Soft X-Ray Polychromator
Investigation of those aspects of solar activity that lead to the production of plasma temperatures in the 1.5 to 50 million degree range
Assemblage of two instruments: 1) BCS (Bent-Crystal Spectrometer), to obtain spectra in the range 2-3 Å, at a resolving power λ/Δλ of about 10,000 with eight position-sensitive proportional counters; and 2) FCS (Flat-Crystal Spectrometer), able to rotate its crystals to provide its seven detectors with access to the spectral range 1.40-22.43 Å.
Sun pointing from a low-inclination LEO. BCS with imaging capability by a collimator field of view of 6 arcsec
BCS: 4400 km at Sun surface
Coverage / Cycle
FCS: full solar disk, BCS: selected areas; at 10 s intervals
Flown on an R&D satellite
1980 to 1989-11-24
Satellites this instrument is flying on
Note: a red tag indicates satellites no longer operational, a
green tag indicates operational satellites, a blue tag indicates
Solar and space environment monitors Solar activity monitor
No WIGOS subcomponents have been defined.
Tentative Evaluation of Measurements
The following list indicates which measurements can
retrieved from this category of instrument. To see a full Gap Analysis by Variable,
click on the respective variable.
Note: table can be sorted by clicking on the column headers
Variable Relevance for measuring this variable Operational limitations Explanation
Solar X-ray flux spectrum 2 - very high No specific limitation. High spectral resolution, moderate dynamic range
Solar X-ray image 2 - very high No specific limitation. Spectrometry with coarse spatial resolution