Dear all, 

I have a question regarding a ZEMAX model of a segmented telescope, which I’ve set up using non-sequential components.

The issue arises with the DENC and GENC operands, which return incorrect values when I introduce disturbances to the segments. Specifically, the encircled energy value I observe in the plot differs from what GENC and DENC report after I apply any clocking or decentering adjustments to a segment. However, in the nominal model—where no disturbances are applied to the segments—the GENC and DENC values are accurate.