Yep, it's fully automatic
Be careful when scooping... aim for a spot just above the green arc that displays around the sun... going below that arc will kick you out of supercruise and you will have to wait till you drive cools down, then escape the sun's gravity by engaging it again and lining up with an escape vector... all the time in curing heat damage... better just to avoid that altogether
Once close enough, you'll see two bars displayed... one is your temperature, one is your fuel tank. Fly the ship to follow a curve over the sun's surface (but avoid the green arc), and watch the two bars... the fuel tank bar will also show the rate at which you are scooping... the lower, and faster you travel, the better the rate.
You can safely scoop with no damage at heat levels up to 150%, but anything above that and you will start to get heat damage. I always scoop until the temperature reaches 140%, then fly away from the sun... the heat will climb a few more degrees, but then start to drop again. Just repeat the process till your tanks are full.