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SOHO/MDI
STATUS
PI Instrument And Archive
AVAILABILITY
Launched 2 Dec 1995, Regular operations from May 1996 to present. 3-month Gap in 1998. All data is available.
REQUEST PROCEDURE
http://sohowww.nascom.nasa.gov/data/data.html for partial collection or http://soi.stanford.edu/data for full access.
Solar Instruments
Michelson Doppler Imager
CONTACT
Philip Scherrer
Stanford U.
N/A
650-723-1504
pscherrer@solar.stanford.edu
http://sun.stanford.edu
SPECIFICATIONS
Spectral Range676.8nm
Spectral Resolution80mA
Spatial Coverage and ResolutionFull disk, 1024x1024
Temporal Resolution1 minute
Data Accuracydifferent for each product
Data Precisiondifferent for each product
Physical Observablesline-of-sight velocity, line-of-sight magnetic fieldContinuum intensity
Derived Outputsmultiple. See data export pages.
Concurrence OpportunitiesLimited by DSN availability for continuous campaigns. Organized as SOHO Joint Observing Programs.
Expected LifetimeLaunch of SDO/HMI+1 yr.
Location or OrbitL1
Capability SummaryContinuous 1-minute medium-l Dopplergrams, 20-arc-sec resolution,60day campaigns each year of full resolution Dopplergrams (4-arc sec),15 full res magnetograms per day,Campaigns of higher resolution various quantities.
SchedulingCampaigns scheduled via SOHO planning.
Archival Data~80TB archived at Stanford available online
Number of Users> 500
Planned UpgradesWill be replaced by SDO/HMI
Sub-InstrumentsMDI data analysis and archive facility
Data ProductsWhite light proxy images, magnetograms, dopplergrams
University FacilityYes
National Ground BasedNo
SatelliteYes
Virtual ArchiveYes
REFERENCES
See summary at: http://soi.stanford.edu/sssc/doc/MDI_data_access.html
REMARKS
Observations will stop on about 12 April 2011
UPDATED ON
6 Apr 2011 11:08