Observing the night sky with the naked eye, we found many stars that seemed infinite to us. Through the new telescope that observes the spectrum of the night sky, the stars above us are multiplied by a thousand.
In the image above, each point is not a star. Each point is a galaxy, and there are more than one million points in the image. The map shows data from the Sloan Digital Sky Survey, which covers a large part of the sky.
Photo source: Daniel EISENSTEIN cooperates with SDSS-III
Ghost of night
A complete new telescope system will make it possible to observe the night sky spectrum.The night will be filled with hitherto invisible objects
By studying the spectra of a large number of objects, researchers will be able to conduct a general survey of the universe and find clues about the identity of dark matter, dark energy, and the formation and evolution of galaxies.
Understand the vast space of the universe in one second
Perhaps the greatest achievement of the S-CANDELS research program is the vision of Extended Groth. The strips shown below are more than half a degree in length and larger than the apparent full moon diameter. Each pixel is a galaxy, and there are thousands of bright pixels in this image alone, even though most of the pixels (such as space) are dark. NASA / SPITZER / S-CANDELS; Ashby and Cole. (2015)
The ghost of the night.New eyes on the night sky
SFP can now successfully observe the spectrum of the night sky. The latest two products of the Subaru Telescope (including miniature telescopes) enable an international research team led by members of the Kavli Institute for Cosmophysics and Mathematics (Kavli IPMU) to observe the spectrum of the night sky.the first time
The team has been developing the Prime Focus Spectrograph (PFS), one of the next-generation central observation instruments that will be installed on the Subaru telescope near the top of Mauna Kea, Hawaii.
Your goal is to discover the nature of dark matter and energy by studying the spectra of distant objects in the universe.
The PFS project is expected to start scientific observations in 2023.
Looking for the ghost of night
The Prime Focus Spectrograph (PFS) is an instrument currently under development and will be installed on the 8.2m Subaru telescope atop Maunakea, Hawaii.
This instrument divides light from celestial bodies (such as stars and galaxies) into different wavelengths. The resulting data set is called a “spectrum” and is used to study various details of celestial bodies, such as their motion.
PFS will be able to collect the spectra of approximately 2,400 celestial bodies at a time.
The sub-components and subsystems of PFS have been constructed, assembled and tested in the United States, France, Brazil and Taiwan before being shipped to the Subaru telescope. The goal is to prepare it for scientific use by 2023.
What will the main focus spectrometer study?
Use the main focus of the 8.2 m primary lens Subaru TelescopeResearchers will be able to observe a wide range of night sky at once.
They will be able to take clear images of the vast sky in one exposure and discover many celestial bodies in the distant universe.
Using SFP, researchers will be able to quickly capture the spectrum (up to about 2400 objects in one exposure), measure the motion of stars, see how far away the galaxy is, and obtain various other information, which can only be in the spectrum, not the image in.
By studying the spectra of a large number of objects, researchers will be able to conduct a census of the universe and find clues about the identity of dark matter, dark energy, and the formation and evolution of galaxies.
Who participated in the development of the Prime Focus spectrometer?
-Kavli Institute of Cosmos Physics and Mathematics (Kavli IPMU), University of Tokyo
-Subaru Telescope and National Astronomical Observatory of Japan
-Institute of Astronomy and Astrophysics, Chinese Academy of Sciences (ASIAA)
-California Institute of Technology (Caltech)
-IAG Department of Astronomy, University of Sao Paulo
–Johns Hopkins University
-NASA Jet Propulsion Laboratory (JPL)
-Marseille Astrophysics Laboratory (LAM)
-National Laboratory of Astrophysics (LNA)
-Max Planck Institute of Astrophysics
-Max Planck Institute of Geophysics
– Princeton University
– Universidad Jiao Tong de Shanghai
-University of Science and Technology of China
– Columbia University
-University of Connecticut
-University of Illinois at Urbana-Champaign
-University of Massachusetts Amherst
-University of Pittsburgh