Hi Ric
In terms of scintillation due to seeing, I have noticed that in poor seeing, the centre bar of the original Bahtinov Mask can appear to “wander” or “oscillate” around the judged focus point. Also, when using my Pentaz XW14, as I move my eye around the field, the centre bar moves (very slightly) with it. I suspect the same phenomena would occur with the Carey variant?
Cheers
Dennis
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