Possible small issue with annular zernike

[atsju]

Yordan's Claude located a probable issue. To be double checked and fixed (or issue closed).

https://groups.io/g/Interferometry/topic/120445267
https://groups.io/g/Interferometry/topic/120669543

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When computing eps (the central-obstruction fraction) for the annular Zernike fit, the code divided by the full diameter instead of by the reduced (Reduce Aperture) aperture that the fit is actually applied over."
"m_annularObsPercent (annular obstruction fraction) was computed as annularDiameter / diameter, using the full mirror diameter as the denominator. But the annular Zernike fit itself is normalized to the reduced aperture (m_clearAperature, set via Reduce Aperture), not the full diameter — so the eps fed into the fit didn't match the aperture the fit was actually running on.

[githubdoe]

Yes sounds like a bug. Probably never tested against. Many do not use the clear aperture and we forgot to try it I bet.