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Author: Ernest Ray Huppi Publisher: ISBN: Category : Airglow Languages : en Pages : 36
Book Description
Two systems designed to enable the spectral measurement of the airglow in the 2 to 4 micron region have been developed. Both systems are designed for use in high-altitude aircraft. This eliminates the problem of strong thermal emission of the lower atmosphere which is encountered when making airglow measurements in the 2 to 4 micron region from the ground. In the first system the entire measurement apparatus, including the interferometer-spectrometer, is cooled in order to eliminate unwanted thermal emission. The second system incorporates the use of a cold chopper mounted outside the aircraft. This technique allows the interferometer-spectrometer to be maintained at normal temperatures.
Author: Ernest Ray Huppi Publisher: ISBN: Category : Airglow Languages : en Pages : 36
Book Description
Two systems designed to enable the spectral measurement of the airglow in the 2 to 4 micron region have been developed. Both systems are designed for use in high-altitude aircraft. This eliminates the problem of strong thermal emission of the lower atmosphere which is encountered when making airglow measurements in the 2 to 4 micron region from the ground. In the first system the entire measurement apparatus, including the interferometer-spectrometer, is cooled in order to eliminate unwanted thermal emission. The second system incorporates the use of a cold chopper mounted outside the aircraft. This technique allows the interferometer-spectrometer to be maintained at normal temperatures.
Author: James C. Ulwick Publisher: ISBN: Category : Languages : en Pages : 31
Book Description
Two measurements systems have been completed to provide the capability to make high resolution spatial and temporal measurements of infrared structures of the aurora & airglow. The two systems are: 1) GAZER (Graphics Aided Zonal Energy Recorder) - a low light level, wide angle TV imaging and recording system with the capability of storing information regarding absolute intensity levels of the image for subsequent recall and analysis; and 2) Scanning IR Radiometer - a microprocessor controlled tracking mount which drives an IR radiometer through programmable repeatable scan patterns to provide sky maps of the temporal and space small and large scale inhomogeneities.
Author: Parris Cornel Neal Publisher: ISBN: Category : Airglow Languages : en Pages : 534
Book Description
Disturbances in the normally calm atmosheric airglow layer, which cause bright and dark bands or stripes to appear, have been observed. These disturbances are attributed to gravity waves propagating through the atmosphere. An instrument capable of resolving the temporal, spatial, and spectral attributes of OH infrared emissions was designed to gather quantitative data on airglow structure. An optically compensated interferometer spectrometer was chosen as the basic instrument to measure this phenomenon. Spatial data were obtained by matching the interferometer's high throughput to a unique optical system which includes a 50-cm diameter telescope. This Dall Kirkham telescope maintains the large throughput of the interferometer but narrows the instrument field of view to less than a degree. The spatial resolution of the system is 14 milliradians. A bright OH Meinel airglow structure event was recorded. The structures were measured at elevation angles near the horizon. Apparent wavelengths, periods, and phase velocities, of 24 + or -1 km, 14 + or -1 minutes, and 28 + or -2 meters/second respectively, were calculated for the recorded structure.
Author: E. Ray Huppi Publisher: ISBN: Category : Auroras Languages : en Pages : 96
Book Description
Infrared auroral backgrounds in the 3 micron region were measured with a filtered radiometer from a KC-135 aircraft. The measurements of temporal and spatial variations in the infrared were compared with simultaneous measurements of 3914A and 5577A visible radiation. Auroral measurements were obtained during dark and sunlit conditions. Frequency analysis shows the 3 micron and 5577A to be delayed and filtered relative to the prompt 3914A N2(+) emission. The ratio of 3 micron to 3914A emission varies by about a factor of 3 and appears to be a function of peak electron deposition altitude.
Author: Ernest Ray Huppi
Author: Ernest Ray Huppi
Author: James C. Ulwick
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Author: Parris Cornel Neal
Author: 
Author: Valerʹi͡an Ivanovich Krasovskiĭ
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Author: Douglas P. McNutt
Author: E. Ray Huppi
Author: Alv Egeland