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  • richardmitnick 9:39 am on August 24, 2016 Permalink | Reply
    Tags: 4MOST, , , ,   

    From AAO: “4MOST — 4-metre Multi-Object Spectroscopic Telescope” 

    AAO Australian Astronomical Observatory

    Australian Astronomical Observatory

    The Instrumentation Group at the AAO is developing the AESOP instrument for a major international consortium called 4MOST, for the European Southern Observatory (ESO). The AESOP positioner is based on the AAO’s patented ‘Echidna’ fibre-positioning technology, which has been deployed at Japan’s 8-m Subaru telescope in Hawai’i.

    NAOJ/Subaru Telescope at Mauna Kea Hawaii, USA
    NAOJ/Subaru Telescope at Mauna Kea Hawaii, USA

    Because the AAO is providing a critical technology that cannot be sourced elsewhere, Australia is the only one of the 13 international partners in this consortium that is not an ESO member.

    4MOST will upgrade the 4-m VISTA telescope in Chile with a revolutionary, massively multiplexed spectroscopic capability and is intended to complement three key all­-sky, space­-based ob­servatories: Gaia, EUCLID, and eROSITA.

    In addition to several European-led surveys, Simon Driver of UWA will lead the WAVES survey with 4MOST: a 2 million galaxy survey designed to unlock some of the mysteries of dark matter and galaxy formation.

    https://www.4most.eu/

    1
    The 4MOST consortium has been selected by the European Southern Observatory (ESO) to provide the ESO community with a fibre-fed spectroscopic survey facility on the VISTA telescope with a large enough field-of-view to survey a large frac­tion of the southern sky in a few years.

    ESO/Vista Telescope
    ESO/Vista Telescope

    The facility will be able to simultaneously obtain spectra of ~2400 objects distributed over an hexagonal field-of-view of 4 square degrees. This high multiplex of 4MOST, combined with its high spectral resolution, will enable detection of chemical and kinematic substructure in the stellar halo, bulge and thin and thick discs of the Milky Way, thus help unravel the origin of our home galaxy. The instrument will also have enough wavelength coverage to secure velocities of extra-galactic objects over a large range in red­shift, thus enabling measurements of the evolution of galaxies and the structure of the cosmos.

    This exceptional instrument enables many science goals, but the design is especially intended to complement three key all­-sky, space­-based ob­servatories of prime European interest: Gaia, EUCLID, and eROSITA.

    ESA/Gaia satellite
    ESA/Gaia satellite

    ESA/Euclid spacecraft
    ESA/Euclid spacecraft

    3
    eROSITA

    Such a facility has been identified as of critical importance in a number of recent European strategic documents (Bode et al., 2008; de Zeeuw & Molster, 2007; Drew et al., 2010; Turon et al., 2008) and forms the perfect com­plement to the many all­-sky survey pro­jects around the world.

    4MOST is currently in its Preliminary Design Phase with an expected start of science operations in 2021.

    See the full article here .

    Please help promote STEM in your local schools.

    STEM Icon

    Stem Education Coalition

    AAO Anglo Australian Telescope Exterior
    AAO Anglo Australian Telescope Interior
    Anglo-Australian telescope

    The Australian Astronomical Observatory, a division of the Department of Industry, Innovation and Science, operates the Anglo-Australian and UK Schmidt telescopes on behalf of the astronomical community of Australia. To this end the Observatory is part of and is funded by the Australian Government. Its function is to provide world-class observing facilities for Australian optical astronomers.

     
  • richardmitnick 12:05 am on December 16, 2015 Permalink | Reply
    Tags: 4MOST, , AESOP, , ,   

    From AAO: “AESOP” 

    AAO Australian Astronomical Observatory

    Australian Astronomical Observatory

    1

    AESOP is the fibre positioner unit for the 4MOST instrument planned for the 4-metre European Southern Observatories VISTA telescope in Chile.

    4MOST 4-metre Multi-Object Spectroscopic Telescope
    4MOST 4-metre Multi-Object Spectroscopic Telescope

    ESO Vista Telescope
    ESO/VISTA telescope

    The 4MOST project, led by the Astrophysical Institute Potsdam (Germany), involves a number of European partners. The AAO component, AESOP, deploys 2400 optical fibres to required positions on the curved focal surface of the telescope. Each fibre can be deployed anywhere within a fixed patrol area. Field reconfigurations are achieved in an iterative closed-loop process with positional feedback from a metrology system. Optical fibres are connectorised at their exit from the positioner system, where they feed a fibre bundle terminated a series of optical spectrographs. The proposed design for AESOP is an evolution of the AAO’s tilting spine technology, first designed and implemented in the FMOS-Echidna instrument for the Subaru telescope.

    NAOJ Subaru FMOS
    FMOS on the NAOJ Subaru telescope

    NAOJ Subaru Telescope
    NAOJ Subaru HiCIAO Camera
    NAOJ Subaru telescope

    See the full article here .

    Please help promote STEM in your local schools.

    STEM Icon

    Stem Education Coalition

    AAO Anglo Australian Telescope Exterior
    AAO Anglo Australian Telescope Interior
    Anglo-Australian telescope

    The Australian Astronomical Observatory, a division of the Department of Industry, Innovation and Science, operates the Anglo-Australian and UK Schmidt telescopes on behalf of the astronomical community of Australia. To this end the Observatory is part of and is funded by the Australian Government. Its function is to provide world-class observing facilities for Australian optical astronomers.

     
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