Home » Solar Instruments » NSO/SOLIS Integrated Sunlight Spectrometer
NSO/SOLIS Integrated Sunlight Spectrometer
STATUS
Data Archive/facility
AVAILABILITY
Via web at http://solis.nso.edu/iss/
REQUEST PROCEDURE
Publically accessible via web with data files available as ftp downloads. A login is not required nor is a user account required to download data from the SOLIS/ISS.
Solar Instruments
Daily measures of spatially integrated solar spectral line relative intensity at high spectral resolution in selected chromospheric and photospheric spectral features.
CONTACT
Carl Henney (chenney@noao.edu)
National Solar Observatory
950 N. Cherry Ave. POB 26732 Tucson AZ 85726-6732
520-318-8514
chenney@noao.edu
http://solis.nso.edu/ISSOverview.html
SPECIFICATIONS
Spectral Range350 nm -- 1100 nm
Spectral ResolutionR = 300,000 and R = 30,000
Spatial Coverage and Resolutionspatially integrated full-disk of Sun
Temporal Resolution< 1-minute per line; daily observations
Data AccuracyS/N > 5000
Data Precision0.1%
Physical ObservablesSpectral line relative intensities, line shapes, and line positions.
Derived OutputsIntensities, Irradiance, spectral line bisectors, doppler shifts.
Concurrence OpportunitiesContact NSO for PI programs.
Expected Lifetime25 years
Location or OrbitNSO/Kitt Peak
Capability SummaryR=300,000, high S/N ratio line profiles of selected features in the solar spectrum seen as a star.
SchedulingDaily data available weather permitting
Archival Datasee vso.nso.edu
Number of Users
Planned UpgradesInstalling a iodide cell for high precision measurements of doppler shifts.
Sub-InstrumentsExtinction monitor.
Data ProductsSpectra at selected wavelengths obtained daily (weather and instrument status permitting).
University FacilityYes
National Ground BasedYes
SatelliteNo
Virtual ArchiveNo
REFERENCES
http://solis.nso.edu/ISSOverview.html
REMARKS
The SOLIS Integrated Sunlight Spectrometer (ISS) is one of the suite of three SOLIS facility instruments on Kitt Peak that are obtaining high precision synoptic observations of the Sun. The ISS basically consists of an 8-mm fiber that feeds a bench-mounted spectrograph for high spectral resolution observations of the Sun as a star in selected key chromospheric and photospheric spectral lines in the visible spectrum.
UPDATED ON
13 Nov 2009 10:52