The oldest professional photo of a UFO object is from Wien observatory, in 1906 !Photo plate from Bruce telescope (Wien observatory).Exposure time: 3 hours Date: 11 Nov 1906 As you can see, the object is very dim, like a periodic flash.((NUFORC Note: We have requested a copy of the photo, or a link to a website, in order to view the image. We have not been successful, yet, although we are in correspondence with the source of this report. PD))