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Polarization gratings for visible and near-infrared astronomy
SPIE Proceedings, 2014We report on the development of polarization gratings that can be used for polarimetry and/or high throughput broadband spectroscopy in astronomy. Polarization gratings are able to overcome fundamental limitations on the diffraction efficiency of conventional gratings to provide near 100% diffraction efficiency over a broad bandwidth.
Max Millar-Blanchaer +3 more
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Limitations of ground based near and far infrared astronomy
Infrared Physics, 1975Abstract The possibilities of ground based infrared astronomy are discussed. It is shown that telescopes used up to now are not optimized and that the Diffraction Limited Detectivity conditions (DLD) cannot be reached, in the near infrared, by the larger telescopes. The maximum useful diameters for near i.r. and far i.r.
G. Dall'Oglio +4 more
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DMDs for multi-object near-infrared spectrographs in astronomy
Emerging Digital Micromirror Device Based Systems and Applications X, 2018The Digital Micromirror Device (DMD), typically used in projection screen technology, has utility in instrumentation for astronomy as a digitally programmable slit in a spectrograph. When placed at an imaging focal plane the device can be used to selectively direct light from astronomical targets into the optical path of a spectrograph, while at the ...
Aidan Gray +6 more
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First experiences with a solid ZnSe grism for near infrared astronomy
Experimental Astronomy, 1994We present engineering data and initial astronomical observations with the solid ZnSe grisms mounted in the MPIA MAGIC infrared camera.
T. M. Herbst, J. T. Rayner
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The SAPHIRA detector: a near-infrared photon counter for astronomy
Advanced Photon Counting Techniques XIII, 2019The SAPHIRA is currently the only astronomical device capable of counting photons in the NIR while showing other performance easily comparable to the ubiquitous HAWAII arrays. Photon counting was previously only available in astronomy with high dark currents, prohibiting observation of many astronomical targets.
Dani E. Atkinson +3 more
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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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