Saturday 20 January, 2018

Forscher erstellen riesiges Himmelslexikon
Veröffentlicht: 30 December 2016 Friday, 04:07  PM

Forscher erstellen riesiges Himmelslexikon

A giant digital reference book for billions of stars, galaxies and other celestial objects has created an international research team. According to the involved Max Planck Institute for Astronomy in Heidelberg, the Celestial Encyclopaedia is the world`s largest digital heavenly screening ever. "We were able to look to the edge of the universe," said director Hans-Walter Rix.

The catalog is based on observations of the telescope system "Pan-Starrs". The large telescope «PS1» with an extremely powerful camera has been through for more than four years since 2010 the afterthimmel. The stars have been blown out by stars such as stars (Supernovae), asteroids, alien galaxies and black holes of up to 12.5 billion light years.

A total of three billion heavenly objects were imported into the database. Among other things, the scientists hope to gain new and important information on the origin of the universe. They can, for example, also view earth-like asteroids and thus better evaluate the possible danger of a strike on Earth.

The huge catalog includes two petabytes of data - "that equates to 40 million filing cabinets, each with four drawers of tightly printed text," they said. The sky had been scanned and scanned 60 times. The researchers then took another three years to gather all the information systematically so that astrophysics and other scientists could quickly access it. You now have access to millions of images, maps of star dust, and precise measurements of the objects.

We also created a 3D map of Milky Way, our home galaxy. In contrast to the starry sky map of the astronomical satellite "Gaia", color filters were used, which made a five-fold deeper look into the galaxy and also illuminated objects that were weaker. Both maps can only capture 10 to 20 percent of the Milky Way stars. The rest remained hidden behind dust, Rix explained.

The "PS1" telescope is one of two large telescopes currently stationed on a top of the Maui island of Hawaii. "Pan-Starrs" stands for "Panoramic Survey Telescope and Rapid Response System".


/ Mrf /