كرة نقل F/5.4 - 6 بوصة - 1/10 موجة، PV.

The 1/10 wave PV spec is no joke—fringe contrast came out noticeably cleaner than my old sphere, and the 6-inch aperture covers my test parts without vignetting. Setup took a bit of care to align, but once it’s in, the wavefront error is remarkably stable across the full pupil.

The 1/10 wave PV spec is exactly what my lab needed for interferometric testing, and the 6-inch aperture sits perfectly in our setup. Surface quality came out of the box clean and I saw no fringing artifacts on the first pass.

I was hoping the 1/10 wave PV would give me cleaner interferograms, but the coating quality seems average for the price. Works fine for basic setups, though I noticed some subtle artifacts at the edges.