Moon | Diffraction Grating View

I headed home after attending the public lecture on aurorae by University of Iowa professor Craig Kletzing. One part of his talk included a demo of color emissions from the element oxygen. It is responsible for nearly all the colors associated with aurorae. We needed diffraction grating glasses to see the demo effect such as these.

As I drove home, I noticed the bright crescent Moon. I stopped the car to look through my grating glasses. Once home I set up the camera with the grating over the lens. It was a nice way to end the day.

2017_0202moondiffracted

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7 thoughts on “Moon | Diffraction Grating View

  1. That’s really a neat effect. I went looking to see what the glasses were, and discovered (1) some can be had as cheaply as forty cents, and (2) the stores that sell them also sell eclipse watching glasses. I might be in the market for those.

    I thought about you Wednesday morning when I had a new experience. I had to leave home before sunrise to make an hour-and-a-half trip to another town. I went via a county road that cuts across farmland and prairie. There was heavy ground fog, and the sun was behind me as it rose. As the light got brighter, I noticed what looked like a white arc on the other side of the car, off in the fields and woods. I was between the sun and the arc, and as I drove, it just kept following right along — rather, it continued to precede me.

    I’d never heard of a fogbow, but there’s no question in my mind that’s exactly what I saw. It was amazing — just like someone had poured bleach over a regular rainbow. No — no camera along. I’m not sure I could have gotten a decent photo, anyway. But it was a great experience. You just never know what you’ll find “out there.”

    Liked by 1 person

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