At right silhouetted against winter's bare branches, a 22° halo imaged by Rafael Schmall in Hungary at Fejer, Adony city. ISO400, 13s exp, f 3.5
This February's lunation saw an unusually large number of 22° halos submitted to OPOD! Here are some. European observers braved brutally cold clear nights. Others were in warmer climes.
All images ©individual photographers, shown with permission
Night skies show well this familiar, most frequent yet only partially understood halo.
We see it is not a ring but instead glows outside its subdued red inner edge shading slowly into velvety darkness.
The stars help gauge its size. Here it is centred on the moon in Taurus yet on one side slices through Orion the Hunter and on the other reaches Perseus son of Zeus and Danae, founder of Mycenae.