The 4MOST instrument concept overview
Haynes, Roger; Barden, Sam; de Jong, Roelof; Schnurr, Olivier, et al. (2014). The 4MOST instrument concept overview Ground-based and Airborne Instrumentation for Astronomy V, 9147,, 91476 - 91476. 5th Conference on Ground-Based and Airborne Instrumentation for Astronomy. Montreal, Canada: SPIE
Conference Proceeding/Paper
|
Published
|
English
Authors:
Haynes, Roger
;
Barden, Sam
;
de Jong, Roelof
;
Schnurr, Olivier
, et al.
Department:
Lund Observatory - Has been reorganised
Project:
4MOST - massive spectroscopic surveys of the Milky Way and the Universe
The New Milky Way
Abstract:
The 4MOST([1]) instrument is a concept for a wide-field, fibre-fed high multiplex spectroscopic instrument facility on the ESO VISTA telescope designed to perform a massive (initially >25x10(6) spectra in 5 years) combined all-sky public survey. The main science drivers are: Gaia follow up of chemo-dynamical structure of the Milky Way, stellar radial velocities, parameters and abundances, chemical tagging; eROSITA follow up of cosmology with x-ray clusters of galaxies, X-ray AGN/galaxy evolution to z similar to 5, Galactic X-ray sources and resolving the Galactic edge; Euclid/LSST/SKA and other survey follow up of Dark Energy, Galaxy evolution and transients. The surveys will be undertaken simultaneously requiring: highly advanced targeting and scheduling software, also comprehensive data reduction and analysis tools to produce high-level data products. The instrument will allow simultaneous observations of similar to 1600 targets at R similar to 5,000 from 390-900nm and similar to 800 targets at R>18,000 in three channels between similar to 395-675nm (channel bandwidth: 45nm blue, 57nm green and 69nm red) over a hexagonal field of view of similar to 4.1 degrees2. The initial 5-year 4MOST survey is currently expect to start in 2020. We provide and overview of the 4MOST systems: opto-mechanical, control, data management and operations concepts; and initial performance estimates.
Keywords:
4MOST ;
VISTA ;
spectroscopic facility ;
wide field MOS ;
multi-object ;
optical fibre ;
system design
Cite this