Publications de Philipp Hörler

The Robotic Multiobject Focal Plane System of the Dark Energy Spectroscopic Instrument (DESI)

Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib

A system of 5020 robotic fiber positioners was installed in 2019 on the Mayall Telescope, at Kitt Peak National Observatory. The robots automatically retarget their optical fibers every 10-20 minutes, each to a precision of several microns, with a reconfig ...

IOP Publishing Ltd2023

Optical test procedure for characterization and calibration of robotic fiber positioners for multiobject spectrographs

Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib, Loïc Grossen, Ricardo Jorge Araùjo Pereira

The recent burgeoning interest in massive multiobject spectroscopy has pushed the development of massive optical fiber positioning systems. These systems rely on precise fiber placement to detect the light spectra of many stars and galaxies. One successful ...

2020

Robotic Fiber Positioning Systems for Massive Spectroscopic Surveys: Mechanical Design Guidelines and Technological Opportunities

Philipp Hörler

The technology of fiber positioning robots has been evolving in the recent years and currently lacks of a comprehensive view. This thesis aims at filling this gap. Fiber positioning robots are analyzed under different aspects: a theoretical framework, desi ...

EPFL2018

High density fiber postitioner system for massive spectroscopic surveys

Hannes Bleuler, Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib

We describe here a novel design of a fast high-density robotized fiber positioner system for massive spectroscopic surveys. The fiber positioners are compact, robust, and they can be coordinated, allowing for a high spatial density. Furthermore, the high a ...

OXFORD UNIV PRESS2018

Design and performances of an optical metrology system to test position and tilt accuracy of fiber positioners

Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib

This paper describes the design of an optical metrology system for fiber positioners. The system can be used for accurate calibration and verification of fiber positioners with SCARA-like RR planar kinematics. It is capable of measuring accurately the abso ...

SPIE-INT SOC OPTICAL ENGINEERING2018

A 24 mm diameter fibre positioner for spectroscopic surveys

Hannes Bleuler, Mohamed Bouri, Luzius Gregor Kronig, Philipp Hörler, Jean-Paul Richard Kneib

One of the big research topics in modern cosmology is the mystery of dark Energy. To unveil the secret, cosmologists want to measure precisely the evolution of large scale structures in the universe. One way of doing so is to measure the 3D location of a h ...

Spie-Int Soc Optical Engineering2016

The DESI fiber positioner system

Philipp Hörler, Jean-Paul Richard Kneib

The Dark Energy Spectroscopic Instrument (DESI) is under construction to measure the expansion history of the Universe using the baryon acoustic oscillation technique. A new prime focus corrector for the KPNO Mayall telescope will deliver light to 5,000 fi ...

Spie-Int Soc Optical Engineering2016