The red glow shown on the trees is a mixture of red light from us astronomers and the red glow from a camp fire which was settling down by that stage. To the left of frame in the sky you can see the Small Magellanic cloud and the bright star Canopus. Canopus is a familiar southern star at a distance of about 310ly.
The photograph shows a variation of colour across the horizon including the typical orange of the Wheatbelt horizon night sky with some green “airglow”. The distinct almost horizontal line to the right of frame near the horizon is a line of thin fog, cloud or such.
Prints of this photograph and any other astrophotograph in my photography shop and blog can be purchased by contacting me.