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AKARI OBSERVATIONS OF THE FLUCTUATIONS OF THE NEAR-INFRARED BACKGROUND II

H.J. Seo, H.M. Lee, T. Matsumoto, W.S. Jeong, M.G. Lee, J. Pyo
2017 Publications of The Korean Astronomical Society  
We report a spatial fluctuation analysis of the sky brightness in the near-infrared from observations towards the north ecliptic pole (NEP) by AKARI at 2.4 and 3.2 µm.  ...  We finally obtained mosaicked images which can be used for the study of various diffuse emissions in the near-infrared sky and found that there are spatial structures in the mosaicked images using a power  ...  Mosaicked images in the bottom panel of Figure 1 can be used for the study of various diffuse emissions in the near-infrared sky.  ... 
doi:10.5303/pkas.2017.32.1.327 fatcat:c7cwxqrp5nfbvdpcn63hmguuie

Special Issue on Diffuse Optical Spectroscopy: Advances towards Widespread Applications

Alberto Dalla Mora
2021 Applied Sciences  
Light is a powerful tool for the non-invasive and non-destructive analysis of several organic and inorganic materials [...]  ...  .; Merla, A.; Lombardo, S. Imaging System Based on Silicon Photomultipliers and Light Emitting Diodes for Functional Near-Infrared Spectroscopy. Appl. Sci. 2020, 10, 1068. [CrossRef] 13.  ...  under investigation [1–4], diffuse correlation spectroscopy, diffuse optical imaging/tomography, and functional near-infrared spectroscopy target a depth of few  ... 
doi:10.3390/app112311548 fatcat:gbh3av34effmppxukz4bj2f2am

AKARIOBSERVATION OF THE SUB-DEGREE SCALE FLUCTUATION OF THE NEAR-INFRARED BACKGROUND

H. J. Seo, Hyung Mok Lee, T. Matsumoto, W.-S. Jeong, Myung Gyoon Lee, J. Pyo
2015 Astrophysical Journal  
on the comparison with mid- and far-infrared brightness, ground based near-infrared images.  ...  We report spatial fluctuation analysis of the sky brightness in near-infrared from observations toward the north ecliptic pole (NEP) by the AKARI at 2.4 and 3.2 micron.  ...  -Left: correlations between the near-infrared mosaic images and the far-infrared mosaic image at 90 µm taken by AKARI /FIS. Error bars represent the standard deviations of the noise images.  ... 
doi:10.1088/0004-637x/807/2/140 fatcat:myvjg7tm3ne57c7rnhxcnxfvti

Star Formation in Bok Globules: Near-Infrared Survey of a Southern Sky Sample

N. C. Santos, J. L. Yun, C. A. Santos, R. G. Marreiros
1998 Astronomical Journal  
We performed a near-infrared imaging survey toward 23 Bok globules in the southern sky containing IRAS point sources.  ...  Analysis of the nearinfrared nebulosities present in the images revealed that (1) these nebulosities generally contain one or more stellar-like sources surrounded by a more or less extended component ;  ...  THE PRESENCE OF COUNTERPARTS IN NEAR-INFRARED IMAGES We Ðrst consider the YSO candidates for which no nebular or stellar counterpart was detected by visual inspection of the near-infrared images (a ""  ... 
doi:10.1086/300502 fatcat:nkki5d5vwbdulhbdtvfriutdlq

Simultaneous functional magnetic resonance and near-infrared imaging of adult human brain

