Alex Agudo Berbel

Max Planck Institute for Extraterrestrial Physics

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E. Wiezorrek

Max Planck Institute for Extraterrestrial Physics

N. M. Förster Schreiber

Max Planck Institute for Extraterrestrial Physics

R. Davies

Max Planck Institute for Extraterrestrial Physics

Michael Wegner

Friedrich-Alexander-Universität Erlangen-Nürnberg

R. Genzel

Max Planck Institute for Extraterrestrial Physics

B. Muschielok

Ludwig-Maximilians-Universität München

R. M. Sharples

Durham University

S. Ramsay

Pepsi (United States)

Yixian Cao

Max Planck Institute for Extraterrestrial Physics

Achim Hess

UK Astronomy Technology Centre

Cooperative Institutions

Max Planck Institute for Extraterrestrial Physics

115

Max Planck Society

108

Leibniz Institute for Astrophysics Potsdam

100

European Southern Observatory

Max Planck Institute for Astronomy

Centre National de la Recherche Scientifique

UK Astronomy Technology Centre

Arcetri Astrophysical Observatory

Australian Astronomical Observatory

National Institute for Astrophysics

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Status of the KMOS multi-object near-infrared integral field spectrograph

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2012)

R. M. Sharples R. Bender Alex Agudo Berbel Richard J. Bennett Naidu Bezawada

KMOS is a multi-object near-infrared integral field spectrograph being built by a consortium of UK and German institutes. We report on the final integration and test phases of KMOS, and its performance verification, prior to commissioning on the ESO VLT later this year.

Integral field spectrograph

10.1117/12.926021

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Citations (15)

First on-sky results of ERIS at VLT

Ground-based and Airborne Instrumentation for Astronomy IX (2022)

Kateryna Kravchenko Yigit Dallilar Olivier Absil Alex Agudo Berbel Andrea Baruffolo

ERIS (Enhanced Resolution Imager and Spectrograph) is a new adaptive optics instrument installed at the Cassegrain focus of the VLT-UT4 telescope at the Paranal Observatory in Chile. ERIS consists of two near-infrared instruments: SPIFFIER, an integral field unit (IFU) spectrograph covering J to K bands, and NIX, an imager covering J to M bands. ERIS has an adaptive optics system able to work with both LGS and NGS. The Assembly Integration Verification (AIV) phase of ERIS at the Paranal Observatory was carried out starting in December 2021, followed by several commissioning runs in 2022. This contribution will describe the first preliminary results of the on-sky performance of ERIS during its commissioning and the future perspectives based on the preliminary scientific results.

Cassegrain reflector

First light

Very Large Telescope

Integral field spectrograph

10.1117/12.2629258

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Citations (2)

The Enhanced Resolution Imager and Spectrograph for the VLT

Astronomy and Astrophysics (2023)

R. Davies Olivier Absil Guido Agapito Alex Agudo Berbel Andrea Baruffolo

ERIS, the Enhanced Resolution Imager and Spectrograph, is an instrument that both extends and enhances the fundamental diffraction limited imaging and spectroscopy capability for the VLT. It replaces two instruments that were being maintained beyond their operational lifetimes, combines their functionality on a single focus, provides a new wavefront sensing module for natural and laser guide stars that makes use of the Adaptive Optics Facility, and considerably improves on their performance. The observational modes ERIS provides are integral field spectroscopy at 1-2.5 {\mu}m, imaging at 1-5 {\mu}m with several options for high contrast imaging, and longslit spectroscopy at 3-4 {\mu}m, The instrument is installed at the Cassegrain focus of UT4 at the VLT and, following its commissioning during 2022, has been made available to the community.

Integral field spectrograph

Cassegrain reflector

Imaging Spectroscopy

Spectral resolution

Asteroseismology

10.1051/0004-6361/202346559

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Citations (16)

First Light for the KMOS Multi-Object Integral-Field Spectrometer

The Messenger (2013)

R. M. Sharples R. Bender Alex Agudo Berbel Naidu Bezawada R. Castillo

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Citations (83)

Recent progress on the KMOS multi-object integral-field spectrograph for ESO VLT

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2010)

R. M. Sharples R. Bender Alex Agudo Berbel Richard J. Bennett Naidu Bezawada

KMOS is a near-infrared multi-object integral-field spectrometer which is one of a suite of second-generation instruments under construction for the VLT. The instrument is being built by a consortium of UK and German institutes working in partnership with ESO and is now in the manufacture, integration and test phase. In this paper we present an overview of recent progress with the design and build of KMOS and present the first results from the subsystem test and integration.

