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RE: (meteorobs) Re: Florida Geminids very iffy+vision
About Limiting Magnitude, Norman McLeod recently wrote:
>Too much altitude affects eyes adversely due to oxygen starvation. Above
>6000 feet I see less than in Florida. Some time ago Joe mentioned seeing a
>great sky over the Grand Canyon. I was there in 1974 June and saw a rather
>bright, unimpressive sky despite clear weather -- LM 6.5 was all I could
>get. From Rocky Mountain Natl Park at 8000 feet the sky was uniformly
>bright and also with a 6.5 limit.
I guess lack of Oxygen affects unacclimated observers differently. My best
limiting magnitude is always from mountain skies, where I have seen to 7.5
magnitude, but can't do better than 6.5 at sea level. I wonder why this is?
GWG
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