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Old December 24th 18, 01:38 AM posted to sci.astro.amateur
hleopold
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Default Let's Photograph Comet 46P Wirtanen

On Dec 23, 2018, Paul Schlyter wrote
(in et):

On Sat, 22 Dec 2018 20:09:17 -0500, wrote:
My corrected vision in my left eye is 20/25, i.e., very good.


That's the same as 0.8 right? And full visual acuity would then be
25/25? Or 100/100 etc if you prefer that. Or just 1.0


20/20 is, as I understand it, “perfect” vision. Mine is 20/400 in the
right eye uncorrected, corrected to 20/15. left is somewhat worse, but
corrected to 20/15 also. Or it used to be, these days I am probably more
20/20 or slightly worse. Plus they have to correct for the bad astigmatism I
have in both eyes.

--
Harry F. Leopold
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