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|5000 - SPF - South Pole Fabry-Perot Interfer Spectr|
Instrument Type: Instrument > OpticalInstrument > Interferometer > FabryPerot
Observation Site: SPF - South Pole Fabry-Perot Interfer Spectrom
Instrument Page: SPFDescription:
The Fabry-Perot Interferometric Spectrometer at Amundsen-Scott South Pole Station (90.00S) has been operated since 1989 by the Department of Earth and Space Sciences, University of Washington, in cooperation with the Geophysical Institute of the University of Alaska. The instrument is located within 150 feet of the South Pole at 2835 m above mean sea level. The geographic longitude is used to reckon the azimuthal direction of observation, with 0 E corresponding to 0 deg azimuth. The apex magnetic coordinates of South Pole at 250 km height in 1992 were (-74.4, 17.7), with a magnetic declination of -21.37 deg (or 158.63 E toward the compass south pole), an inclination of -74.78 deg, and 0 UT at 2039 MLT. The invariant (apex) South Pole at 250 km height was at (74.2S, 126.0E), and the perpendicular to the magnetic latitude circle pointed to 125.6E. Hernandez et al (1991) used magnetic south towards 120 E, with 0 UT at 2023 MLT. The magnetic grid is useful for ordering the red line observations at about 250 km height, but not for other observations from emissions below 100 km height.