AO Mode: 


Observing wavelength: 
band (λref):
λref:
nm

The numeric results will refer to λref and the wavelength range of the graphs will be centered there. 
Radius of circular S/N ref. area:
.i.e. over which the S/N is calculated.

mas (on the sky) 
DLC=1.22 λ/D is the radius of the diffraction limited PSF core for a D=42m telescope. 
Number of spectra on the detector:

i.e. number of spatial elements (spaxel) in the S/N ref. area

Spectral resolution R=λ/Δλ: 
IMPORTANT: please consult the documentation when using R>100,000
