A5048230114- Adaptive optics and wavefront sensing
- Astronomy and Astrophysical Research
- Stellar, planetary, and galactic studies
- Radio Astronomy Observations and Technology
- Pulsars and Gravitational Waves Research
- Astrophysics and Cosmic Phenomena
- Astronomical Observations and Instrumentation
- Optical Systems and Laser Technology
- Photonic and Optical Devices
- Optical Coatings and Gratings
- Advanced optical system design
- Advanced Fiber Optic Sensors
- Sensor Technology and Measurement Systems
- Advanced MEMS and NEMS Technologies
- Optical measurement and interference techniques
- Galaxies: Formation, Evolution, Phenomena
- Calibration and Measurement Techniques
- Collaboration in agile enterprises
- Service-Oriented Architecture and Web Services
- Semiconductor Lasers and Optical Devices
- Cosmology and Gravitation Theories
- Astro and Planetary Science
- Green IT and Sustainability
- Software System Performance and Reliability
- History and Developments in Astronomy
Universidade de São Paulo
2021-2022
Federal Center for Technological Education Celso Suckow da Fonseca
2021
Universidade Federal de São Carlos
2010
Context. Observations of the redshifted 21-cm line neutral hydrogen (H I ) are a new and powerful window observation that offers us possibility to map spatial distribution cosmic H learn about cosmology. Baryon Acoustic Oscillations from Integrated Neutral Gas (BINGO) is unique radio telescope designed be one first probe baryon acoustic oscillations (BAO) at frequencies. Aims. BINGO has two science goals: cosmology astrophysics. Cosmology main goal driver for BINGO’s design strategy. The key...
A group of newly observed extreme trans-Neptunian objects exhibit unexpected orbital confinement, characterized by the alignment angular momentum vectors and apsidal lines. It is proposed that an undiscovered giant planet, named Planet-9, exists in solar system's outer regions causes this clustering. Initial studies suggested Planet-9 could have a mass 15 Earth masses. However, such massive planet strongly interacts with scattered disk (SDOs; 50 < 1000 au) influences orbits short-period...
Abstract Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS) is a first-light moderate-dispersion imaging spectrograph under development at the Center for Astrophysics Steiner Institute Telescope. GMACS operates between 330 1050 nm with resolution 1000 < R 5000 using 0 <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:mover accent="true"> <mml:mrow> <mml:mi>.</mml:mi> </mml:mrow> <mml:mi>″</mml:mi> </mml:mover>...
The BINGO telescope was designed to measure the fluctuations of 21-cm radiation arising from hyperfine transition neutral hydrogen and aims Baryon Acoustic Oscillations (BAO) such fluctuations, therefore serving as a pathfinder future deeper intensity mapping surveys. requirements for Phase 1 projects consider large reflector system (two 40 m-class dishes in crossed-Dragone configuration), illuminating focal plane with 28 horns sky two circular polarisations drift scan mode produce...
We describe a preliminary conceptual optomechanical design for GMACS, wide-field, multi-object, moderate resolution optical spectrograph the Giant Magellan Telescope (GMT). This paper describes details of GMACS design, including requirements and considerations leading to mechanisms, mounts, predicted flexure performance.
We present a preliminary conceptual optical design for GMACS, wide field, multi-object, spectrograph currently being developed the Giant Magellan Telescope (GMT). include details of requirements derived from instrument scientific and technical objectives demonstrate how these are met by current design. Detector specifications, field acquisition/alignment optics, considerations active flexure control system also discussed.
We discuss the latest developments of a spectrograph for Giant Magellan Telescope. The instrument is designed to provide high throughput, moderate resolution, optical spectra telescope and be capable flexible rapid reconfiguration. focal plane can populated with custom slit masks or multiple fibers, allowing observations objects simultaneously.
MANIFEST is a multi-object fibre positioner for the Giant Magellan Telescope that uses 'Starbug' robots to accurately position units across telescope's focal plane. MANIFEST, when coupled planned seeing-limited instruments, GMACS and GCLEF, offers access to: larger fields of view; higher multiplex gains; versatile plane reformatting via multiple integral-field-units; increased spectral resolution using image-slicers; capability simultaneous observations with instruments; possibility...
We describe the optical design of GMACS, a multi-object wide field spectrograph currently being developed for Giant Magellan Telescope (GMT). Optical spectrographs emerging generation Extreme Large Telescopes (ELTs) have unique issues. For example, combination both largest view practical and beam widths achieving desired spectral resolutions force seeing limited ELT to include large refractive elements, which in turn requires compromise between performance, manufacturability, operability....
An important tool for the development of next generation extremely large telescopes (ELTs) is a robust Systems Engineering (SE) methodology. GMACS first-generation multi-object spectrograph that will work at visible wavelengths on Giant Magellan Telescope (GMT). In this paper, we discuss application SE to design next-generation instruments ground-based astronomy and present ongoing products spectrograph, currently in its Conceptual Design phase. provides means assist management complex...
We present the current optical design of GMACS, a multi-object wide field spectrograph currently being developed for Giant Magellan Telescope, member emerging generation Extremely Large Telescopes (ELTs). Optical spectrographs ELTs have unique challenges and issues. For example, combination largest practical view beam widths necessary to achieve desired spectral resolutions force seeing limited ELT include aspheric lenses, broadband dichroics, volume phase holographic gratings - all...
We describe the latest optomechanical design of GMACS, a wide-field, multi-object, moderate-resolution optical spectrograph for Giant Magellan Telescope (GMT). Specifically, we discuss details structure, mechanisms, mounts and deflection tracking/compensation as well requirements considerations used to guide design. also GMACS's interfaces with GMT other instruments.
We describe the current electronics prototypes for Flexure Compensation System (FCS) and Slit Mask Exchange Mechanism (SMEM) GMACS, a wide-field, multi-object, moderate-resolution optical spectrograph Giant Magellan Telescope (GMT). discuss details of FCS SMEM prototypes, how relate to preliminary conceptual designs these systems, what information give that can be applied final design, as well possible next steps each prototype.
The Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS) is a first light instrument for the (GMT). It will provide multi-object spectroscopy in wide wavelength coverage field of view. scientific objectives include exoplanet atmospheres, star formation chemical evolution studies, galaxy assembly histories, intergalactic medium tomography. optical layouts are optimized to have high throughput natural seeing limit. In this presentation, we report current...
We describe the camera articulation prototype (CAP) for Giant Magellan Telescope Multi-object Astronomical and Cosmological Spectrograph (GMACS), which is a wide field, multi-object, moderate-resolution, optical spectrograph of (GMT). The GMACS will have Camera Grating Articulation System (CGAS) has two independent cameras grating modules. angles can be changed to adjust dispersed light bands on detector. electronics components this system include motors with encoder, pneumatic brakes, limit...
Large or complex systems tend to be challenging when it comes managing their project and construction while keeping the costs at an acceptable level. Systems Engineering aims not only reduce that difficulty by systematically owing down top-level user needs bottom level parts specification, but also describing full aspects of its lifecycle. Moreover, together with Management, they aid completion intricated projects, such as professional telescopes. This paper shows how Management are helping...
The work presented here demonstrates the feasibility of using single-mode fibers an optical Internet network to deliver visible light between separate laboratories as a way perform remote spectroscopy in for teaching purposes. coupling broadband source into fiber (SMF) and characterization losses function wavelength are discussed. Sample spectra were measured with portable spectrometer controlled by acquisition program developed LabVIEW software that allows data be collected analyzed.