A5027526013- Adaptive optics and wavefront sensing
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Optical Systems and Laser Technology
- Advanced optical system design
- Astronomical Observations and Instrumentation
- Optical Wireless Communication Technologies
- Spectroscopy and Laser Applications
- Astro and Planetary Science
- Semiconductor Lasers and Optical Devices
- Advanced Measurement and Metrology Techniques
- Gamma-ray bursts and supernovae
- Particle Accelerators and Free-Electron Lasers
- Calibration and Measurement Techniques
- Satellite Image Processing and Photogrammetry
- CCD and CMOS Imaging Sensors
- Advanced Surface Polishing Techniques
- Atmospheric Ozone and Climate
- Radio Astronomy Observations and Technology
- Scientific Measurement and Uncertainty Evaluation
- Geomagnetism and Paleomagnetism Studies
- Optical Coatings and Gratings
- Planetary Science and Exploration
- Surface Roughness and Optical Measurements
- Optical Network Technologies
Durham University
2010-2022
Centre National de la Recherche Scientifique
2018
Délégation Paris 7
2018
Observatoire de Paris
2018
Sorbonne Université
2018
Laboratoire d’études spatiales et d’instrumentation en astrophysique
2018
Université Paris Cité
2018
Galaxies, Etoiles, Physique et Instrumentation
2018
HiPERCAM is a portable, quintuple-beam optical imager that saw first light on the 10.4-m Gran Telescopio Canarias (GTC) in 2018. The instrument uses re-imaging optics and 4 dichroic beamsplitters to record $u_s g_s r_s i_s z_s$ ($320-1060$ nm) images simultaneously its five CCD cameras, each of 3.1 arcmin (diagonal) field view. detectors are frame-transfer devices cooled thermo-electrically 183 K, thereby allowing both long-exposure, deep imaging faint targets, as well high-speed (over 1000...
HiPERCAM is a quintuple-beam imager that saw first light on the 4.2 m William Herschel Telescope (WHT) in October 2017 and 10.4 Gran Telescopio Canarias (GTC) February 2018. The instrument uses re- imaging optics 4 dichroic beamsplitters to record ugriz (300–1000 nm) images simultaneously its five CCD cameras. detectors are frame-transfer devices cooled thermo-electrically 90°C, thereby allowing both long-exposure, deep of faint targets, as well high-speed (over 1000 windowed frames per...
The Gemini Near IR Spectrograph (GNIRS) currently under development at NOAO and scheduled for delivery in the summer of 2002, will include a powerful innovative Integral Field Spectroscopy (IFS) capability. design, integration test GNIRS Unit (IFU) are responsibility University Durham's Astronomical Instrumentation Group. Critical Design Review is during second quarter year 2000. Its design based on Advanced Image Slicer concept developed as result research conducted auspices Durham R D...
We describe the implementation of a robotic SLODAR instrument at Cerro Paranal observatory. The measures vertical profile optical atmospheric turbulence strength, in 8 resolution elements, to maximum altitude ranging between 100 m and 500 m. present statistical results measurements on total 875 nights 2014 2018. ground layer is very varied, but median case most strength concentrated within first 50 altitude, with relatively weak higher altitudes up find good agreement seeing angle from DIMM...
KMOS is a multi-object near-infrared integral field spectrograph being built by consortium of UK and German institutes. We report on the final integration test phases KMOS, its performance verification, prior to commissioning ESO VLT later this year.
We describe the integral field spectroscopy (IFS) capability of Gemini Near-infrared Spectrograph (GNIRS) installed on Gemini-South telescope. This makes use Advanced Image Slicer (AIS) optical concept Content. slicing is, in principle, most efficient technique IFS. Our design is more compact and adaptable than previous designs this type so that spectrograph can be switched to IFS mode simply by insertion unit (IFU) into focal plane. The near-optimal performance system it a good choice for...
KMOS is a near-infrared multi-object integral field spectrometer which has been selected as one of suite second-generation instruments to be constructed for the ESO VLT in Chile. The instrument will built by consortium UK and German institutes working partnership with currently at end its preliminary design phase. We present status discuss most novel technical aspects compliance specification.
KMOS is a multi-object near-infrared integral field spectrograph built by consortium of UK and German institutes for the ESO Paranal Observatory. We report on on-sky performance verification measured during three commissioning runs VLT in 2012/13 some early science results.
Vertical profiles of the atmospheric optical turbulence strength and velocity is critical importance for simulating, designing, operating next generation instruments European Extremely Large Telescope. Many these are already well into design phase meaning profies required immediately to ensure they optimised unique conditions likely be observed. Stereo-SCIDAR a generalised SCIDAR instrument which used characterise profile wind using triangulation between two binary stars. has demonstrated...
