A5053931030- Astronomy and Astrophysical Research
- Astronomical Observations and Instrumentation
- Adaptive optics and wavefront sensing
- Stellar, planetary, and galactic studies
- Engineering and Information Technology
- Distributed and Parallel Computing Systems
- Oceanographic and Atmospheric Processes
- Advanced Data Storage Technologies
- Gamma-ray bursts and supernovae
- Optical Systems and Laser Technology
- Luminescence and Fluorescent Materials
- Advertising and Communication Studies
- Molecular Sensors and Ion Detection
- Argentine historical studies
- Environmental and Ecological Studies
- Oil Spill Detection and Mitigation
- Political and Social Dynamics in Chile and Latin America
- Architecture, Art, Education
- Parallel Computing and Optimization Techniques
- Marine and coastal ecosystems
- Underwater Vehicles and Communication Systems
- Health and Medical Education
- Public Health and Environmental Issues
- Conducting polymers and applications
- Spectroscopy and Laser Applications
ift Rosenheim
2024
Peruvian University of Applied Sciences
2024
Escuela Internacional de Negocios y Desarrollo Empresarial de Colombia
2021
Isaac Newton Group
2008-2020
Universidad Nacional de Colombia
2019
Instituto de Física de Cantabria
2004-2005
Universidad de Cantabria
2004-2005
We present an overview of and status report on the WEAVE next-generation spectroscopy facility for William Herschel Telescope (WHT). principally targets optical ground-based follow up upcoming (LOFAR) space-based (Gaia) surveys. is a multi-object multi-IFU utilizing new 2-degree prime focus field view at WHT, with buffered pick-and-place positioner system hosting 1000 (MOS) fibres, 20 integral units, or single large IFU each observation. The fibres are fed to spectrograph, pair 8k(spectral)...
We present the Final Design of WEAVE next-generation spectroscopy facility for William Herschel Telescope (WHT), together with a status update on details manufacturing, integration and overall project schedule now that all major fabrication contracts are in place. also summary current planning behind 5-year initial phase survey operations. will provide optical ground-based follow up (LOFAR) space-based (Gaia) surveys. is multi-object multi-IFU utilizing new 2-degree prime focus field view at...
Recent advances in adaptive optics (AO) have led to the implementation of wide field-of-view AO systems. A number wide-field systems are also planned for forthcoming Extremely Large Telescopes. Such multiple wavefront sensors different types, and usually deformable mirrors (DMs). Here, we report on our experience integrating cameras DMs with real-time control two These CANARY, which has been operating on-sky since 2010, DRAGON, is a laboratory demonstrator instrument. We detail issues...
We present an update on the overall integration progress of WEAVE next-generation spectroscopy facility for William Herschel Telescope (WHT), now scheduled first light in early-2021, with almost all components arrived at observatory. also a summary current planning behind 5-year initial phase survey operations, and some detailed end-to-end science simulations that have been implemented to evaluate final on-sky performance after data processing. will provide optical ground-based follow up...
Wide-field multi-object spectroscopy is a high priority for European astronomy over the next decade. Most 8-10m telescopes have small field of view, making 4-m class particularly attractive option wide-field instruments. We present science case and design drivers spectrograph (MOS) with integral units 4.2-m William Herschel Telescope (WHT) on La Palma. The instrument intends to take advantage future prime-focus corrector atmospheric-dispersion (Agocs et al, this conf.) that will deliver view...
Initially, two parent molecules were designed to possess semiconductor features based on 1−H−borole. Each molecule has active sites available abduct ammonia since both and boron behave as a Lewis acid base, respectively. Taking the molecules, five derivatives obtained using hydrogen (H), fluorine (F), methyl (Met), tert-butyl (Tert), phenyl (Phen) groups, aiming modulate acidity of boron. The molecular geometries from their derivatives, well complexes, optimised Gaussian 09 package with...
AF2+WYFFOS is the multi-object one degree field-of-view fibre-fed spectrograph at prime focus of 4.2 m William Herschel Telescope (WHT) Observatorio del Roque de Los Muchachos (ORM). Demand for this has been decreasing over years due to its low overall throughput. Given strategic importance multi-fibre spectroscopy WHT's future, with coming WEAVE (the powerful next-generation WHT be commissioned in 2017), during 2013 and 2014 ING staff carried out an end-to-end analysis reasons The...
GLAS is an upgrade of the William Herschel Telescope's existing natural-guide-star (NGS) AO system NAOMI to incorporate a 20-W Rayleigh laser guide star (LGS) projected altitude 15 km. It currently being commissioned on-sky, and we review here current status project. GLAS/NAOMI delivers dramatic improvements in PSF both near-IR (AO-corrected FWHM close diffraction limit, >~ 0.15 arcsec) optical (factor ~ 2 reduction FWHM). The performance similar that with NGS, consistent predictions from...
Abstract Through-wall morphology of high-pH SCC (HpH SCC) cracks and near-neutral-pH (NNpH tend to be distinctly different due the driving mechanisms. NNpH dozens (if not hundreds) micrometers wide throughout whole crack depth, whereas HpH are much tighter, narrowing down almost sub-micrometer width at tip. Both types can display varying degrees branching, in case SCC, some grow angles inclined away from perpendicular (i.e., through-wall direction). All these morphological complexities...
GLAS (Ground-layer Laser Adaptive optics System) provides a Rayleigh Guide Star (LGS) upgrade to the existing NAOMI AO system at 4.2-m William Herschel Telescope on La Palma. Installation of upgrades commenced in 2006 with on-sky commissioning taking place from May 2007. Commissioning was very successful and correction first observed during August 2007 observing run. Here we present an overview opto-mechanical systems that have been installed commissioned, including LGS launch system, safety...
WEAVE is the next-generation spectroscopic facility for William Herschel Telescope (WHT), offering multi-object (1000 fibres) and integral-field spectroscopy at two resolutions (R ~ 5000, 20000) over a 2-deg field of view prime focus. will (mainly) provide optical follow up ground-based (LOFAR) space-based (GAIA) surveys. First light expected in mid 2018. Here, we describe calibration unit, which be adapted from an existing unit AF2+WYFFOS spectrograph (WEAVE's precursor) WHT. We summarise...
The Laser Guide Star commissioned in 2007 at the WHT on La Palma is based Rayleigh backscattering of a 515 nm beam provided by diode pumped Q-switched doubled frequency Yb:YAG laser launched from behind secondary mirror. At time focused distance 15km above telescope ground and its power just under 20W. With such pulsed laser, careful fine tuning range gate system essential to isolate most part LGS eliminate parts plume which would degrade Shack-Hartmann spots consequently AO correction. This...
Introducción: El cáncer de colon y recto (CCR) es el tercer más frecuente la cuarta causa muerte por en mundo. En Colombia, tercera cáncer. La recomendación aceptada hacer tamización con colonoscopia personas 50 a 75 años. Sin embargo, recientemente Asociación Americana Cáncer (ACS) ha recomendado iniciar partir los 45 nuestro medio no hay estudios sobre prevalencia pólipos adenomatosos menores Objetivo: Comparar durante 45-49 años (casos) compararla (control). Materiales métodos: Estudios...