The following algorithm may be used to compute the SNR to be expected for a source with a given flux density:
Determine the detector reset time 
required to achieve the
desired SNR:
a) Convert the expected flux density at the desired wavelength
to a detector signal 
(
V/s), using the spectral response curves
shown in
Fig. 
(p. ) to
Fig. (p. ).
b) Compute the expected SNR per resolution element, starting with
the minimum detector reset time of 
sec, using the formula
where 
stands for the number of integrations per
resolution element as given in Tab. , and taking the
noise parameters 
from
Tab. (p. ).
If the expected SNR is less than requested, repeat the
computation of the expected 
with the maximum detector reset
time of 
sec, as indicated in Tab. .