by Mike White, Levin, New Zealand
In an earlier version of this image, the Moon was overexposed because of the 15-second exposure required to capture the halo adequately, and it kind of detracted from the halo effect as well as Scorpius. Here, I have simply superimposed a properly exposed image I took of the full Moon only 4 minutes prior.
The full Moon (on 2009 June 08 at 0852 UT) and some high-level mist/ice particles combined to provide a fabulous Moon halo effect. In viewing the full-size image, you will see that the constellation Scorpius has been "captured" by the halo and is fully encapsulated within it (top-left of halo to top-right). The halo was so large it would only just fit in the field-of-view, so the image has not been cropped at all.
Everything in the image except for the Moon is a single 15-second tripod-mounted exposure at ISO 100, aperture 4.0 on my Canon PowerShot S5IS. The zoom lens is a 6-72mm and is set at 6mm. The Moon was shot with a 1/200 exposure at ISO 100, aperture 4.0.