Content

Introduction

The tables below provide an optical model of the line spread functions (LSF) and cross-dispersion spread function (CDSF) for COS at various wavelengths, cenwaves, and for different Lifetime Positions. LSFs give the detailed distribution of light along the primary dispersion axis, while CDSFs describe the distribution of light in the cross-dispersion axis.

For more information on COS spectral resolution see section 5.1.4 of the COS IHB, COS ISR 2009-01 and COS ISR 2011-01.

FUV Lifetime Position = 1

Tabulated Theoretical Line Spread Functions

G130M G160M G140L
1222 1577 1105
1291 1589 1230
1300 1600 1280
1309 1611  
1318 1623  
1327    

Tabulated Theoretical Cross-Dispersion Spread Functions

G130M G160M G140L
1222 1577 1105
1291 1589 1230
1300 1600 1280
1309 1611  
1318 1623  
1327    

FUV Lifetime Position = 2

Tabulated Theoretical Line Spread Functions

G130M G160M G140L
1055 1577 1105
1096 1589 1280
1222 1600  
1291 1611  
1300 1623  
1309    
1318    
1327    

 

Tabulated Theoretical Cross-Dispersion Spread Functions

G130M G160M G140L
1055 1577 1105
1096 1589 1280
1222 1600  
1291 1611  
1300 1623  
1309    
1318    
1327    

FUV Lifetime Position = 3

Tabulated Theoretical Line Spread Functions

G130M G160M G140L
1222 1577 1105
1291 1589 1280
1300 1600  
1309 1611  
1318 1623  
1327    

Tabulated Theoretical Cross-Dispersion Spread Functions

G130M G160M G140L
1222 1577 1105
1291 1589 1280
1300 1600  
1309 1611  
1318 1623  
1327    

FUV Lifetime Position = 4

 Tabulated Theoretical Line Spread Functions

G130M G160M G140L
1222 1577 1105
1291 1589 1280
1300 1600  
1309 1611  
1318 1623  
1327    

Tabulated Theoretical Cross-Dispersion Spread Functions

G130M G160M G140L
1222 1577 1105
1291 1589 1280
1300 1600  
1309 1611  
1318 1623  
1327    

NUV

NUV
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LAST UPDATED: 06/17/2019

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