Whole Earth images, Does any satellite provide regularly updated ones? |
Whole Earth images, Does any satellite provide regularly updated ones? |
Mar 8 2007, 04:17 PM
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#1
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
There are tons of Earth observing satellites producing gorgeous detailed images, but I'm trying to figure out if any of them is capable of producing full-globe images of Earth on some regularly updated basis. Does anyone here know of such a beast? Are there weather monitoring satellites that do this?
--Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Apr 24 2007, 09:21 AM
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#2
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Senior Member Group: Members Posts: 1870 Joined: 20-February 05 Member No.: 174 |
"...I think the geostationary satellites see up to about 72 degrees latitude...." Yes, that sounds right.
My favorite full-disc (or nearly) images of Earth are from Apollo 4, where an automated film camera filled a film magazine with images looking out a window at a fattish crescent Earth. Some are partially cut off by camera field of view or the window-frame. It should be quite possible to work those up into a pretty spectacular high-resolution (scanned film) movie like sequence showing a little Earth rotation/spacecraft-motion/illumination shift during the sequence. I have no idea long the sequence took but I'm sure (I'm sure I hope...) the data is online. My other fav sequence is 2 image sequences from Surveyor 7 on the rim of Tycho. The Earth was low enough in the sky to be visible in the narrow angle camera view. They took 1 image sequence per day, probably through all polarizing filter positions (no color filters on the later Surveyors) showing Earth over a range of phase angles around 180 deg phase (1 day skipped?) They also took a series of images every ?hour? on one day near the end of the mission showing a decent Earth rotation sequence of a gibbous Earth. A bit of image mapping onto a sphere to make a global map and remapping to the spacecraft view of the Earth could make a decent movie. |
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