07 PM
|- - tedstryk   QUOTE (mike @ Nov 17 2005, 04:07 PM)It seems ...   Nov 17 2005, 04:33 PM
- - dvandorn   A copyright recognizes any significant value added...   Nov 17 2005, 04:52 PM
|- - tedstryk   I was referring to the image processing - coloring...   Nov 17 2005, 05:16 PM
- - elakdawalla   Hey, now, let's all play nice while Doug is aw...   Nov 17 2005, 05:03 PM
|- - tedstryk   QUOTE (elakdawalla @ Nov 17 2005, 05:03 PM)I...   Nov 17 2005, 05:31 PM
|- - lyford   QUOTE (elakdawalla @ Nov 17 2005, 09:03 AM)Wh...   Nov 17 2005, 10:35 PM
- - Toma B   QUOTE (tedstryk @ Nov 17 2005, 07:32 PM)I am ...   Nov 17 2005, 05:33 PM
- - dvandorn   And believe me, I was simply proposing a what-if a...   Nov 17 2005, 06:23 PM
- - deglr6328   Oh goodness, now look what I've gone and done ...   Nov 17 2005, 08:44 PM
- - Bill Harris   Great discussion on copyright and intellectual pro...   Nov 17 2005, 09:01 PM
- - Phil Stooke   Maybe we could recover this thread by actually mak...   Nov 17 2005, 10:13 PM
|- - elakdawalla   QUOTE (Phil Stooke @ Nov 17 2005, 03:13 PM)Ma...   Nov 18 2005, 12:25 AM
- - Bill Harris   QUOTE A whole series is needed, really... I...   Nov 17 2005, 10:34 PM
|- - lyford   QUOTE (Bill Harris @ Nov 17 2005, 02:34 PM)I...   Nov 17 2005, 10:43 PM
|- - JRehling   Here is a scale diagram of the satellite orbital d...   Nov 19 2005, 09:52 AM
|- - Bob Shaw   Solor Sytsem? Ooops! Bob Shaw   Nov 19 2005, 01:13 PM
|- - David   QUOTE (JRehling @ Nov 19 2005, 09:52 AM)Here ...   Nov 19 2005, 04:12 PM
|- - tedstryk   I have been searching and haven't found much i...   Nov 29 2005, 06:44 PM
- - Phillip   These are wonderful posts! Here is a link to ...   Nov 18 2005, 01:56 AM
|- - elakdawalla   QUOTE (Phillip @ Nov 17 2005, 06:56 PM)Sorry ...   Nov 18 2005, 02:10 AM
|- - tedstryk   Great work! Both to Emily and spaceffm.   Nov 18 2005, 03:22 AM
- - dvandorn   First off, thanks to Phillip for his insightful re...   Nov 18 2005, 06:51 AM
|- - helvick   QUOTE (dvandorn @ Nov 18 2005, 07:51 AM)You c...   Nov 18 2005, 07:35 AM
- - lyford   OMG??!@?# These images are so incredibly bea...   Nov 18 2005, 08:11 AM
- - Bill Harris   I always had a mental image of the Galilean satell...   Nov 18 2005, 08:38 AM
|- - David   QUOTE (Bill Harris @ Nov 18 2005, 08:38 AM)I ...   Nov 18 2005, 10:09 AM
|- - elakdawalla   QUOTE (David @ Nov 18 2005, 03:09 AM)Well, th...   Nov 18 2005, 03:47 PM
|- - jski423   Here have some fun with these. Since the only pu...   Nov 18 2005, 06:36 PM
- - Toma B   QUOTE (jski423 @ Nov 18 2005, 09:36 PM)Since ...   Nov 18 2005, 07:09 PM
|- - tedstryk   QUOTE (Toma B @ Nov 18 2005, 07:09 PM)OK...   Nov 18 2005, 08:42 PM
||- - elakdawalla   QUOTE (tedstryk @ Nov 18 2005, 01:42 PM)I kno...   Nov 18 2005, 09:18 PM
||- - RNeuhaus   QUOTE (elakdawalla @ Nov 18 2005, 04:18 PM)I ...   Nov 18 2005, 09:40 PM
|- - jski423   QUOTE (Toma B @ Nov 18 2005, 08:09 PM)OK...   Nov 18 2005, 10:39 PM
- - mike   I'd like to give thanks to everyone who has pu...   Nov 18 2005, 08:14 PM
- - Patteroast   Wow, that little orbit comparison reminded me of s...   Nov 29 2005, 08:17 PM
- - Gsnorgathon   Say - not to drag things off topic here - and it...   Nov 30 2005, 12:23 AM
- - JRehling   QUOTE (Gsnorgathon @ Nov 29 2005, 04:23 PM)Sa...   Nov 30 2005, 01:00 AM
- - Gsnorgathon   QUOTE (JRehling @ Nov 30 2005, 01:00 AM)FWIW,...   Nov 30 2005, 01:38 AM


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