Vladislav Y. Toronov, Andrew Webb, Jee H. Choi, Martin Wolf, Enrico Gratton, Dennis M. Hueber, Britton Chance, Robert R. Alfano, Bruce J. Tromberg, Mamoru Tamura, Eva M. Sevick-Muraca
2001 Optical Tomography and Spectroscopy of Tissue IV  
The aim of this study was to compare functional cerebral hemodynamic signals obtained simultaneously by near infrared spectroscopy (NIRS) and by functional magnetic resonance imaging (fMRI).  ...  Although the spatial resolution of near-infrared imaging is limited by the nature of light propagation in tissue, potentially it can reach a level acceptable for practical applications.  ...  INTRODUCTION Functional magnetic resonance imaging (fMRI) 1 is a key method for studying brain function. It has no penetration limits and provides high spatial resolution.  ... 
doi:10.1117/12.434517 fatcat:5cejl6acsrak3ljjphhpffgqqa

The Infrared Luminosity Function in the 30 Dor Cluster

Hans Zinnecker, Morten Andersen, Bernhard Brandl, Wolfgang Brandner, Deidre Hunter, Richard Larson, Mark McCaughrean, Georges Meylan, Andrea Moneti
2002 Symposium - International astronomical union  
Contrary to recent optical studies based on a V vs. V—I diagram (Sirianni et al. 2000), we do not infer a flattening or turnover of the implied IMF slope near 2 M⊙.  ...  We present the first infrared luminosity function in the 30 Doradus star cluster obtained with the HST NIC1 camera (0.043″ pixel−1) in the F160W (H-band) filter.  ...  s participation was made possible through a grant from the LOC and the Astronomische Gesellschaft for which he is grateful.  ... 
doi:10.1017/s0074180900224340 fatcat:x5ndwgqesze7jbfzx22fej5cym

Using various infrared techniques for assessing timber structures

Jakub Sandak, Anna Sandak
2017 International Journal of Computational Methods & Experimental Measurements  
Near-and mid-infrared spectroscopies as well as hyperspectral and thermal imaging in different configurations are briefly described with a special focus on the specific application in assessment of timber  ...  Infrared is a part of electromagnetic spectrum not visible for the human eye, but contain important information regarding material status.  ...  A brief summary of the infrared techniques suitable for implementation toward timber structures assessment is presented in Table 1 .  ... 
doi:10.2495/cmem-v5-n6-858-871 fatcat:dha2cff4ava2dolmgmkvjpwal4

Two Distant Embedded Clusters in the Outer Galaxy

Carlos A. Santos, João L. Yun, Dan P. Clemens, Rui J. Agostinho
2000 Astrophysical Journal  
The clusters are resolved in near-infrared images and seen as enhancements in the surface density of IR-excess stars centered close to IRAS 07255Ϫ2012.  ...  They all exhibit near-infrared color excesses consistent with young stellar objects having circumstellar and/or envelope material.  ...  Standard procedures for near-infrared image reduction were applied (e.g., Yun & Clemens 1994) , resulting in a final mosaic image for each band.  ... 
doi:10.1086/312877 fatcat:azoauitey5fehi5vtoepkbjnzi

An IR image processing approach for characterising combustion instability

M. Chimenti, C. Di Natali, G. Mariotti, E. Paganini, G. Pieri, O. Salvetti
2004 Infrared physics & technology  
The paper presents a first approach to the analysis of the dynamic behaviour of a premixed hydrogen/air jet flame using near-IR imaging.  ...  In our analysis, we considered two different layers: the single images, as a distribution of near-IR emission, and the complete sequence of images in a dynamical evolution of the whole process.  ...  Acknowledgments The authors would greatly thank Aurelio Cipriano, Enel, for his valuable contribution in the operation of the experimental burner and of the related instrumentation.  ... 
doi:10.1016/j.infrared.2004.03.007 fatcat:t75pme2nffb5ndsfkrnprgodrm

Enhancing the Performance of Commercial Infrared Detectors by Surface Plasmons

Kirsi Tappura
2018 Proceedings (MDPI)  
Additionally, high potential for cost reduction in high-performance IR imaging systems with multicolour capabilities is foreseen.  ...  The results suggest that improved, or new, pixel-level functionalities can be created for commercial IR detectors by relatively simple means.  ...  Acknowledgments: This project has received funding from the Finnish Scientific Advisory Board for Defence (MATINE) and partially from VTT Technical Research Centre of Finland Ltd.  ... 
doi:10.3390/proceedings2130063 fatcat:75djf5gvezasll3oal2342gaia

