The Pan-STARRS project, along with astronomers from Heidelberg's Max Planck Institutes for Astronomy and Garching's Extraterrestrial Physics, published the largest survey of the world that portrays the sky digitally.
Digitization is based on 4 years of observation in 3 / 4 of the night sky and provides extensive information on over 3 billion stars, galaxies and other sources.
The database includes millions of images with accurate counts of billions of stars and galaxies.
In May 2010, the first Panoramic Survey Telescope & Rapid Response System, or Pan-STARRS observatory, a 1,8-meter telescope at the top of Haleakala, Maui, began creating a digital map of the sky.
This was the first study in which scientists aimed to be able to observe the night in the visible and ultraviolet spectrum very quickly and again, looking for moving objects and temporary or variable objects, including asteroids that could possibly be threaten the Earth.
The images are extremely detailed as the PS1 digital camera has the highest resolution from any terrestrial telescope (1.4 Gigapixel).
This means that each image consists of 1.4 billion pixels.
The database has an 2 petabyte volume. If you do not understand the number is 2.000 terabyte.
http://pswww.ifa.hawaii.edu/pswww/
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