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Joined: Jul 2000
Posts: 4,397
b0x @dm1n
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b0x @dm1n
Joined: Jul 2000
Posts: 4,397 |
Composites are not photochops. They take a bunch of clear night shots and combine them into one. So, assuming we didn't have weather, that is what it would look like.
-Andy
Andy W.
The problem with America is stupidity.
I'm not saying there should be a capital punishment
for stupidity, but why don't we just take the safety
labels off of everything and let the problem solve itself?
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Joined: Feb 2001
Posts: 568
Veteran CEG\'er
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Veteran CEG\'er
Joined: Feb 2001
Posts: 568 |
Originally posted by IRingTwyce:
A satellite in low earth orbit (LEO) circles the globe roughly every ninety minutes. Since you'll only get a good night shot with the earth between the satellite and the sun, then as long as the shots were taken fairly close together (and not months apart) you'll always be facing the same stars regardless of the rotation of the earth below. You would only have star movement with a geosynchronous satellite that remains in a fixed position above the earth and rotates with it (but then you wouldn't have shots of different sides of the planet).
I think the full night shots are real, but possibly enhanced for more contrast and definition.
Sorry Hydramatic....I WIN! 
But a LEO bird will not give you a full-planet shot unless they are composited. The whole-planet night pictures you see are taken from at least 10,000 miles. LEO birds orbit well under 1000 miles and have a comparatively narrow FOV (and you won't see stars unless the view angle is all wrong for mapping).
If anyone felt the least bit qualified he/she could search the NASA website and find that those night shots are most likely NOAA DMSP (LEO) images stitched together into a composite photo. You can find multiple placemarkers for Google Earth out there that use this composite imagery to produce exactly what you see on this guy's website.
B. Riley
Melbourne, FL
'01 Camry LE V6/5-spd
Was: '00 Black/Tan SVT Contour #560 - Sold 3/26/03
Before that: '95 Champ/Blue Contour GL V6 ATX
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Joined: Jan 2004
Posts: 893
Veteran CEG\'er
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Veteran CEG\'er
Joined: Jan 2004
Posts: 893 |
Originally posted by Andy W.:
The night shots are real. They are very similar to what the NOAA produces. They likely are NOAA's Pictures. I knew the guy that did the composites.
-Andy
I have to disagree. Though I'm sure Africa is as desolate as it looks, some how I doubt Sicily is so happenin'
98.5 SVT FOR SALE
$5000
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Joined: Nov 2002
Posts: 253
CEG\'er
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CEG\'er
Joined: Nov 2002
Posts: 253 |
Originally posted by Blk560:
stitched together into a composite photo.
So you're saying that the entire earth isn't dark at the same time?
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Joined: Oct 2003
Posts: 3,738
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Oct 2003
Posts: 3,738 |
Originally posted by miller542:
Originally posted by Blk560:
stitched together into a composite photo.
So you're saying that the entire earth isn't dark at the same time?
i would LOVE to hear your explanation to the contrary.
~Andrew
2001 VW Jetta Wolfsburg Edition
20 valves of fury
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Joined: Feb 2004
Posts: 7,392
Addicted CEG\'er
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Addicted CEG\'er
Joined: Feb 2004
Posts: 7,392 |
Originally posted by Princess Tong Po:
Originally posted by miller542:
Originally posted by Blk560:
stitched together into a composite photo.
So you're saying that the entire earth isn't dark at the same time?
i would LOVE to hear your explanation to the contrary.
~Andrew
i take it you didn't pass the sarcasam recognition portion of the CEG entrance exam?
02 Mustang GT... Tuned by Nelsons. Low 12's, anyone? 
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Joined: Oct 2003
Posts: 3,738
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Oct 2003
Posts: 3,738 |
Originally posted by MxRacer:
Originally posted by Princess Tong Po:
Originally posted by miller542:
Originally posted by Blk560:
stitched together into a composite photo.
So you're saying that the entire earth isn't dark at the same time?
i would LOVE to hear your explanation to the contrary.
~Andrew
i take it you didn't pass the sarcasam recognition portion of the CEG entrance exam?
no, i skipped straight to the "being a sarcastic [censored] 101" section
~Andrew
2001 VW Jetta Wolfsburg Edition
20 valves of fury
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