The owner of the set goes by the username of RubyVrooom in Flickr, who seems to be a big time DUCATI fan and a good cameraman too. More of his collection of Ducati photos can be seen in Loud Bike 2008, Building the LoudBike, Desmo Club BBQ 2008, Hypermotard, actually there is a little bit of Ducatis in all his galleries. Also there are some really excellent sceneric photos in his collection. Great Job!
Taken from his link - On a rainy spring day in 2009 Ducati collectors and enthusiasts gathered at Lou Saif's to display and honor some of Ducat's greatest racing motorcycles of all time, the Ducati TT1 and TT2 of the 1980's. Of the bikes pictured here, 4 are original TT's, including a genuine factory racer and several NCR specials. The rest of the group are hand built using period correct frames, engines and components in the style of the period, which are nearly impossible to find at this point.
Taken from his link - On a rainy spring day in 2009 Ducati collectors and enthusiasts gathered at Lou Saif's to display and honor some of Ducat's greatest racing motorcycles of all time, the Ducati TT1 and TT2 of the 1980's. Of the bikes pictured here, 4 are original TT's, including a genuine factory racer and several NCR specials. The rest of the group are hand built using period correct frames, engines and components in the style of the period, which are nearly impossible to find at this point.