How did the appointment go?
Well, yes and no. Yes, in that you can find new planets in that way! There's actually a bunch of techniques used, but that is one of them.
However, no is because it's not what my project is about. Instead of just stars, the telescope my project is concerned with is also looking at galaxies (so... a LOT of stars). In my project's case, really distant ones (billions of years ago away, so much so that they would appear like a point source or star in other wavelengths). Ideally we're going to use ones that are radiating a lot of radio energy right now (we're using those as a background source, or a searchlight, if you will).
The spectra it looks for against these sources should indicate if there's any hydrogen gas absorbing this radiation either near the source (which means there's neutral, relatively cold hydrogen gas in the same galaxy as the radiating source) or in a galaxy between us and the source. You need cold neutral gas (and lots of it!) to form stars, so knowing which sorts of galaxies have gas tells us about galaxy structure, and also knowing these details in distant and hence 'early-type' galaxies can help us know how galaxies evolved over the ages. There's a lot in those areas we don't yet know.