inaoe.edu.mx
 

 Gratings available

 

Gratings details:

Lines/mm 

Blaze wavelenght(Å) 

Resolution

(Å/pixel)

Order Sensitivity Curve 
150 5000 3.2 1 Sens
300 5000 1.6 1  
300 7500 1.6 1  
600 7500 0.8 1  
830 8000 0.3 2  

The dispersion angle is obtained from the wavelength (lambda) in Å, the dispersion order (m) and the lines/mm of the grating (r) as:

The resolution is then given as:

with F = effective focal length of the spectrograph, which for the Cananea Boller & CHivens is equal to 465mm. Here is a web program which calculates dispersion angle and spectral resolution using the above formulae.


Last Update:
26-11-2008 a las 18:20 by

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