Enhancing the Performance of Commercial Infrared Detectors by Surface Plasmons

Kirsi Tappura
2018 Proceedings (MDPI)  
Additionally, high potential for cost reduction in high-performance IR imaging systems with multicolour capabilities is foreseen.  ...  The results suggest that improved, or new, pixel-level functionalities can be created for commercial IR detectors by relatively simple means.  ...  Acknowledgments: This project has received funding from the Finnish Scientific Advisory Board for Defence (MATINE) and partially from VTT Technical Research Centre of Finland Ltd.  ... 
doi:10.3390/proceedings2131063 fatcat:mc2w7rbp4rdmbjph3mnyu3ms6m

Analysis of K-band imaging of the wide binary system σ CrB with the Lick Observatory NGS AO system

Kenneth J. Mighell, Julian C. Christou, Jack D. Drummond
2006 Advances in Adaptive Optics II  
Future directions that this research can go towards achieving the goal of routinely obtaining precise and accurate photometry and astrometry based on near-infrared AO observations are described.  ...  The stellar images were reduced using three different analysis techniques: (1) Parametric Blind Deconvolution, (2) Multi-Frame Blind Deconvolution, and (3) the MATPHOT stellar photometry code.  ...  This work has been supported by a grant from the National Aeronautics and Space Administration (NASA), Interagency Order No.  ... 
doi:10.1117/12.670574 fatcat:nlme57sb4nerpaznrypili2s5e

Front Matter: Volume 11074

Hamid Dehghani, Heidrun Wabnitz
2019 Diffuse Optical Spectroscopy and Imaging VII  
Publication of record for individual papers is online in the SPIE Digital Library. SPIEDigitalLibrary.org Paper Numbering: Proceedings of SPIE follow an e-First publication model.  ...  using a Base 36 numbering system employing both numerals and letters.  ...  bioluminescence imaging [11074-23] 11074 13 A near-infrared hyperspectral imaging system for quantitative monitoring of hemodynamics and metabolism on the exposed cortex of mice [11074-24] NOVEL  ... 
doi:10.1117/12.2542441 fatcat:xiehwtm7lzbidifieqhsr4tram

TEM Image Analysis of Self-Organized Large Gold Nanoparticle Arrays

Steven L. Tripp, Beomseok Kim, Alexander Wei
2002 Microscopy and Microanalysis  
The arrays exhibit sizedependent extinction maxima, which shift toward near-infrared wavelengths with increasing periodicity.  ...  (Northwestern University) for use of their spectrophotometers and film deposition equipment and Prof. Alex King (Purdue University) for helpful discussions regarding TEM analysis.  ...  The arrays exhibit sizedependent extinction maxima, which shift toward near-infrared wavelengths with increasing periodicity.  ... 
doi:10.1017/s1431927602103746 fatcat:mrtchnb4tnfktp7cp2yjvpghmq

Experimental investigation on the light transmission of a textile-based over-cap used in functional near-infrared spectroscopy

Habib Sherkat, Terje Gjøvaag, Peyman Mirtaheri, Hamid Dehghani, Heidrun Wabnitz
2019 Diffuse Optical Spectroscopy and Imaging VII  
Functional near-infrared spectroscopy as an optical (i.e., light-based) neuroimaging technique is susceptive to ambient light noise.  ...  The results revealed that the output signal of functional near-infrared spectroscopy could be contaminated significantly by the ambient light.  ...  INTRODUCTION The trend toward miniaturization and portability of functional near-infrared spectroscopy has paved the way toward portable cognitive monitoring researches.  ... 
doi:10.1117/12.2526539 fatcat:dpiv6auhvzbmneqixrucjj6rpa
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