Here is another picture of the lunar eclipse that shows the "Blue moon" effect even more clearly, and this one has been image corrected to show the correct orientation of the rabbit/duck illusion on the moon's surface.

The photo above appeared on the lunar eclipse gallery page on the Sky & Telescope website. Here is a link to the article on February's Lunar Eclipse.

So happy St Patrick's Day! Are you wearing green? It's always St Patrick's day when you are half Irish like I am.