Period 04: Looking for assistance with box size for "Calculate Noise At Frequency"

American Association of Variable Star Observers (AAVSO)
Tue, 09/23/2014 - 20:08

I am working on an EHB fast pulsator project and am using calculate noise at frequency to get an estimate of SNR for various frequencies that show up as having the largest amplitudes.  The instructions give no direction as appropriate setting for Box size. Does anyone know what the criteria are?


The box is centered on the frequency of interest for which you are trying to determine the background noise in a surrounding region of the spectrum. I would think that you don't want the box to take you above the Nyquist frequency or into negative frequencies, whichever occurs first, but that is just a guess and I have no idea what additional factors might limit the box size. 

If there are any Period 04 experts out there I would be happy to have some guidance. 


Brad Walter, WBY