He mentions one study and says it is mostly photochemical but thermal injury can occur and he seems to talking about glimpses without protection. He definitely does not advocate looking without protection and no eye doctor would as well. He seems to advocate protected sex as well. The study should also follow-up these individuals in 20 years to really see what the radiation exposure has done. I recall it was you saying 40 sec exposure would not do permanent damage, I did not hear Dr. Chou say that. Go to this site and watch the video. It is a presentation by Dr. Ralph
Chou. Dr. Chou is a noted expert on eye safety and viewing the sun. He has written at least two articles for Sky and Telescope that I am aware of. There are some really good facts on this site: http://www.transitofvenus.org/june2012/eye-safety
From: David Bennett <dlbennett@mac.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Wednesday, May 23, 2012 9:43 AM Subject: Re: [Utah-astronomy] safe observing
Wow, 40 seconds? Where did you read that one? Sounds very risky even during the maximum of an annular (don't call me annual) eclipse. I glimpsed for about 1/4 a second unprotected during the maximum from Salt Lake with the hopes of seeing an after-image with closed eyes...it barely worked but I wouldn't risk my sight doing any more.
On May 23, 2012, at 09:08 AM, erikhansen@thebluezone.net wrote:
With a few posts talking about exaggerated claims of the dangers of solar observing during an eclipse.
Did anyone try to glimpse the eclipse without eye protection? After all, it was said to can look for 40 seconds without permanent eye damage.
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