Results 41 to 50 of about 1,141 (166)

Autonomous spectrographic system to analyse the main elements of fireballs and meteors

Earth, Planets and Space, 2018
We present a meteor observation system based on imaging CCD cameras, wide-field optics and a diffraction grating. This system is composed of two independent spectrographs with different configurations, which allows us to capture images of fireballs and ...
Francisco Ángel Espartero, Germán Martínez, Marta Frías, Francisco Simón Montes Moya, Alberto Javier Castro-Tirado   +4 more
doaj   +1 more source

Mobile Micro-X-ray Fluorescence Analysis (XRF) on Medieval Paintings

CHIMIA, 2008
X-ray fluorescence has long been applied to objects of art and archaeology for non-destructive elemental analysis. When the object under investigation is either too big or too fragile to be moved a mobile instrument is needed which can be ...
Christoph Herm
doaj   +1 more source

Audio-in-Image Steganography Using Analysis and Resynthesis Sound Spectrograph

IEEE Access
Steganography is the practice of concealing secret information within a non-secret medium, such as an image or audio file, to prevent detection by unauthorised observers.
A. Aravind Krishnan, Yukta Ramesh, Udbhav Urs, Megha Arakeri   +3 more
doaj   +1 more source

Research on Field-of-View Reconstruction Technology of Specific Bands for Spatial Integral Field Spectrographs

Photonics
Integral field technology, as an advanced spectroscopic imaging technique, can be used to acquire the spatial and spectral information of the target area simultaneously.
Jie Song, Yuyu Tang, Jun Wei, Xiaoxian Huang   +3 more
doaj   +1 more source

gateau: An observation simulator for ground-based submillimetre astronomy with integral field units and kinetic inductance detectors

Astronomy & Astrophysics
Aims. We have developed gateau, a modular, flexible, and efficient end-to-end simulator for submillimetre (submm) integral field units (IFUs) that use kinetic inductance detectors (KIDs).
Moerman A., Soshnin N., Brackenhoff S. A., Dabironezare S. O., Karatsu K., Marting L. H., de Rooij S. A. H., Roos M., Brandl B. R., Endo A.   +9 more
doaj   +1 more source

DESHIMA 2.0: A 200–400 GHz ultra-wideband integrated superconducting spectrometer

Astronomy & Astrophysics
Context. The Deep Spectroscopic HIgh-redshift MApper (DESHIMA) is a broadband integrated superconducting spectrometer for millimeter (mm) and submillimeter (submm) wave astronomy based on kinetic inductance detectors (KIDs). The first generation, DESHIMA
Karatsu K., Endo A., Moerman A., Yates S. J. C., Huiting R., Laguna A. Pascual, Dabironezare S., Murugesan V., Thoen D. J., Buijtendorp B. T., Cray S., Fujita K., Hähnle S., Hanany S., Kawabe R., Kohno K., Marting L. H., Matsumura T., Nakatsubo S., Olde Scholtenhuis L. G. G., Oshima T., Rybak M., Steenvoorde F., Takaku R., Takekoshi T., Tamura Y., Taniguchi A., van der Werf P. P., Baselmans J. J. A.   +28 more
doaj   +1 more source

Up, Up, and Away: Winds and Dynamical Structure as a Function of Altitude in the Ultrahot Jupiter WASP-76b

The Astrophysical Journal
Due to the unprecedented signal strengths offered by the newest high-resolution spectrographs on 10 m class telescopes, exploring the 3D nature of exoplanets is possible with an unprecedented level of precision.
Aurora Y. Kesseli, Hayley Beltz, Emily Rauscher, I. A. G. Snellen   +3 more
doaj   +1 more source

Red-giant stars in eccentric binaries

EPJ Web of Conferences, 2015
The unparalleled photometric data obtained by NASA’s Kepler Space Telescope has led to improved understanding of red-giant stars and binary stars. We discuss the characterization of known eccentric system, containing a solar-like oscillating red-giant ...
Beck P. G., Hambleton K., Vos J., Kallinger T., Garcia R. A., Mathur S., Houmani K.   +6 more
doaj   +1 more source

Performance assessment of probe-based Raman spectroscopy systems for biomedical analysis. [PDF]

Biomed Opt Express, 2023
Fitzgerald S, Marple E, Mahadevan-Jansen A.   +2 more
europepmc   +1 more source

Radial velocity and atmospheric parameter calculations for the GaiaNIR spectrograph

Astronomy & Astrophysics
Context. The upcoming GaiaNIR mission is currently planning to add a near-infrared spectrograph to its payload in order to enhance its scientific return, particularly for mapping the dust-obscured regions of the Milky Way. Aims.
Mészáros Szabolcs, Hobbs David, Liptrott Anna, Katz David, Schiavon Ricardo, Pap Viktória, Brown Anthony G. A., Seabroke George, Bland-Hawthorn Joss, Blomme Ronny, Walton Nicholas A.   +10 more
doaj   +1 more source