Results 271 to 280 of about 614,140 (290)
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Image Detectors for Recording Astronomical Ultraviolet Spectra
1975Various image tube devices have been evaluated as possible detectors for astronomical spectroscopic studies. An electrostatic image intensifier coupled by fibre-optics to photographic film has been used to record echelle format spectra. Ultraviolet sensitivity is obtained by coating the detector faceplate with a fluorescent layer.
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A solid state detector head for astronomical applications
2010A detector head for housing self scanned silicon photo-detector arrays has been constructed for use in astronomy. It employs a unique frozen methanol cooling-"system and, although built specifically for the linear Reticon devices, it is capable of housing other linear or two dimensional monolithic arrays.
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Application of New Ultraviolet Television Detectors in an Astronomical Satellite
1972Publisher Summary This chapter presents the application of ultraviolet television detectors in an astronomical satellite. The scientific purpose of small astronomical satellite-D (SAS-D) is the spectroscopic study of a wide range of astronomical sources in the spectral region between 115 and 320 nm.
C.C. Sturgell +6 more
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The New γ-CFAR Detector For Astronomical Image Processing
1997In this paper, we propose a new constant false alarm rate (CFAR) detector based on a family of gamma kernels which provide the ability to change the scale and shape of a stencil that models the local area in an image. This new detector is called the CFAR detector. The scale and shape can be selected adaptively after training in such a way so as to give
A. D. Nair +2 more
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Estimation of detector response in optical astronomical radiometry
Applied Optics, 1987W, Blitzstein +2 more
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Performance of infrared detectors applied in astronomical telescopes
Earth and Space: From Infrared to Terahertz (ESIT 2022), 2023Xiang yong sheng +6 more
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Construction and operation of a cloud detector to assist astronomical observations
2003The Solar Tower Atmospheric Cherenkov Effect Experiment (STACEE) is a ground based gamma ray telescope which studies active galatic nuclei (AGNs). As a ground based experiment, data quality is directly related to atmospheric conditions. This thesis describes the process of verifying the reliability of astronomical weather predictions made by the ...
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Investigation of a resistive anode detector for astronomical spectroscopy
1986A large format two dimensional photon counting detector has been evaluated as a detector for astronomical spectroscopy. The design comprises an 320 photocathode, a tandem MCP gain stage and a circular arc terminated resisitive anode to provide pOSitional coordinates of detected events.
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