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    Re: Looking at the Sun
    From: Hewitt Schlereth
    Date: 2009 Jun 20, 11:06 -0400

    Whenever I happened to be on deck at sunrise or set I used to note the
    time.. As the sun touched the horizon it looked like a squshed tomato
    which always made me smile.  Later I'd figure a horizon sight
    Never took the time when the upper edge appeared or disappeared, so
    never saw the green flash. Now that I'm in the tropics (18N) I may
    Also never felt the inclination to look away,, though I often looked
    through the tube made by my partially closed fist. I'm glad to hear I
    probably wasn't being foolish.
    On 6/20/09, Ken Muldrew  wrote:
    > From:
    > > Just as a general un-scientific survey, how many of you have caught a
    > > quick glimpse of the Sun through a sextant telescope? How long did it
    > > take for the spots to go away.
    > I've seen a couple of flashes through the 5x scope on my sextant. The spots
    > probably lasted a minute or two, I don't remember well enough to guess
    > better than that. There was no later pain due to these brief glimpses. My
    > sextant has a sunshade in front of the telescope and even though it's
    > painted black, I can't count the number of times I've seen the sun reflected
    > of this shade and thought (just for a second) that I had gotten the full sun
    > through the scope.
    > I have had snow blindness a few times and a couple of welder's flashes (only
    > one of which resulted in pain). I don't think you will do any harm to your
    > eyes without knowing about it. It really does hurt like the devil (it feels
    > like you have sand under your eyelids). So the fellow who was worried about
    > his 90 year old shades is quite safe if he has been using them for some time
    > without effect. It's really just the first time you use your shades that you
    > take some risk.
    > Like Frank, I have stared at the setting sun many times. The rule of thumb
    > is that if it's bright enough to make you want to look away, then look away.
    > Ken Muldrew.
    >  >
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