Ultraviolet polarimeter for characterization of an imaging spectrometer

1990 ◽  
Author(s):  
M. F. Morgan ◽  
Russell A. Chipman ◽  
Douglas G. Torr
Keyword(s):  
Imaging Spectrometer

Use of an Imaging Spectrometer for Characterization of a Cesium Dosimeter Calibration Facility

2020 ◽  
Vol 118 (4) ◽  
pp. 462-469
Author(s):  
Roger J. Champion ◽  
Robert M. Golduber ◽  
Kimberlee J. Kearfott
Keyword(s):  
Imaging Spectrometer ◽  
Calibration Facility

scholarly journals Characterization of a two-color pump–probe setup at FLASH using a velocity map imaging spectrometer

2010 ◽  
Vol 35 (24) ◽  
pp. 4163 ◽  
Author(s):  
P. Johnsson ◽  
A. Rouzée ◽  
W. Siu ◽  
Y. Huismans ◽  
F. Lépine ◽  
...  
Keyword(s):  
Velocity Map Imaging ◽  
Imaging Spectrometer ◽  
Pump Probe

Initial Characterization of Active Transitioning Centaur, P/2019 LD2 (ATLAS)

2021 ◽  
Author(s):  
Bryce Bolin ◽  
Yanga Fernandez ◽  
Carey Lisse ◽  
Timothy Holt
Keyword(s):  
Cross Section ◽  
Hubble Space Telescope ◽  
Gas Production ◽  
Wide Field ◽  
Imaging Spectrometer ◽  
Space Telescope ◽  
Resolution Imaging ◽  
Array Camera

<p>We present visible and mid-infrared imagery and photometry of temporary Jovian co-orbital comet P/2019 LD2 taken with Hubble Space Telescope/Wide Field Camera 3 (HST/WFC3), Spitzer Space Telescope/Infrared Array Camera (Spitzer/IRAC), and the GROWTH telescope network, visible spectroscopy from Keck/Low-Resolution Imaging Spectrometer (LRIS), and archival Zwicky Transient Facility observations taken between 2019 April and 2020 August. Our observations indicate that the nucleus of LD2 has a radius between 0.2 and 1.8 km assuming a 0.08 albedo and a coma dominated by ∼100 μm-scale dust ejected at ∼1m s−1 speeds with a ∼1'' jet pointing in the southwest direction. LD2 experienced a total dust mass loss of ∼108 kg at a loss rate of ∼6 kg s<sup>−1</sup> with Afρ/ cross-section varying between ∼85 cm/125 km<sup>2</sup> and ∼200 cm/310 km<sup>2</sup> from 2019 April 9 to 2019 November 8. If the increase in Afρ/cross section remained constant, it implies LD2ʼs activity began ∼2018 November when within 4.8 au of the Sun, implying the onset of H2O sublimation. We measure CO/CO<sub>2</sub> gas production of <10<sup>27</sup> mol s<sup>−1</sup>/<10<sup>26</sup> mol s<sup>−1</sup> from our 4.5 μm Spitzer observations; g–r = 0.59 ± 0.03, r–i = 0.18 ± 0.05, and i– z = 0.01 ± 0.07 from GROWTH observations; and H2O gas production of <80 kg s<sup>−1</sup> scaling from our estimated C<sub>2</sub> production of Q<sub>C2</sub> < 7.5 x 10<sup>24</sup> mol s<sup>−1</sup> from Keck/LRIS spectroscopy. We determine that the long-term orbit of LD2 is similar to Jupiter-family comets having close encounters with Jupiter within ∼0.5 Hill radius in the last ∼3 y and within 0.8 Hill radius in ∼9 y. Additionally, 78.8% of our orbital clones are ejected from the solar system within 10<sup>6</sup> yr, having a dynamical half-life of 3.4 × 10<sup>5</sup> yr.</p>

