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National Solar Observatory/GONG Network
STATUS
Data Archive/facility
AVAILABILITY
GONG.NSO.EDU
REQUEST PROCEDURE
http://gong.nso.edu/
Solar Instruments
The Global Oscillation Network Group (GONG) is a community-based program to conduct a detailed study of solar internal structure and dynamics using helioseismology. In order to exploit this new technique, GONG has developed a six-station network of extremely sensitive, and stable velocity imagers located around the Earth to obtain nearly continuous observations of the Sun's "five-minute" oscillations, or pulsations.
CONTACT
Frank Hill
National Solar Observatory
950 N. Cherry Ave. Tucson, AZ 85719
520/318-8138
fhill@nso.edu
gong.nso.edu
SPECIFICATIONS
Spectral RangeNi I 6768 A
Spectral Resolution
Spatial Coverage and ResolutionFull-disk
Temporal Resolution1 minute
Data Accuracy
Data Precision1 m/s /pixel/min Doppler, 3G/pixel/min magnetic
Physical ObservablesDoppler velocity, LOS magnetic field, intensity
Derived OutputsHelioseismic mode parmeters, subsurfcae flows, potential magnetic field source surface extrapolations
Concurrence Opportunities
Expected LifetimeIndefinite
Location or OrbitGeographically distributed
Capability SummaryContinual coverage of solar Doppler and LOS magnetic fields
SchedulingNone
Archival DataAll data from start of operations in 1995 are available
Number of Users150
Planned UpgradesAddition of H-alpha instrument in 2010.
Sub-InstrumentsThe six sites comprising the GONG Network are: * The Big Bear Solar Observatory in California, USA. * The High Altitude Observatory at Mauna Loa in Hawaii, USA. * The Learmonth Solar Observatory in Western Australia. * The Udaipur Solar Observatory in India. * The Observatorio del Teide in the Canary Islands. * The Cerro Tololo Interamerican Observatory in Chile.
Data Productshttp://gong.nso.edu/data/ Helioseismology Products • Time Series • Mode Frequencies • Rings / Local Products Near-Real-Time Data Products • Magnetograms & Intensity ° Archives • Synoptic Maps • Potential-Field Source-Surface Models Farside Imaging
University FacilityYes
National Ground BasedYes
SatelliteNo
Virtual ArchiveYes
UPDATED ON
17 Nov 2009 11:16