Lowest mag for seeing grs

Hi,
Just for fun! What was the lowest power in which you saw the grs in a refractor less than 105mm. Apo or Achro.
I saw it at 90x clearly with atmospheric turbulance. I will try at 75x tonight.
Clear skies

Hi,
Just for fun! What was the lowest power in which you saw the grs in a refractor less than 105mm. Apo or Achro.
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Just as a point of reference, I was able to see it the other night in my 12.5 inch F4.06 at 52x... Anything lower and the astigmatism in my observing eye was showing itself.

Jon