Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Default user image.

Sofia Feltzing

Professor

Default user image.

From space to specs : Requirements for 4MOST

Författare

  • Olivier Schnurr
  • C. Jakob Walcher
  • Cristina Chiappini
  • Axel D. Schwope
  • Olga Bellido-Tirado
  • Roger Haynes
  • Sofia Feltzing
  • Richard McMahon
  • Roelof S. de Jong
  • Wolfgang Ansorge

Summary, in English

4MOST,1 the 4m Multi-Object spectrographic Survey Telescope, is an upcoming optical, fiber-fed, MOS facility for the VISTA telescope at ESO's Cero Paranal Observatory (Chile). The preliminary design of 4MOST features 2,400 fibers split into a low-resolution (1,600 fibers, 390-900 nm, R > 5; 000) and a high-resolution channel (800 fibers, three arms, ∼20-25 nm coverage each, R > 18; 000) with an Echidna-style positioner, and covering a hexagonal field of view of ∼4.1 sqdeg. 4MOST's main science goals encompass massive (tens of millions of spectra), all-Southern sky (> 18; 000 sqdeg) surveys following up both the Gaia (optical) and eROSITA (X-ray) space missions, plus cosmological science that complements missions such as e.g. Euclid. In a novel approach, observations of these science cases, which are very different from another, are to be carried out in parallel (i.e., simultaneously); thus, from the very different science requirements, key user requirements have to be identified, stringently formulated, and condensed into a coherent set of system specifications. Clearly, identifying common grounds and thereby significantly reducing complexity in both the formulated requirements and the final 4MOST facility, is a very challenging task. In this paper, we will present science and user requirements, and how the latter flow down from the former, and eventually further down to the system-specification level. Special emphasis will be put on the identification of key requirements and their validation and verification protocols, so that significant trade-offs can be done as early on in the design phase as possible, with as little impact as possible on the science capabilities upstream.

Avdelning/ar

  • Astronomi - Har omorganiserats

Publiceringsår

2014

Språk

Engelska

Publikation/Tidskrift/Serie

Proceedings of SPIE - The International Society for Optical Engineering

Volym

9150

Dokumenttyp

Konferensbidrag

Förlag

SPIE

Ämne

  • Astronomy, Astrophysics and Cosmology

Nyckelord

  • 4MOST
  • ESO
  • Requirements engineering
  • Requirements management
  • VISTA

Conference name

Modeling, Systems Engineering, and Project Management for Astronomy VI

Conference date

2014-06-22 - 2014-06-24

Conference place

Montreal, QC, Canada

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 0277-786X
  • ISSN: 1996-756X
  • ISBN: 9780819496188