Integral field spectrograph

10.1117/12.856125

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Citations (1)

4MOST: Project overview and information for the First Call for Proposals

arXiv (Cornell University) (2019)

R. S. de Jong Oscar Agertz Alex Agudo Berbel James Aird D. M. Alexander

We introduce the 4-metre Multi-Object Spectroscopic Telescope (4MOST), a new high-multiplex, wide-field spectroscopic survey facility under development for the four-metre-class Visible and Infrared Survey Telescope for Astronomy (VISTA) at Paranal. Its key specifications are: a large field of view (FoV) of 4.2 square degrees and a high multiplex capability, with 1624 fibres feeding two low-resolution spectrographs ($R = λ/Δλ\sim 6500$), and 812 fibres transferring light to the high-resolution spectrograph ($R \sim 20\,000$). After a description of the instrument and its expected performance, a short overview is given of its operational scheme and planned 4MOST Consortium science; these aspects are covered in more detail in other articles in this edition of The Messenger. Finally, the processes, schedules, and policies concerning the selection of ESO Community Surveys are presented, commencing with a singular opportunity to submit Letters of Intent for Public Surveys during the first five years of 4MOST operations.

Field of view

10.48550/arxiv.1903.02464

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Citations (104)

The Software Package for Astronomical Reductions with KMOS: SPARK

Astronomy and Astrophysics (2013)

R. Davies Alex Agudo Berbel E. Wiezorrek Michele Cirasuolo N. M. Förster Schreiber

KMOS is a multi-object near-infrared integral field spectrometer with 24 deployable cryogenic pick-off arms. Inevitably, data processing is a complex task that requires careful calibration and quality control. In this paper we describe all the steps involved in producing science-quality data products from the raw observations. In particular, we focus on the following issues: (i) the calibration scheme which produces maps of the spatial and spectral locations of all illuminated pixels on the detectors; (ii) our concept of minimising the number of interpolations, to the limiting case of a single reconstruction that simultaneously uses raw data from multiple exposures; (iii) a comparison of the various interpolation methods implemented, and an assessment of the performance of true 3D interpolation schemes; (iv) the way in which instrumental flexure is measured and compensated. We finish by presenting some examples of data processed using the pipeline.

Interpolation

SPARK (programming language)

Limiting

Data Processing

10.1051/0004-6361/201322282

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Citations (87)

ERIS: revitalising an adaptive optics instrument for the VLT

Ground-based and Airborne Instrumentation for Astronomy VII (2018)

Richard Davies Simone Esposito H. M. Schmid Guido Agapito Alex Agudo Berbel

ERIS is an instrument that will both extend and enhance the fundamental diffraction limited imaging and spectroscopy capability for the VLT. It will replace two instruments that are now being maintained beyond their operational lifetimes, combine their functionality on a single focus, provide a new wavefront sensing module that makes use of the facility Adaptive Optics System, and considerably improve their performance. The instrument will be competitive with respect to JWST in several regimes, and has outstanding potential for studies of the Galactic Center, exoplanets, and high redshift galaxies. ERIS had its final design review in 2017, and is expected to be on sky in 2020. This contribution describes the instrument concept, outlines its expected performance, and highlights where it will most excel.

First light

Optical instrument

10.1117/12.2311480

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Citations (25)

Recent progress on the KMOS multi-object integral field spectrometer

The Messenger (2010)

R. M. Sharples R. Bender Alex Agudo Berbel Richard J. Bennett Naidu Bezawada

Source

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Citations (1)

KMOS data flow: reconstructing data cubes in one step

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2010)

Richard Davies Alex Agudo Berbel E. Wiezorrek Thomas Ott N. M. Förster Schreiber

KMOS is a multi-object near-infrared integral field spectrometer with 24 deployable pick-off arms. Data processing is inevitably complex. We discuss specific issues and requirements that must be addressed in the data reduction pipeline, the calibration, the raw and processed data formats, and the simulated data. We discuss the pipeline architecture. We focus on its modular style and show how these modules can be used to build a classical pipeline, as well as a more advanced pipeline that can account for both spectral and spatial flexure as well as variations in the OH background. A novel aspect of the pipeline is that the raw data can be reconstructed into a cube in a single step. We discuss the advantages of this and outline the way in which we have implemented it. We finish by describing how the QFitsView tool can now be used to visualise KMOS data.

Data cube

Data Processing

10.1117/12.856380

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Citations (3)