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Evaluation of a liquid crystal based polarization modulator for a space mission thermal environment
(Elsevier B.V., 2017-10-15)
The Multi Element Telescope for Imaging and Spectroscopy (METIS) is one of the remote sensing instruments to be onboard the future NASA/ESA Solar Orbiter mission. The science nominal mission orbit will take the spacecraft ...
Interrelations between astrochemistry and galactic dynamics
(Frontiers Media S. A., 2021-05)
This paper presents a review of ideas that interconnect Astrochemistry and Galactic Dynamics. Since these two areas are vast and not recent, each one has already been covered separately by several reviews. After a general ...
LLAMA Project
(Universidad Autónoma de México. Instituto de Astronomía, 2014)
LLAMA, acronymum of Long Latin American Millimetre Array, is a joint scientific and technological undertaking of Argentina and Brazil whose main goal is to install and to operate a 12m dish capable of studyingthe Universe ...
Smart Readout of Nondestructive Image Sensors with Single Photon-Electron Sensitivity
(American Physical Society, 2021-12)
Image sensors with nondestructive charge readout provide single-photon or single-electron sensitivity, but at the cost of long readout times. We present a smart readout technique to allow the use of these sensors in visible ...
The moon phase anomaly in the Antikythera Mechanism
(New York University. Institute for the Study of the Ancient World, 2016-05)
The Antikythera Mechanism is a mechanical astronomical instrument that was discovered in an ancient shipwreck at the beginning of the twentieth century, made about the second century B.C. It had several pointers showing ...
Espectroscopía de campo integral de nebulosas planetarias : observaciones MUSE-VLT de IC418
(2020)
Más de 250 años despúes de que Charles Messier observara por primera vez la nebulosa Dumbbell, y 150 años de que Huggins tomara el primer espectro de una Nebulosa Planetaria (NP), aún hoy continúan existiendo muchos aspectos ...
Newly discovered global temperature structures in the quiet sun at solar minimum
(IOP Publishing, 2012-08)
Magnetic loops are building blocks of the closed-field corona. While active region loops are readily seen in images taken at EUV and X-ray wavelengths, quiet-Sun (QS) loops are seldom identifiable and are therefore difficult ...
Optical spectroscopy and X-ray observations of the D-type symbiotic star EF Aql
(Wiley Blackwell Publishing, Inc, 2020-06)
We performed high-resolution optical spectroscopy and X-ray observations of the recently identified Mira-type symbiotic star EF Aql. Based on high-resolution optical spectroscopy obtained with the Southern African Large ...
A new method to estimate cloud cover fraction over El Leoncito Observatory from an all-sky imager designed for upper atmosphere studies
(Univ Chicago Press, 2013-01)
A method for determining cloud cover fraction over El Leoncito Observatory (31.8°S, 69.3°W) is presented. Data from an all-sky imaging system, designed to measure nightglow originating from the mesosphere and thermosphere, ...