So I've been looking for this one in a long time, but to no success. I know it's a bit similar to Felix Titling, but one of the slight difference between that one and the "Stargate font" is the R letter. This font was also used in other productions like Caligula, Disaster Movie and Armageddon (which has a different R but the other letters are kinda like the same as well)

Michelangelo  Suggested by jerseygirl