A corona is produced by the diffraction of sun or moon light by individual water drops or ice crystals in a cloud or fog. A corona consists of small number of concentric colored rings with a central bright area around the celestial object.

The size of the corona depends on the diameters of the water drops, the smaller the drops, the larger the coronae. For the same reason, the corona is clearest when the size of all the drops are most uniform. Reddish colors always occupy the outer part of a corona's ring. A corona is essentially an Airy disc caused by the atmosphere.

Awake to a very cold morning, dress in my winter blues and step out side to walk to the restroom and about half way there, I look up to see if I can see the moon and any planets. To mu surprise, I see, not only Venus but but also the moon with what looks like a rainbow around it, so I take a couple of photos of the moon.

Upon my return to the jammer, I begin boiling water for my morning meal. Once my three cups are filled with hot coffee, hot tea and my meal, I climb back in the jammer, turn on my computer and begin pounding the keyboard.

The atmospheric conditions this morning were somewhat overcast and cloudy, the temperature was in the high 30s and there was a light mist in the air. The time was just coming out of even, (twilight) and the sky was already a light blue in color.