The Milky Way through a photograph of 9 billion pixels
What we see in the picture is the work of the VISTA telescope from the Paranal Observatory in Chile, a photo of 9 billion pixels that includes the center of the Milky Way and will serve astronomers to unravel the complex history of star formation in our galaxy.
A picture really is the combination of several at once, a collage that combines thousands of separate shots to create a unique and spectacular photography. To give us an idea, the picture contains up to 10 times the number of stars than any previous attempt and she can carry out major statistical analyzes of the Milky Way, such as colors, temperature, mass and age of the different stars that form.
And is that our galaxy, like most spiral galaxies, containing a core of old stars, with older, which could help scientists understand even better the evolution followed the Milky Way. According to the scientists who realize this decision:
The image shows not only the core of the Galaxy and its stars, but the gas and dust. These make the central stars darken making them more difficult to observe.
The second image is the result of the use of infrared wavelengths on the photograph. This team was able to avoid the gas and dust building a new data set of central stars of the Milky Way.
A historic photograph of 108,200 x 81,500 pixels occupying the figure of 24.6 GB.