The pre-launch characterization of SIMBIO-SYS/VIHI imaging spectrometer for the BepiColombo mission to Mercury. I. Linearity, radiometry, and geometry calibrations

2017 ◽  
Vol 88 (9) ◽  
pp. 094502 ◽  
Author(s):  
Gianrico Filacchione ◽  
Fabrizio Capaccioni ◽  
Francesca Altieri ◽  
Cristian Carli ◽  
Iacopo Ficai Veltroni ◽  
...  
Keyword(s):  
Imaging Spectrometer

scholarly journals Low Energy Characterization of Caliste HD, a Fine Pitch CdTe-Based Imaging Spectrometer

2013 ◽  
Vol 60 (5) ◽  
pp. 3824-3832 ◽  
Author(s):  
Sebastien Dubos ◽  
Olivier Limousin ◽  
Claire Blondel ◽  
Remi Chipaux ◽  
Youri Dolgorouky ◽  
...  
Keyword(s):  
Low Energy ◽  
Imaging Spectrometer ◽  
Fine Pitch

scholarly journals Mineralogical characterization of Juventae Chasma, Mars: evidences from MRO-CRISM

2014 ◽  
Vol XL-8 ◽  
pp. 477-479
Author(s):  
M. Singh ◽  
V. J. Rajesh
Keyword(s):  
Wavelength Region ◽  
Absorption Bands ◽  
Hydrous Mineral ◽  
Mineralogical Characterization ◽  
Imaging Spectrometer ◽  
Spectral Signatures ◽  
Valles Marineris ◽  
Full Resolution ◽  
Significant Region

Juventae Chasma is a long depression associated with Valles Marineris and this study discusses the spectral observation made after analysing the Mars Reconnaissance Orbiter (MRO) Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) Full Resolution targeted (FRT) Images in the wavelength region of 1000–2600 nm. Observations reveal the presence of hydrous sulphates, pyroxenes (mafic minerals) and silica rich minerals, more likely opaline silica or glass. Hydrous mineral identified shows the absorption bands, which are more consistent with gypsum. Absorption bands at 2300–2350 nm, and 2500–2550 nm, which are characteristics of carbonates, have been also identified in the region. Presence of this mineral assemblage, confirmed by the observed spectral signatures ranging from volcanic to sedimentary origin, implies a relatively geologically active area, and a significant region in terms of aqueous activity.

scholarly journals Fast Cross-Linking-Characterization of Waveguide-Polymers on Wafers by Imaging Low-Coherence Interferometry

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1046
Author(s):  
Christopher Taudt ◽  
Bryan Nelsen ◽  
Sandra Schlögl ◽  
Edmund Koch ◽  
Peter Hartmann
Keyword(s):  
Refractive Index ◽  
Cross Linking ◽  
Imaging Spectrometer ◽  
Low Coherence ◽  
Spatially Resolved ◽  
Low Coherence Interferometry ◽  
Novel Method ◽  
Phase Data

This work introduces a novel method to characterize cross-linking differences in spincast polymers for waveguide applications. The method is based on a low-coherence interferometer which utilizes an imaging spectrometer to gather spatially resolved data along a line without the need for scanning. The cross-linking characterization is performed by the determination of the wavelength-dependent optical thickness. In order to do this, an algorithm to analyze the wrapped phase data and extract refractive index information is developed. Finally, the approach is tested on photo-lithographically produced samples with lateral refractive index differences in pitches of 50 μm.

Characterization of aerosol-containing chemical simulant clouds using a sensitive, thermal infrared imaging spectrometer

2011 ◽  
Author(s):  
Jeffrey L. Hall ◽  
Francis M. D'Amico ◽  
Steven J. Kolodzey ◽  
Jun Qian ◽  
Mark L. Polak ◽  
...  
Keyword(s):  
Infrared Imaging ◽  
Thermal Infrared ◽  
Imaging Spectrometer ◽  
Thermal Infrared Imaging
Sign in / Sign up

Export Citation Format

Share Document