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.
High Resolution Measurements of OH Infrared Airglow Structure
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.
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.
High-Resolution Measurement of OH Infrared Airglow Structure
Author: Parris Cornel Neal
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
Book Description
A bright OH Meinel airglow structure event was recorded on June 15, 1983 from Sacramento Peak, New Mexico. The MAPSTAR interferometer was operated in conjunction with low-light-level infrared imaging isocon camera system provided by the University of Southampton, England. The camera was co-aligned with the meter. The structures were measured at elevation angles near the horizon. Apparent wavelength, periods and phase velocities of 24 + or - 1 minutes, and 28 + or - 2 meters/second respectively, were calculated for the recorded structure. The interferometer data show intensity modulations of 20-40 percent within the structure. A mean rotational temperature of 165 degrees Kelvin was calculated using the interferometer spectral data and temperature modulations of 5 to 10 degrees Kelvin were recorded in phase with the intensity modulations. This report discusses the structure and performance of the MAPSTAR interferometer and telescope, as well as the results obtained using the sensor. Data collected shed new light on the phenomena under investigation and will provide a foundation for studies in the future.
Publisher:
ISBN:
Category :
Languages : en
Pages : 224
Book Description
A bright OH Meinel airglow structure event was recorded on June 15, 1983 from Sacramento Peak, New Mexico. The MAPSTAR interferometer was operated in conjunction with low-light-level infrared imaging isocon camera system provided by the University of Southampton, England. The camera was co-aligned with the meter. The structures were measured at elevation angles near the horizon. Apparent wavelength, periods and phase velocities of 24 + or - 1 minutes, and 28 + or - 2 meters/second respectively, were calculated for the recorded structure. The interferometer data show intensity modulations of 20-40 percent within the structure. A mean rotational temperature of 165 degrees Kelvin was calculated using the interferometer spectral data and temperature modulations of 5 to 10 degrees Kelvin were recorded in phase with the intensity modulations. This report discusses the structure and performance of the MAPSTAR interferometer and telescope, as well as the results obtained using the sensor. Data collected shed new light on the phenomena under investigation and will provide a foundation for studies in the future.
An Investigation of the Causes of Optical and Infrared Airglow Structures in the Mesosphere
Author: Edmond M. Dewan
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 102
Book Description
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 102
Book Description
Scientific and Technical Aerospace Reports
Discovery
Author: United States Air Force Academy
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 172
Book Description
Publisher:
ISBN:
Category : Aeronautics, Military
Languages : en
Pages : 172
Book Description
Technical Reports Awareness Circular : TRAC.
Energy Research Abstracts
Environmental Research Papers
Author:
Publisher:
ISBN:
Category : Environmental geology
Languages : en
Pages : 108
Book Description
Publisher:
ISBN:
Category : Environmental geology
Languages : en
Pages : 108
Book Description
Instrumentation for Infrared Airglow Clutter
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.
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.
Spectral Imaging of the Atmosphere
Author: G. G. Shepherd
Publisher: Academic Press
ISBN: 9780126394818
Category : Medical
Languages : en
Pages : 358
Book Description
Traces the historical development of both spectral and imaging methods, placing them in a unified framework relevant to observations of the troposphere, stratosphere, mesosphere, and thermosphere.
Publisher: Academic Press
ISBN: 9780126394818
Category : Medical
Languages : en
Pages : 358
Book Description
Traces the historical development of both spectral and imaging methods, placing them in a unified framework relevant to observations of the troposphere, stratosphere, mesosphere, and thermosphere.