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EPIC maintains a constant view of the fully illuminated Earth as it rotates, providing scientific observations of ozone, vegetation, cloud height and aerosols in the atmosphere. Once EPIC begins regular observations next month, the camera will provide a series of Earth images allowing study of daily variations over the entire globe. About twice a year the camera will capture the moon and Earth together as the orbit of DSCOVR crosses the orbital plane of the moon.
These images were taken between 3:50 p.m. and 8:45 p.m. EDT on July 16, showing the moon moving over the Pacific Ocean near North America. The North Pole is in the upper left corner of the image, reflecting the orbital tilt of Earth from the vantage point of the spacecraft.
moon's far side overlapping the Earth
This image shows the far side of the moon, illuminated by the sun, as it crosses between the DSCOVR spacecraft's Earth Polychromatic Imaging Camera (EPIC) camera and telescope, and the Earth - one million miles away.
Credits: NASA/NOAA
The far side of the moon was not seen until 1959 when the Soviet Luna 3 spacecraft returned the first images. Since then, several NASA missions have imaged the lunar far side in great detail. The same side of the moon always faces an earthbound observer because the moon is tidally locked to Earth. That means its orbital period is the same as its rotation around its axis.
"Combining three images taken about 30 seconds apart as the moon moves produces a slight but noticeable camera artifact on the right side of the moon. Because the moon has moved in relation to the Earth between the time the first (red) and last (green) exposures were made, a thin green offset appears on the right side of the moon when the three exposures are combined. This natural lunar movement also produces a slight red and blue offset on the left side of the moon in these unaltered images."
originally posted by: highfromphoenix
originally posted by: intrptr
I saw me go by.
Pretty neat.
LOL. I was waving.
originally posted by: SlapMonkey
a reply to: Bloodydagger
it looks like a poorly accomplished cut-and-paste project.
originally posted by: highfromphoenix
originally posted by: DogMeat
Pink Floyd comes to mind...
Kewl stuff !
Ohhh.... isn't that "Dark Side of the Moon"?
Either way it's cool.
originally posted by: occrest
I thought the earth was an oblate, pear-shaped spheroid.
Somebody is lying!!
Combining three images taken about 30 seconds apart
between the time the first (red) and last (green) exposures were made
in these unaltered images.