4MOST : the 4-metre multi-object spectroscopic telescope project in the assembly, integration, and test phase

4MOST is a new high-multiplex, wide-field spectroscopic survey facility under construction for ESO's 4m-VISTA telescope at Paranal, Chile. Its key specifications are: a large field of view of 4.4 square degrees, a high multiplex fibre positioner based on the tilting spine principle that positions 2436 science fibres in the focal surface of which 1624 fibres go to two low-resolution optical spectrographs (R = λ/Δλ ~ 6500) and 812 fibres transfer light to the high-resolution optical spectrograph (R ~ 20,000). Currently, almost all subsystems are completed and full testing in Europe will be finished in spring 2023, after which 4MOST will be shipped to Chile. An overview is given of instrument construction and capabilities, the planned science of the consortium and the recently selected community programmes, and the unique operational scheme of 4MOST

A Provenance Data Model for Astronomy

http://www.aspbooks.org/publications/521/450.pdfInternational audienceIn Astronomy as well as in other sciences it is of crucial importance to have information about the origin and history of data, i.e. its provenance information. The IVOA Provenance Data Model shall record this information in a consistent and interoperable way for astronomical data. This will enable scientists to use common tools for discovering data based on their provenance and help them to gain a better understanding of the data, its processing and to judge the data's quality and reliability

A Provenance Data Model for Astronomy

http://www.aspbooks.org/publications/521/450.pdfInternational audienceIn Astronomy as well as in other sciences it is of crucial importance to have information about the origin and history of data, i.e. its provenance information. The IVOA Provenance Data Model shall record this information in a consistent and interoperable way for astronomical data. This will enable scientists to use common tools for discovering data based on their provenance and help them to gain a better understanding of the data, its processing and to judge the data's quality and reliability

A Provenance Data Model for Astronomy

http://www.aspbooks.org/publications/521/450.pdfInternational audienceIn Astronomy as well as in other sciences it is of crucial importance to have information about the origin and history of data, i.e. its provenance information. The IVOA Provenance Data Model shall record this information in a consistent and interoperable way for astronomical data. This will enable scientists to use common tools for discovering data based on their provenance and help them to gain a better understanding of the data, its processing and to judge the data's quality and reliability

CUBES phase a design overview

We present the baseline conceptual design of the Cassegrain U-Band Efficient Spectrograph (CUBES) for the Very Large Telescope. CUBES will provide unprecedented sensitivity for spectroscopy on a 8 – 10 m class telescope in the ground ultraviolet (UV), spanning a bandwidth of ≥ 100 nm that starts at 300 nm, the shortest wavelength accessible from the ground. The design has been optimized for end-to-end efficiency and provides a spectral resolving power of R≥ 20000, that will unlock a broad range of new topics across solar system, Galactic and extraglactic astronomy. The design also features a second, lower-resolution (R ∼ 7000) mode and has the option of a fiberlink to the UVES instrument for simultaneous observations at longer wavelengths. Here we present the optical, mechanical and software design of the various subsystems of the instrument after the Phase A study of the project. We discuss the expected performances for the layout choices and highlight some of the performance trade-offs considered to best meet the instrument top-level requirements. We also introduce the model-based system engineering approach used to organize and manage the project activities and interfaces, in the context that it is increasingly necessary to integrate such tools in the development of complex astronomical projects