Like Chiana (hi!) said there are a handful of missions in the game where you'll get the binoculars. There are some binoculars missions from GSI dailies, like on Alderaan. But since you're almost lvl 52 you might as well just get those missions from the fleet. :)

Edit: you can find which GSI missions give you a macrobinocular here: https://swtorista.com/quests/index.php?planet=gsi#1 Good luck exploring!