晕不只是白天特有的现象，当薄卷云面纱般地掩着明亮的月亮时，可以找到它。22° 晕很容易看到，但有时才可看到幻月（moon dogs）或其它晕现象。
图片说明：一个22° 围着月亮木星在晕的右上角，西班牙的Juan Carlos Casado在San Sebastian拍，用16mm的镜头。（转载许可©Juan Carlos Casado）
水滴也能产生围着月亮的环，这些围着月亮的光环是由云中的小水滴折射产生的。
原文：Halos are not an exclusively daytime phenomena. Look for them when thin cirrus veils a bright moon. 22° halos are easily seen but look also for "moon dogs" and others.
A 22° halo surrounds the Moon, Jupiter lies on the halo at upper right. Captured by Juan Carlos Casado at San Sebastian, Spain with a 16 mm lens. Reproduced with permission, ©Juan Carlos Casado
Water drops also produce coloured rings around the moon. These coronae are closer to the moon than the 22° halo and are caused by diffraction by water droplets in clouds.
置顶卡
变色卡
千斤顶
显身卡