Lucifer is the name given to the angel that fell from god's grace, he then became satan or the devil. Lucifer means bringer of light so it is rather fitting that a telescope looking at stars is named Lucifer.
https://en.wikipedia.org/wiki/LuciferIronicly Lucifer was the most beautiful angel in all god´s celestial court and he was the one who betrayed him, it´s a bad joke called this telescope as the angel who betrayed god.