Moonlit scenes from this winter
Last night’s Hunter’s Moon rising through the clouds.
February’s Super Snow Moon was magical in more ways than simply beautiful. The unusual mirage captured during the Moon’s rise was seen by other Cape Ann photographers as well as myself. Lisa Freed from Rockport photographed the omega shape, rising adjacent to Motif No.1.
The effect has several names including Omega Moonrise, Etruscan Vase Moonrise, and Inferior Mirage Moonrise. The omega shape is seen more often during a sunrise, so it is quite exciting that we were witness to an Omega Moonrise on Cape Ann!
From my reading, this is how I understand why it occurs:
During cold weather, when the seawater is warmer than the air, the lowermost air layer is warmed up by the water and produces a temperature difference.
This omega shape is a type of inferior mirage. The refracted (inverted) image is actually below the object’s true position. When the Moon protrudes above the horizon at Moonrise, its inferior mirage can sometimes be seen below it, where it joins the true Moon, creating an omega shape. For this mirage to occur, a layer of very warm air must lie just above the sea surface.
A few minutes later
Last night’s moonrise over the Back Shore was spectacular. Click on the sequence above to see full size. I don’t know why the Moon has a “neck” in the middle photo, or what that reflective appearance is termed, but it was so interesting to see.
February’s Snow Moon was also a Super Moon. It was the the second of a trio of Super Moons taking place in 2019. The Super Snow Moon was also the largest of the three (closest to Earth). The third and final Super Moon of the year is taking place on March 21st.
Our Charlotte loves looking at the Moon, so when she popped up in bed at 5:30 in the morning and exclaimed Moon!, I bundled her up and off we went to see the Moon setting over the Harbor. I wrote last month that she loves looking up in the sky for the Moon, largely from reading her the story book Good Night, Moon, and now we are reading Buenos Noches, Luna, practicing for an upcoming trip to Mexico.