This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionWhile the sky whirls away (13908792282).jpg
I took this shot after 10pm of Halnaker Windmill near Chichester (which can be seen in the bottom left, causing the light pollution). This is actually a composite of 50 30sec exposures combined using Startrails.de to produce a 25min exposure. This is the first time I have used a higher ISO setting to capture star trails, and I was quite impressed with the shot. The only thing out of place was the fence around the base of the windmill!
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
https://creativecommons.org/licenses/by/2.0CC BY 2.0 Creative Commons Attribution 2.0 truetrue