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Image Engineering created a Macintosh based laser show editing software package called Aurora.
Thanks to OSR, one of these systems came to the SELEM event in 2018.
The system uses a DigiDesign Pro Tools Audio Card as the output interface. Instead of connecting to the normal Pro Tools audio interface boxes, Image Engineering had a special output box that contains the electronics for 4 discreet laser projector heads.
This is a picture of the Pro Tools Audio Card. This I believe was the 2nd generation of cards from the Pro Tools System.
I will try to get some software screen captures. As I recall it is timeline based in that it uses timecode numbers to fire clips. More info to come.