Hi Yonatan,

It looks like the header data for the Huygens PSF never got hooked up in the API and there is no way to get this data directly from the API.  You can use the PSF_Results.GetTextFile(filename) to save the text results and manually parse the header data. 

Also, you could use the Merit Function Editor with CEHX/CEHY to get the Centroid coordinates (this is slightly different than the Center coordinates but might be easier to use).  If you want the CEHX/CEHY, you can either insert these into the MFE (which would provide quicker evaluation) or you can use TheSystem.MFE.GetOperandValue() method.