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Introduction
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Design
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M-Factors

DESIGN AND TECHNICAL DATA
 

SCIAMACHY optical arrangement (picture courtesy by TPD-TNO, click to enlarge)



 
UV-Vis-NIR High Resolution Imaging Double Spectrometer
passive hyperspectral UV-VIS-NIR sensor
high straylight suppression
moderately high spectral resolution
high spectral stability
high radiometric accuracy
high dynamic range (7 - 8 orders of magnitude)
moderate spatial resolution
3 different measurement modes for atmospheric measurements


 
Scanner Unit    
Number of axis: 
Angular resolution:  2.5 arcsec 


 
Telescope   
Aperture Diameter  31 mm  


 
Spectrometer    
Entrance slit, size:  0.190 mm x 9.6 mm  
Instantaneous field of view size:   0.045 deg x 1.8 deg  
Sun aperture size:   0.06 mm x 3 mm  
Sun aperture instantaneous field of view size:   0.045 deg x 0.72 deg 


 
Thermal Control   
Optical bench nominal temperature:  253 K  
Optical bench orbital temperature variation:  0.25 K 
Detector Temperature:   150 K - 235 K  
Detector array orbital temperature variation:  0.02 K 


 
In-Flight Calibration H/W    
On-Board Diffuser:   aluminium reflection diffuser 
Spectral line source:   Hollow cathode discharge lamp, Pt/Cr cathode with Ne filling  
White light source:   Tungsten-Halogen 5 Watts lamp with equivalent blackbody temperature of 3000 K.  


 
Measurement Data    
Data Processing:   Coadding Mode  
Nominal Data Rate: [bit/sec]   400.000  
High Data Rate: [bit/sec]  1.867.000  
Absolute Datation Accuracy [ms]   10  
Relative Datation Accuracy [ms] 


 
Budgets   
Mass (Budget):[kg]  198 
Power(Budget): [W]  122