Primary Focus Spectrograph (PFS)
The Primary Focus Spectrograph (PFS) is a multi-scope instrument that is also aiming to measure the effect of dark energy on the expansion of the universe. It will obtain optical and near-infrared spectra for millions of galaxies and quasars.
PFS will be installed on the Subaru 8-meter telescope at Mauna Kea Observatory in 2018. PFS is an international project led by the Kavli Institute for the Physics and Mathematics of the Universe (IPMU) at the University of Tokyo.
The PFS fiber system constitutes of 2’400 fiber-positioning actuators following a hexagonal distribution on the focal plane with an 8-mm distance between actuators (center-to-center).
The 4-metre Multi-Object Spectroscopic Telescope (4MOST)
The 4-metre Multi-Object Spectroscopic Telescope (4MOST) is a multi-scope instrument that is aiming to probe galactic archaelogy, explore X-ray sources in the Universe, probe galaxy evolution and cosmology. It will obtain visible spectra for millions of stars and galaxies.
4MOST will be installed on the VISTA 4-meter telescope at Paranal Observatory in 2020. 4MOST is a european project led by the Leibniz-Institute for Astrophysics in Postdam.
The 4MOST fiber system will consistutes of up to 3000 fiber-positioning actuators following an hexagonal distribution on the focal plane.
Maunakea Spectroscopic Explorer (MSE)
The Maunakea Spectroscopic Explorer (MSE; previously, the Next Generation CFHT) will fill a missing link in the international suite of optical-infra-red facilities in the 2020s, and will provide a key capability for multi-wavelength science, namely: fully dedicated, 10m-class, wide-field spectroscopy of thousands of objects per hour at spectral resolutions ranging from R = 2000 to ≥ 20000. This facility will be provided by upgrading the existing CFHT and expanding the partnership. A Project Office has been established to lead the continued scientific, technical and partnership development and com- plete a Construction Proposal for the facility. Here, we review the current status of the science development, in particular discussing the mechanisms by which the principal science drivers flow into the technical design, and we discuss how the facility will be optimized to satisfy demanding scientific specifications.