This website is a useful tool for identifying stars/constellations from images, it can provide context for images where there is no location etc given.
It only works if enough stars are visible.
About Astrometry.net
If you have astronomical imaging of the sky with celestial coordinates you do not know—or do not trust—then Astrometry.net is for you. Input an image and we’ll give you back astrometric calibration meta-data ... Read even more
