Emmanuel Chirre

Gemini North Adaptive Optics (GNAO) facility overview and status updates

Gaetano Sivo, J. Scharwächter, Manuel Lazo, Célia Blain et autres

The Gemini North Adaptive Optics (GNAO) facility is the upcoming AO facility for Gemini North providing a state-of-the-art AO system for surveys and time domain science in the era of JWST and Rubin operations. GNAO will be optimized to feed the Gemini …

Gemini North Adaptive Optics (GNAO) facility overview and status updates

Gaetano Sivo, J. Scharwächter, Manuel Lazo, Célia Blain et autres

The Gemini North Adaptive Optics (GNAO) facility is the upcoming AO facility for Gemini North providing a state-of-the-art AO system for surveys and time domain science in the era of JWST and Rubin operations. GNAO will be optimized to feed the Gemini …

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NOIRLab coating capabilities overview and collaboration

Emmanuel Chirre, Thomas Schneider, Michiel van der Hoeven, Slawomir Bucki

The mission of the optical engineering group is to provide the expertise in optics and coating for the NOIRLab observatories based in Chile and the United States. To ensure the deliverability on-time of a high-quality coating, the capabilities at each site have …

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Potential optical design of a multi-conjugate adaptive optics instrument based on a modified Offner concentric relay for Gemini North

Emmanuel Chirre, Gaetano Sivo, Julia Scharwaechter, Célia Blain et autres

The Gemini North Adaptive Optics (GNAO) project will deliver the first ground-based Adaptive Optics (AO) facility for wide-field studies on Mauna Kea in Hawaii. This document presents the potential optical design of a Multi-Conjugate Adaptive Optics (MCAO) instrument. In the aim of …

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GNAO: an MCAO facility for Gemini North

Gaetano Sivo, David M. Palmer, Julia Scahrwächter, Morten Andersen et autres

Gemini Observatory has been awarded a major funding from the National Science Foundation to build a complete new state of the art multi-conjugate adaptive optics system for Gemini North. The system will be designed to provide an MCAO facility delivering close to …

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The next-generation Gemini North Multi-Conjugate Adaptive Optics Facility

J. Scharwächter, Gaetano Sivo, Morten Andersen, Natalie Provost et autres

Gemini North Adaptive Optics (GNAO): an MCAO system for Gemini North towards Conceptual Design

Gaetano Sivo, David M. Palmer, J. Scharwächter, Morten Andersen et autres

Gemini Observatory has been awarded from the National Science Foundation a major fund to build a new state-of-the-art Multi Conjugate Adaptive Optics facility for Gemini North on Maunakea called GNAO. The current baseline system will use two lasers each split in two …

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Confirmation of laser-induced Raman scattering at Cerro Pachon

Gaetano Sivo, Morten Andersen, E. R. Carrasco, Cristian Moreno et autres

For many years now most major astronomical observatories have been using adaptive optics (AO) with the aid of optical or ultra-violet lasers to generate artificial guide stars. While the majority of laser-based AO systems in use have been used to feed infrared …

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Switching between two laser guide star facilities: an overview of the optomechanical design for the new laser beam injector at the Gemini South Observatory

Emmanuel Chirre, Cristian Moreno, Gabriel R. Pérez, Gaetano Sivo et autres

A motorized laser Beam Injector Module (BIM) has been designed to integrate the new Toptica SodiumStar 20/2 laser to the Beam Transfer Optics (BTO) subsystem of the Gemini South telescope. The main goal is to inject the new laser beam co-axially to …

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Dueling lasers! A comparative analysis of two different sodium laser technologies on sky

Eduardo Marín, Gaetano Sivo, François Rigaut, Marcos A. van Dam et autres

Sodium guide star technologies for Adaptive Optics (AO) have been around for over 20 years. During this time, the technologies for the lasers used to excite the mesospheric sodium have been in constant development, with the goals being not only to excite …

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An infusion of new blood using the Toptica laser with GeMS: results of the commissioning and science performance

Gaetano Sivo, Eduardo Marín, François Rigaut, Marcos A. van Dam et autres

Adaptive Optics (AO) systems aim at detecting and correcting for optical distortions induced by atmospheric turbulences. The Gemini Multi Conjugated AO System GeMS is operational and regularly used for science observations since 2013 delivering close to diffraction limit resolution over a large …

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Design of an open-view binocular sensor for the study of accommodation

Emmanuel Chirre

Objetivos:\nLos objetivos de esta tesis son:\n1. Desarrollo y calibración de un sensor binocular de Hartmann-Shack (H-S) infrarrojo (1050nm) que permita realizar medidas desapercibidas de acomodación en visión abierta con un seguimiento de pupila en tiempo real (25 Hz).\n2. Validación del instrumento en …