Results 131 to 140 of about 4,545 (163)
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Infrared Spectroscopy of Micro-Organisms near 3.4 μm in Relation to Geology and Astronomy
Astrophysics and Space Science, 1982Microorganisms sealed in KBr discs have an absorption spectrum over the 2.5-15 μm waveband that shows thermal stability as they are heated in an inert atmosphere to temperatures of about 400 °C. Microfossils tightly sealed within cavities in rocks could be endowed with similar properties of thermal stability.
F. Hoyle +3 more
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SPIREX-near infrared astronomy from the South Pole
Experimental Astronomy, 1994Over the next several years we will deploy a series of spectrometers, imagers, and telescopes at the South Pole as part of a project named SPIREX — for South Pole Infrared Explorer. Our goal is to survey a substantial area of the sky to study the origins of galaxies and stars.
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High Energy, Optical, and Infrared Detectors for Astronomy VIII, 2018
Mazin Lab at UCSB is developing MKID instrument for astronomy at near infrared, optical and ultraviolet wavelength. We use MIKDs as single photon detectors by measuring the arrival time of incoming photons with an accuracy of a few microseconds and with a relatively high energy resolution (R~10 at 1um).
Grégoire Coiffard +4 more
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Mazin Lab at UCSB is developing MKID instrument for astronomy at near infrared, optical and ultraviolet wavelength. We use MIKDs as single photon detectors by measuring the arrival time of incoming photons with an accuracy of a few microseconds and with a relatively high energy resolution (R~10 at 1um).
Grégoire Coiffard +4 more
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GNOSIS: An OH suppressing near-infrared spectrograph for astronomy using fibre Bragg gratings
2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC), 2011Astronomical near-infrared spectroscopy is made difficult by the extremely bright and variable night sky background. The night sky surface brightness is more than a thousand times brighter at 1.6µm than at 0.4µm. Furthermore the brightness of the sky changes by factors of ∼10% on time-scales of minutes. Background-subtraction is therefore frustrated by
J. S. Lawrence +17 more
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Near-infrared Instrumentation For Rapid-response Astronomy
2016Ɣ-ray bursts (GRBs) are the Universe's most luminous transient events. Since the discovery of GRBs was announced in 1973, efforts have been ongoing to obtain data over a broader range of the electromagnetic spectrum at the earliest possible times following the initial detection. The discovery of the theorized ``afterglow'' emission in radio through X-
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A discussion on infared astronomy - Near infrared night sky background
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1969We have carried out near infrared observations on wide fields of the sky, using both a rocket-borne telescope and ground-based equipment. The rocket observations covered the spectral range of 1 to 8 μm. The ground-based observations were carried out in a narrow spectral region around 1.085 μm.
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A discussion on infared astronomy - Near infrared photometry of late-type stars
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1969A multi-band photoelectric photometer for observations in the ultraviolet, blue and visible and the infrared bands W (1.06μm), X (1.13 μm, Y (1.63 μm) and Z (2.21 μm) has been constructed and applied to both stellar and planetary observations ...
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Journal of the Optical Society of America A, 1996
Using the results of photometry applied to speckle image reconstructions of the triple stellar system LHS1070 in the near infrared, we compare quantitatively the performance of shift-and-add and bispectrum image reconstruction methods and find that comparable results can be obtained.
V. A. Klückers +3 more
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Using the results of photometry applied to speckle image reconstructions of the triple stellar system LHS1070 in the near infrared, we compare quantitatively the performance of shift-and-add and bispectrum image reconstruction methods and find that comparable results can be obtained.
V. A. Klückers +3 more
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Optical Engineering, 2013
LINC-NIRVANA (LN) is the near-infrared, Fizeau-type imaging interferometer for the large binocular telescope (LBT) on Mt. Graham, Arizona (elevation of 3267 m). The instrument is currently being built by a consortium of German and Italian institutes under the leadership of the Max Planck Institute for Astronomy in Heidelberg, Germany.
Ralph Hofferbert +67 more
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LINC-NIRVANA (LN) is the near-infrared, Fizeau-type imaging interferometer for the large binocular telescope (LBT) on Mt. Graham, Arizona (elevation of 3267 m). The instrument is currently being built by a consortium of German and Italian institutes under the leadership of the Max Planck Institute for Astronomy in Heidelberg, Germany.
Ralph Hofferbert +67 more
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Signal Recovery and Synthesis, 1995
It is well known that atmospheric turbulence limits the resolution available to ground based astronomical observations to 0.5-1.0 arcseconds in the infrared. The advent of speckle interferometry in the 1970’s [1] has allowed the recovery of diffraction limited Fourier modulus information of astronomical objects of interest to be attempted routinely.
V.A. Klückers +2 more
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It is well known that atmospheric turbulence limits the resolution available to ground based astronomical observations to 0.5-1.0 arcseconds in the infrared. The advent of speckle interferometry in the 1970’s [1] has allowed the recovery of diffraction limited Fourier modulus information of astronomical objects of interest to be attempted routinely.
V.A. Klückers +2 more
openaire +1 more source