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Colt
2003-Jun-17, 09:11 PM
I remember reading something about this the other day but can't seem to find it in a search. My mom was just sitting outside when she looked up (sunglasses on) and saw this ring around the sun. She yelled for me to come outside and look at it. Well, I looked at it sort of and then went inside to break out my welders goggles. It looks to be about 33MM across when a ruler is held at arms length. The edge of the ring looks like clouds sort of.

It seems like something that I know but can not remember. Thanks. -Colt

SeanF
2003-Jun-17, 09:24 PM
Did it look like this (http://antwrp.gsfc.nasa.gov/apod/image/0201/solsticehalo_appleton.jpg)? If so, it was probably one of these (http://antwrp.gsfc.nasa.gov/apod/ap020114.html).
:)

eburacum45
2003-Jun-17, 10:28 PM
All you need to know about parhelia, sundogs, haloes. rainbows-
here
http://www.sundog.clara.co.uk/halo/parhelia.htm

Colt
2003-Jun-18, 05:07 AM
Yep, looked like those except it happened at 2PM with full sun. Thanks guys. -Colt

Tobin Dax
2003-Jun-18, 07:03 AM
It was most likely a halo like they're saying. I've seen one from the moon when it was well above the horizon. I don't know much about welder's goggles, but are they polarized? You mother's sunglasses likely are if she saw this clearly. Scattered light is usually polarized, so a halo might would probably show up better through a polarizer (goggle/shades).

Dax

kilopi
2003-Jun-18, 12:07 PM
It looks to be about 33MM across when a ruler is held at arms length.
How big is the Sun when you hold the ruler at arm's length? If that is the 22 degree halo, then the Sun (a half degree) would be less than a millimeter, which seems kinda small at arm's length.

SeanF
2003-Jun-18, 02:08 PM
It looks to be about 33MM across when a ruler is held at arms length.
How big is the Sun when you hold the ruler at arm's length? If that is the 22 degree halo, then the Sun (a half degree) would be less than a millimeter, which seems kinda small at arm's length.

Hmm, good point. Wonder if Colt meant 33cm.

Karthesios
2003-Jun-19, 08:14 AM
Last time I saw the "sun dog" phenomenon was on a flight to Seattle, saw 'em at cruising altitude. It was a pretty cool sight.