L. Venema

Cryogenic optical performance verification methods for optical components, coatings and optical systems

R. Navarro, Eddy Elswijk, M. J. A. te Voert, L. Venema

NOVA-ASTRON has delivered a suite of cryogenic astronomical instruments for large ground based telescopes as well as space missions. The instruments include polarimeters, spectrometers, cameras and interferometers, mostly operating at infrared. Several methods have been developed to verify or measure, under cryogenic …

nl (code pays fourni par la source)

Precision mechanisms for optics in a vacuum cryogenic environment

Eddy Elswijk, G. Kroes, M. Schuil, Maurice Teuwen et autres

To achieve superb stability in cryogenic optical systems, NOVA-ASTRON generally designs optical instruments on the basis of a 'no adjustments' philosophy. This means that in principle no corrections are possible after assembly. The alignment precision and consequently the performance of the instrument …

nl (code pays fourni par la source)

Variations on a theme: novel immersed grating based spectrometer designs for space

Tibor Agócs, R. Navarro, L. Venema

We present novel immersed grating (IG) based spectrometer designs that can be used in space instrumentation. They are based on the design approach that aims to optimize the optical design using the expanded parameter space that the IG technology offers. In principle …

nl (code pays fourni par la source)

Cryogenic optical performance verification methods for optical components, coatings and optical systems

M. J. A. te Voert, R. Navarro, Eddy Elswijk, L. Venema

NOVA-ASTRON has delivered a suite of cryogenic astronomical instruments for large ground based telescopes as well as space missions. The instruments include polarimeters, spectrometers, cameras and interferometers, mostly operating at infrared. Several methods have been developed to verify or measure, under cryogenic …

nl (code pays fourni par la source)

Variations on a theme: novel immersed grating based spectrometer designs for space

Tibor Agócs, R. Navarro, L. Venema

We present novel immersed grating (IG) based spectrometer designs that can be used in space instrumentation. They are based on the design approach that aims to optimize the optical design using the expanded parameter space that the IG technology offers. In principle …

nl (code pays fourni par la source)

Contributions of the Cherenkov Telescope Array (CTA) to the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016)

A. Abchiche, A. U. Abeysekara, Ó. Abril, F. Acero et autres

List of contributions from the Cherenkov Telescope Array (CTA) Consortium presented at the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016), July 11-15, 2016, in Heidelberg, Germany.

Contributions of the Cherenkov Telescope Array (CTA) to the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016)

the CTA Consortium, A. Abchiche, A. U. Abeysekara, Ó. Abril et autres

List of contributions from the Cherenkov Telescope Array (CTA) Consortium presented at the 6th International Symposium on High-Energy Gamma-Ray Astronomy (Gamma 2016), July 11-15, 2016, in Heidelberg, Germany.

CTA Contributions to the 34th International Cosmic Ray Conference (ICRC2015)

the CTA Consortium, A. Abchiche, A. U. Abeysekara, Ó. Abril et autres

List of contributions from the CTA Consortium presented at the 34th International Cosmic Ray Conference, 30 July - 6 August 2015, The Hague, The Netherlands.

Manufacturing, integration, and test results of the MATISSE cold optics bench

Felix C. M. Bettonvil, G. Kroes, Tibor Agócs, Albert van Duin et autres

MATISSE is the second-generation mid-infrared interferometric spectrograph and imager for ESO’s Very Large Telescope Interferometer (VLTI). NOVA-ASTRON is responsible for the Cold Optics Bench (COB), representing the last part of the optics train where the four beams are re-arranged, spectrally dispersed and …

nl, hu (code pays fourni par la source)

MOONS: the Multi-Object Optical and Near-infrared Spectrograph for the VLT

M. Cirasuolo, J. Afonso, C. M. Carollo, Hector Flores et autres

MOONS is a new Multi-Object Optical and Near-infrared Spectrograph selected by ESO as a third generation instrument for the Very Large Telescope (VLT). The grasp of the large collecting area offered by the VLT (8.2m diameter), combined with the large multiplex and …

gb, ch, fr, it, cl (code pays fourni par la source)

An end-to-end instrument model for the proposed E-ELT instrument METIS

Eva Schmalzl, Jeff Meisner, L. Venema, Sarah Kendrew et autres

The optimal performance of an instrument relies critically on accurate performance estimates during its design phase. They need to be modeled to give the science and engineering teams a preview of the performance of the instrument, to guide the design process, to …

nl, gb, de, ch, fr (code pays fourni par la source)

MOONS: a multi-object optical and near-infrared spectrograph for the VLT

M. Cirasuolo, J. Afonso, Ralf Bender, P. Bonifacio et autres

MOONS is a new conceptual design for a Multi-Object Optical and Near-infrared Spectrograph for the Very Large Telescope (VLT), selected by ESO for a Phase A study. The baseline design consists of ~1000 fibers deployable over a field of view of ~500 …

gb, de, fr, nl, it, cl (code pays fourni par la source)