By Mike Busch
Around 4:30 this morning I brought my dog out and noticed a distinct halo around the moon sometimes referred to as a Lunar Halo.
Halo’s occur when ice crystals in high cirrus clouds are illuminated, in this case by the light of the Moon. They often presage rain or snow which certainly seems to be the case today.
After a few shots, I set up my camera on a tripod and setup a time-lapse. I set up my camera to shoot at 4 second intervals and ended up with nearly 1000 shots condensed into a 25 second video. Note the difference in altitude of the cirrus and halo with the lower cloud deck racing by.