long exposure

long exposure

Hubble Space Telescope: Zoom in on CLASS B1608+656 [HD]

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This video begins with a view of the night sky before zooming in towards galaxy cluster CLASS B1608+656. It homes in first on a view of the area around the cluster from the Digitized Sky Survey (produced with a ground-based telescope), before focusing on Hubble observations of the cluster. Hubble's very long exposure (14 hours) combined with advanced instrumentation and a unique location above the distorting atmosphere means that its observations are both much sharper and much brighter than those taken from the ground-based telescope. Hubble's image is clearly visible as a square of brighter galaxies near the end of the zoom video. About the Object Name: CLASS B1608+656 Data: http://simbad.u-strasbg.fr/simbad/sim-id?Ident=CLASS+B1608%2B656 Type: • Early Universe : Galaxy : Grouping : Cluster • Early Universe : Galaxy • Early Universe : Galaxy : Activity : AGN : Quasar Facility: Hubble Space Telescope Release date: 17 April 2014 Related release "A cross-section of the Universe": http://www.spacetelescope.org/news/heic1408/ An image of a galaxy cluster taken by the NASA/ESA Hubble Space Telescope gives a remarkable cross-section of the Universe, showing objects at different distances and stages in cosmic history. They range from cosmic near neighbours to objects seen in the early years of the Universe. The 14-hour exposure shows objects around a billion times fainter than can be seen with the naked eye. Credit: NASA, ESA, Digitised Sky Survey 2, N. Risinger (skysurvey.org)