I've seen similar photos in telescope, astronomy, and ISS groups on Facebook... These groups are pretty interesting overall, too. FB groups also have a really long tail... Don't be surprised if one pops up, "Your photos of the ISS, medium to high detail" or something like that.

some general information:

http://www.hobbyspace.com/SatWatching/

http://www.satobs.org/satintro.html

http://www.astrophoto.fr/satellites.html (well known guy)

https://www.n2yo.com/?s=39030