Outputs (330)

MOSAIC at the E-ELT: A multi-object spectrograph for astrophysics, IGM and cosmology. (2014)
Presentation / Conference Contribution

The Universe is comprised of hundreds of billions of galaxies, each populated by hundreds of billions of stars. Astrophysics aims to understand the complexity of this almost incommensurable number of stars, stellar clusters and galaxies, including th... Read More about MOSAIC at the E-ELT: A multi-object spectrograph for astrophysics, IGM and cosmology..

Progress towards building pixelated transformation-optics devices (2015)
Presentation / Conference Contribution

We report progress in the design and manufacture of micro-structured surfaces that change the direction of transmitted light rays. Such pixellated generalised refraction is general enough to design pixellated transformation-optics devices.

Design and construction of the fibre system for FMOS (2008)
Presentation / Conference Contribution

A consortium of Japanese, Australian and UK groups has developed a fibre-fed near IR (J & H band) multi-object spectrographic facility (FMOS) for the Subaru telescope. In this second-generation instrument, a novel prime focus 400-fibre multi-object p... Read More about Design and construction of the fibre system for FMOS.

Fibre system of DESI (2014)
Presentation / Conference Contribution

GPU-based data processing for 2D microwave imaging on MAST (2016)
Presentation / Conference Contribution

The Synthetic Aperture Microwave Imaging (SAMI) diagnostic is a Mega Amp Spherical Tokamak (MAST) diagnostic based at Culham Centre for Fusion Energy. The acceleration of the SAMI diagnostic data-processing code by a graphics processing unit is prese... Read More about GPU-based data processing for 2D microwave imaging on MAST.

Tool offset optimisation for the machining of free-form optics with a non-zero gradient at the centre (2015)
Presentation / Conference Contribution

Combining optical trapping in a microfluidic channel with simultaneous micro-Raman spectroscopy and motion detection (2014)
Presentation / Conference Contribution

Since their invention by Ashkin optical tweezers have demonstrated their ability and versatility as a non-invasive tool for micromanipulation. One of the most useful additions to the basic optical tweezers system is micro-Raman spectroscopy, which pe... Read More about Combining optical trapping in a microfluidic channel with simultaneous micro-Raman spectroscopy and motion detection.

Daytime site characterisation of La Palma, and its relation to night-time conditions (2014)
Presentation / Conference Contribution

This paper presents preliminary daytime profiles taken using a Wide-Field Shack-Hartmann Sensor at the Swedish Solar Telescope (SST), La Palma. These are contrasted against Stereo-SCIDAR data from corresponding nights to assess the validity of the as... Read More about Daytime site characterisation of La Palma, and its relation to night-time conditions.

Characterising modal noise in fibre-coupled spectrographs for astronomy (2010)
Presentation / Conference Contribution

Fibre modal noise occurs in high spectral resolution, high signal-to-noise applications. It imposes fundamental limits upon the photometric accuracy of state-of-the-art fibre-spectrograph systems. In order to maximize the performance of current and f... Read More about Characterising modal noise in fibre-coupled spectrographs for astronomy.

Optical design of optical switches for diverse field spectroscopy (2010)
Presentation / Conference Contribution

Diverse field spectroscopy is a new concept in which any part of a field can be optically captured and send to the entrance slit of a spectrograph. It is more general than integral field spectroscopy, multi-object spectroscopy and even multi-integral... Read More about Optical design of optical switches for diverse field spectroscopy.

Modelling complex phenomena in optical fibres (2012)
Presentation / Conference Contribution

We present a new model for predicting the performance of fibre systems in the multimode limit. This is based on ray-­‐tracing but includes a semi-­‐empirical description of Focal Ratio Degradation (FRD). We show how FRD is simulated by the model. Wit... Read More about Modelling complex phenomena in optical fibres.

Science requirements and performances for EAGLE for the E-ELT (2010)
Presentation / Conference Contribution

EAGLE is a Phase A study of a multi-IFU, near-IR spectrometer for the European Extremely Large Telescope (E-ELT). The design employs wide-field adaptive optics to deliver excellent image quality across a large (38.5 arcmin2) field. When combined with... Read More about Science requirements and performances for EAGLE for the E-ELT.

EAGLE Spectroscopy of Resolved Stellar Populations Beyond the Local Group (2009)
Presentation / Conference Contribution

We give an overview of the science case for spectroscopy of resolved stellar populations beyond the Local Group with the European Extremely Large Telescope (E-ELT). In particular, we present science simulations undertaken as part of the EAGLE Phase A... Read More about EAGLE Spectroscopy of Resolved Stellar Populations Beyond the Local Group.

A new method for correcting fibre barycentre displacements in high resolution spectroscopy (2012)
Presentation / Conference Contribution

The physics of galaxy evolution with EAGLE (2010)
Presentation / Conference Contribution

One of the prominent science goal of the ELTs will be to study the physics and mass assembly of galaxies at very high redshifts. Here, we present the galaxy evolution science case for EAGLE, which is a NIR multi-integral field spectrograph for the E-... Read More about The physics of galaxy evolution with EAGLE.

A multi-object multi-field spectrometer and imager for a European ELT (2006)
Presentation / Conference Contribution

Pushing FORS to the Limit—A New Population of Faint Extended Lyα Emitters at z˜3 (2009)
Presentation / Conference Contribution

We present here the results of an ambitious attempt to push searches for spatially extended emission from damped Lyα absorption sustems (DLAS) and Lyman limit systems (LLS) to fainter surface brightness limits with observations performed in service m... Read More about Pushing FORS to the Limit—A New Population of Faint Extended Lyα Emitters at z˜3.

The CNOC2 Field Galaxy Redshift Survey (1998)
Presentation / Conference Contribution

Fundamental to the understanding of the universe is the evolution of structures, from galaxies to clusters of galaxies to large-scale sheets and filaments of galaxies and voids. The CNOC2 (Canadian Network for Observational Cosmology) Field Galaxy Re... Read More about The CNOC2 Field Galaxy Redshift Survey.

Galactic Centre science with an ELT (2010)
Presentation / Conference Contribution

10m-class telescopes such as the VLT and the Keck Telescope have allowed tremendous progress on the understanding of environment of Sgr A*, the supermassive black hole at the Galactic Centre. However, these telescopes and associated instrumentation a... Read More about Galactic Centre science with an ELT.

MIFS: A Mega Integral Field Spectrograph for the VLT (2001)
Presentation / Conference Contribution