Saw the sun spots...

[Arvon]

that caused the solar flare. Oh don't worry! I have some special 'glasses' that were in a copy of Astronomy for looking at eclipses. The spots were large enough to see without magnification. Don't do this without proper equipment. And don't rely on welding glasses. For the most part they are too bright for solar viewing.

[Lady Blue03]

Yea, my astronomy teacher took some pics of them and told us how unsual the spots are. Cause they're so big i guess?

[Zero Alpha]

Originally posted by Arvon: that caused the solar flare. Oh don't worry! I have some special 'glasses' that were in a copy of Astronomy for looking at eclipses. The spots were large enough to see without magnification. Don't do this without proper equipment. And don't rely on welding glasses. For the most part they are too bright for solar viewing.

the difference bettween the brightness of an eclipse and the full on sun is huge. i think the standard advise is to *never* look at the sun. the only way to view the sun is via cameras with special filters. the picture they produce on a tv screen cannot damage your eyes. trying to look at the sun, even with any kind of filter, could still damage your eyes (seriously and permanantly).

[Bruce The Aussie]

the only time i'd ever lookd directly at a star....is to admire my work after finally crushing jupiter enough to start the reastion so it could be ajnother star.... [img]tongue.gif[/img] ...other then that i'd use camara equipment to look the sun... [img]tongue.gif[/img]

[Arvon]

Originally posted by Zero Alpha: quote: Originally posted by Arvon: that caused the solar flare. Oh don't worry! I have some special 'glasses' that were in a copy of Astronomy for looking at eclipses. The spots were large enough to see without magnification. Don't do this without proper equipment. And don't rely on welding glasses. For the most part they are too bright for solar viewing.

the difference bettween the brightness of an eclipse and the full on sun is huge. i think the standard advise is to *never* look at the sun. the only way to view the sun is via cameras with special filters. the picture they produce on a tv screen cannot damage your eyes. trying to look at the sun, even with any kind of filter, could still damage your eyes (seriously and permanantly). [/QUOTE]The eclipse in question was between 10% to 60% here in the states. Where I live the eclipse was about 40%.

[T/-/alali]

I look directly at the sun all the time and I have 20/20 vision. [img]tongue.gif[/img] I guess it's gonna effect me later in life.

[Donut]

Originally posted by T/-/alali: I look directly at the sun all the time and I have 20/20 vision. [img]tongue.gif[/img] I guess it's gonna effect me later in life.

No, you're going to be blind real soon.

[Deejax]

Looking directly into the sun does no damage if you do it for a few seconds. After a minute damage is likely and after ten minutes certain. A simple filter which decreases the intensity by a factor 10 makes it safe enough to look into the sun. You won't see anything though. When you want to see details, like sunspots, you need to diminish the intensity by approximately 1,000,000 times. Therefore you need filters to look into the sun.

It doesn't matter whether you look into a small part of the sun (just before or after eclipse) or into a totally uneclipsed sun. Only the area of damage in your eye gets bigger, not the time it takes.

There a various filters. Best known (in the netherlands, at least) are the eclipse glasses. These were designed to allow you to look when the sun is not (yet) eclipsed totally. When the sun is totally eclipsed you don't need them anymore. (somewhat logical)

A different, and readily available, method is looking through a CD. Or two CD's to be precise, one for each eye. And I mean looking through the CD material, i.e. the shiny bit, NOT through the hole. It works best with CD's that have little or no print. I only know that standard music CD do the trick. I don't know whether CD-R, CD-RW or computer CD's work too.

You can see the effect by looking at a light bulb. When you look at a light bulb without filter, the only thing you see is .. light (duh). But when you use a filter, like a CD, you can see the wire, the source of the light.

The problem with welding glasses is that they do not filter the entire spectrum. I do not remember exacly which wavelength they let through but I believe it was a part of the UV.