2400 new eyes on the sky to see cosmic rainbows
2400 new eyes on the sky to see cosmic rainbows 7gP8b
In addition to cameras, astronomers also use instruments known as spectrographs to study celestial objects. A spectrograph separates the light from an object into its component colors, in other words, creating an accurate rainbow. Learning the strengths of the different colors in the rainbow from an object can tell astronomers various details about the object, such as its motion, temperature, and chemical composition.
Called PFS (Prime Focus Spectrograph), this new instrument separates the visible light rainbow into two components: the red side and the blue side. Thus, it may be more accurate to refer to data sets as half rainbows. Together with a third type of detector that can see infrared light invisible to humans, all three types of detectors produce one and a half rainbows for the object being studied.
Together with the Wide Field Camera (HSC: Hyper Suprime-Cam), PFS will help launch the Subaru Telescope 2. 0 project, which will reveal the nature of dark matter and dark energy, the formation of structure in the universe, and the physical processes of galaxy formation and evolution.
In addition
to cameras, astronomers
also
use
instruments known as spectrographs to study celestial
objects
. A spectrograph separates the light from an
object
into its component colors,
in other words
, creating an accurate rainbow. Learning the strengths of the
different
colors in the rainbow from an
object
can
tell
astronomers various
details
about the
object
, such as its motion, temperature, and chemical composition.
Called PFS (Prime Focus Spectrograph), this new instrument separates the visible light rainbow into two components: the red side and the blue side.
Thus
, it may be more accurate to refer to data sets as half rainbows. Together with a third type of detector that can
see
infrared light invisible to humans, all three types of detectors produce one and a half rainbows for the
object
being studied
.
Together with the Wide Field Camera (HSC: Hyper
Suprime-Cam
), PFS will
help
launch the Subaru Telescope 2. 0 project, which will reveal the nature of dark matter and dark energy, the formation of structure in the universe, and the physical processes of galaxy formation and evolution.
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