
Late afternoon, looking west towards downtown… it looked like a splotch of rainbow in the sky. Ordinarily, you only see rainbows when you’re looking away from the sun. This was close to the sun, close enough to make it difficult to see. Tinted windows helped quite a bit with the glare.
Wikipedia says it’s a “sun dog”, caused by sunlight refracting through ice crystals in cirrus or cirrostratus clouds. The geometry says the sun dog will be 22 degrees away from the sun. There was a faint sun dog 22 degrees on the opposite side.
Thanks to Mari for the photos, and for being the only one in the office with a digital camera. Here’s a shot to put it all into context. The sun is behind the curtain to the left. You can see the cirrus clouds that caused the sun dog. There are some spots and streaks on the tinted window, and the faint vertical line by the sun dog is probably a reflection. Not the best conditions for photography, but without the tinted window, there was so much glare that it was hard to see the sun dog at all.
