Tag Archives: contrail

Elongated Sundog and Contrail

Elongated Sundog and Contrail

I got off the freeway to catch the train out to the office last Tuesday morning, and saw this incredibly bright sundog off to the east. I couldn’t get a parking space, so I had to drive the rest of the way, but I did get a couple of photos.

The sun is off-frame to the right.

I’m not sure why the bright patch was so elongated and well-defined. My guess is that a smaller cloud in the foreground happened to be in exactly the right spot to reflect the sunlight.

I had to shorten the exposure in order to actually get some detail on here, like the bit of color spectrum in the middle.

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Links: 1.0 Releases, Sci-Fi and Science Fact, The Missile that Wasn’t

  • Matt Mullenweg on Apple, WordPress & tech release strategy. 1.0 Is the Loneliest Number
  • Robert J. Sawyer on the relationship between science fiction and science fact: The job of sci-fi isn’t to predict “THE future,” but “to suggest a smorgasbord of possible futures, so that society may choose the one it wants.”
  • Mystery California missile turns out to be a contrail lit by sunset, seen almost end-on so that it looked vertical. The photo actually reminds me of a contrail I once saw.
  • A fun recreation of George Seurat’s painting, A Sunday Afternoon on the Island of La Grande Jette. The photo was staged back in 2006, but I hadn’t seen it until it popped up on Reddit a few days ago. I find it amusing that people have been posting lyric fragments from Sondheim’s Sunday in the Park With George in notes on the photo. There’s also a side-by-side comparison of the painting and the recreation.

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Contrail Shadow, Halo, Haze & Sundog

While driving around lunchtime, I saw an airplane pass overhead, its contrail casting a shadow on the thin cloud layer below. I had my camera handy, and was stopped at an intersection, so I snapped a couple of shots. As often seems to happen, the first, haphazard one was the best.

The diagonal line extending down from the sun is, I believe, a sun pillar-like effect in the trails left by the windshield wipers. Also: Unless I’m mistaken, you can just barely see the edge of a halo in the feathery clouds at bottom center. It’s the slight reddening.

A few hours earlier, I saw this:

I glanced out the window while changing lanes on the freeway this morning & noticed the bottom edge of this halo. By the time I had a chance to stop the car and really look, the lower arc seemed to have disappeared, but the left side was sharply visible – as was a sundog. I rolled down the window and snapped a couple of photos while waiting for the light to change. Unfortunately, I couldn’t position anything to block the sun, so the exposure isn’t all that great.

By the time I reached my destination and parked, it had all faded except for a slightly bright patch in the clouds to the left.

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