Lunar Haloes and Orion

Lunar haloes are usually too faint for the eye to see any colour, but this long exposure (about 2 minutes) shows that they are no different to daytime haloes. The constellation of Orion is clearly visible through the lower left part of the halo.

This bright section of 22 degree halo (or lower tangent arc) only lasted a few minutes before it was hidden by lower level cloud. The constellation of Orion is visible below centre, Betelgeuse is the reddish star just inside the halo. (the blue patches are lens reflections).

The cirrus was more extensive in this shot so the background stars are barely visible. Orion is just visible at bottom left with Auriga showing through the top left part of the halo.

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