This is an awesome hydrogene gas field in Perseus… the name is derived from the peculiar shape which resembles the state California.
Unfortunately it is not visible to the eye even with optics. A DSLR could take the picture, as an example below which is taken with my small TS65APO telescope and the modified Nikon D750, from under the streetlights in Hoegaarden.
I was so lucky to spend some time of in the south of France this summer. Location was the camping site ‘Les Bardons’ to the north side of the Grand Luberon, at an altitude of 550m.
Having camped here for 25+ years I know this area to be very, very consistent in blue skies. Unfortunately also light pollution is marching in from Aix-en-Provence, and Avignon, Apt. The mean SQM in August would be between 21.15 and 21.30
These are the first processed images (click on the image for a larger view):