i just opened it in CS4. After examining it, I am almost certain it is an average cut an paste job. I have to insert computer models in photographs for still architectural renderings. It looks good in the picture but you can tell when you go to "Image" "Adjustments" "Calculations" or even "invert" there is some unusual distortion in the clouds below that make it look cut and paste. I could be wrong. I would like to see an additional photograph or independent confirmation before I say it is legit.