I went go a Rooftop café with a friend. It was a sunny day in Sofia on the 30rd of Sept 2014. As the place and the view were new to me I took several pictures of the mountain. The sunlight was strong so I couldn't really see my iPhone screen (especially the small window of the app Hipstamatic I used to get a retro filter). After I went back to our table at the shadow, I looked at the photos taken short seconds one after or other. That's when I noticed a flying object on one of them. I talked to a friend who is scientific and interested in the topic and he send me your website.