Kevin Palmer

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  • During the most intense part of the geomagnetic storm, I looked straight up and this is what I saw. It's known as a corona, and it looks like the aurora is radiating outward from a single point in the sky. This was the first time I've seen a corona and it didn't last long.
    Aurora Corona
  • This aurora corona was mesmerizing to watch. It was moving and changing so fast, even a 1 second exposure was too long.
    The First Corona
  • This was my favorite image of the corona during the solar eclipse. The effects of the magnetic field can be clearly seen, with the coronal streamers aligned to the north and south poles of the sun. The star Regulus is also visible on the lower left.
    Solar Corona
  • After an auroral substorm, a corona formed at the zenith. A corona is a very fast moving type of aurora, where the rays appear to converge. But by the time I finished a time lapse and pointed my camera straight up, most of it was gone.
    At the Zenith
  • As soon as I stepped outside this vivid halo commanded my attention. I have never seen one this vivid. The colors at the bottom were very obvious although I didn't see the color in the corona until looking at the picture afterwards. It didn't last long as low-lying clouds came in and obscured the icy cirrus clouds higher up. A full moon on Christmas is somewhat rare. But even more rare is the fact that it was in the mid-60's late at night in Maryland when I took this.
    Christmas Eve Halo
  • The solar eclipse was absolutely incredible. There's no way to capture it in 1 picture or 1,000 pictures and there's nothing really to compare it to. During the minutes surrounding totality the light changed so fast and there was so much to observe and photograph that it was overwhelming. It felt like time stood still and yet it was all over in an instant. I listened to the dozens of people around me who also climbed the 10,276' Laramie Peak to observe this eclipse. Cheering and exclamations of "WOW" were an almost involuntary reaction.<br />
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This is a composite showing 3 partial phases of the eclipse with a solar filter, as well as 3 of the features that are visible during totality. A group of sunspots was visible before being hidden by the moon. The red fringes on the left are solar prominences. Bigger than any planet, prominences are made up of dynamic loops of hot plasma and will often explode. This outer atmosphere of the sun is sculpted by it's magnetic field. The temperature of the corona is up to 450 times hotter than the surface of the sun and no one knows why. At the top right is an effect known as the "diamond ring." It is the moment the first bit of sun emerges from behind the moon. I was surprised by just how suddenly it popped out, with all the brightness of the sun concentrated into a single point.
    Multifaceted Eclipse
  • I went back and had another go at processing my solar eclipse pictures. Here I combined several shots and tried to show every feature of the eclipse that I was able to capture. There is such a huge range of light that it's impossible to capture it all in one image. The glow around the sun is called the corona. Shaped by complex magnetic fields, it consists of super-heated plasma up to 450X hotter than the solar surface. The sun's north pole is located at 10 o'clock where the magnetic field lines are shorter. The red fringes on the right are fiery solar prominences, several times the size of Earth. Also shown is the diamond ring effect, when the first bright sliver of sunlight reappears from behind the moon. Details on the lunar surface can be seen because of an effect called earthshine (not to be confused with moonshine). Sunlight is reflected off of the Earth and faintly illuminates the dark side of the moon. Regulus is the star visible on the lower left.
    Eclipse All In One
  • In mid-latitudes I always consider bright moonlight as an obstacle to seeing the aurora. But in the Arctic the aurora is so bright that I can use a short exposure, and including the moon in the shot is not an issue.
    Snaking Aurora
  • After hitting the trail at sunrise I made it to the top of Laramie Peak shortly before 9AM and setup my gear. The true summit is littered with towers and communication equipment, so instead I pointed my camera at this subpeak to the south. The weather was perfect and the thick smoke from Montana wildfires that I was worried about stayed to the north. At 10:23 the partial eclipse began, visible only through a solar filter. Anticipation started to build as more of the sun became blocked out. After over 50% of the sun was covered the light became slightly dimmer but it was only noticeable if you've been watching the whole time. The temperature dropped by over 20°F and jackets came out. At 90% the sky became a dark blue and the landscape took on a smoky appearance. At this point the light began to change by the second. The moon moves from west to east, and the shadow approaches at 1700mph from that direction. At 11:45 the last piece of sun disappeared. Some of my favorite effects of totality were the parts I couldn't capture. Cirrus clouds in the west glowed orange like at sunset. It was similar to twilight but instead of the glow appearing in only one direction, it encircled the entire horizon. Venus came out first, then the other planets and brighter stars. It's a very strange feeling looking at the sun in what's normally the brightest part of the day and instead seeing a black hole. The ~100 people around me marveled at one of the most beautiful spectacles in nature. But just like that it was all over. The full disc of the sun returned at 1:11PM.
    Fleeting Moment
  • February started off with a geomagnetic storm on a mild winter night. At 1AM the northern sky briefly glowed green as seen from St Xavier, Montana. The Bighorn River provided a reflection; the current is fast enough here that it doesn't freeze over. I scouted out this location in the fall and knew it would be a great spot to camp out and wait for the aurora when the opportunity presented itself. A giant hole in the sun’s outer atmosphere (the corona) allowed the solar wind to escape and head towards Earth. Coronal holes rotate around the solar disk every 27 days, so they can be predicted in advance. When the high speed solar wind (up to 600 km/second) hits Earth’s magnetic field, charged particles wrap around the poles and the auroral oval expands towards the equator. This leads to the aurora being visible from mid-latitudes. But the exact timing, local weather, and other factors dictate where it can actually be seen.
    Bighorn River Aurora