Following a successful Phase A study, we introduce the delivered conceptual design of MOSAIC1 multi-object spectrograph for ESO Extremely Large Telescope (ELT). MOSAIC will provide R~5000 spectroscopy over full 460-1800 nm range, with three additional high-resolution bands (R~15000) targeting features particular interest. combine operational modes, enabling integrated-light observations up to 200 sources on sky (high-multiplex mode) or 10 spatially-extended fields via deployable...
MOSAIC is a mixed-mode multiple object spectrograph planned for the ELT that uses tiled focal plane to support variety of observing modes. The AO system 4 LGS WFS and up NGS positioned anywhere within full 10 arcminute field view control either M4/5 alone GLAO operation feeding 200 targets in plane, or conjunction with open-loop DMs MOAO correction. In this paper we present overall design performance systems.
Implementation of the optical designs image slicing Integral Field Systems requires accurate alignment a large number small (and therefore difficult to manipulate) components. In order facilitate integration these complex systems, Astronomical Instrumentation Group (AIG) University Durham, in collaboration with Labor für Mikrozerspanung (Laboratory for Precision Machining - LFM) Bremen, have developed technique fabricating monolithic multi-faceted mirror arrays using freeform diamond...
The Astronomical Instrumentation Group (AIG) of the University Durham has recently completed an integral field unit (IFU) for use on Gemini-South telescope with Gemini Near-Infrared Spectrograph (GNIRS) built by National Optical Astronomy Observatories (NOAO, USA). When IFU is deployed remotely inside instrument cryostat, GNIRS converted into spectrograph a 5 × 3 arcsec<sup>2</sup> and spatial sampling 0.15 arcsec<sup>2</sup>, optimised 1-2.5μm but operable up to 5μm. We present...
The Centre for Advanced Instrumentation (CfAI) of Durham University (UK) has recently successfully completed the development 24 Integral Field Units (IFUs) K-band Multi-Object Spectrometer (KMOS). KMOS is a second generation instrument ESO's Very Large Telescope (VLT) which due delivery during summer 2012. IFU based on Image Slicer Concept developed by CfAI and previously implemented Gemini Near-InfraRed Spectrograph JWST NIRSpec. Each contains 14 channels have to be accurately aligned. In...
We describe a new concept for an integral field unit that allows the collection of very large number spectra. also complementary low cost spectrograph. Both are necessary design spectrographs with huge numbers spatial elements. These concepts were developed Million Element Integral Field Unit and Spectrograph (MEIFUS) we proposing 8-m larger version Extremely Large Telescope (ELT, 30-m telescope). The this spectrograph would give 2.2 million spectra, each 200 pixels long, covering view 5.2'...
Durham University's Centre for Advanced Instrumentation (CfAI) are currently prototyping key components the KMOS and JWST NIRSpec Integral Field Units (IFUs). These next-generation IFUs will make extensive use of complex monolithic multi-faceted metal mirror arrays, which fabricated by means freeform diamond machining. Using this technique, inherent accuracy machining equipment is exploited to achieve required relative alignment facets, as well obtain necessary optical surface quality each...
The KBand Multi-Object Spectrograph (KMOS) is an astronomical spectrograph designed for integration with the VLT (Very Large Telescope) and capable of surveying 24 independent fields. IFU (Integral Field Unit) subsystem a complex instrument no less than 1080 optical surfaces. We focus here on design manufacturing test process this subsystem. Design system based experience gained similar systems, such as NIRSPEC (Near Infra Red Spectrometer) that will be integrated into James Webb Space...
HiPERCAM is a quintuple-beam imager that saw first light on the 4.2m William Herschel Telescope (WHT) in October 2017 and 10.4m Gran Telescopio Canarias (GTC) February 2018. The instrument uses re-imaging optics 4 dichroic beamsplitters to record ugriz (300-1000nm) images simultaneously its five CCD cameras. detectors are frame-transfer devices cooled thermo-electrically -90degC, thereby allowing both long-exposure, deep imaging of faint targets, as well high-speed (over 1000 windowed frames...
HARMONI is a visible and near-infrared integral field spectrograph equipped with two complementary adaptive optics systems, fully integrated within the instrument. A Single Conjugate AO (SCAO) system offers high performance for limited sky coverage Laser Tomographic (LTAO) provides correction very sky-coverage. While deformable mirror performing real-time of atmospheric disturbances located telescope itself, instrument contains suite state-of-the-art innovative wavefront sensor systems....