The technitians right now happen to be automated. Still, there's a lot of practical astronomy done in front of a computer. Positions in the sky can be described in any number of ways and it is often important to translate back and forth.

Constellations are stupid and utterly arbitrary from any perspective other than a historic one. I'm studying a sightline to 3C273, and while this is an incredibly famous object and I can recite the coordinates to you in ra-dec and galactic, I haven't the foggiest what constellation it lies in. Who cares? Constellations are for naked eye observing and aiming telescopes without the use of computers. Other than that, they really serve no purpose.