"Talking involves two people having a conversation, not one of the two practically hanging off of a very expensive telescope. I'm not going to have any equipment broken, nor am I going to have a student as bright as you are being harassed while you are clearly trying to work, Mr. Banner."

Constance drew herself up to her full height, taking out her wand and doing a bit of quick spellwork, which set a very specific barrier up around the telescope Bruce was currently working around. Sound could pass through it. So could any student with a legitimate, schoolwork-related question. But anyone with inappropriate intent wouldn't be passing through that barrier.

"Now, Mr. Jaegar, if you are actually just speaking to him, you can still do so. If you had other plans, I suggest you go back to Gryffindor Tower."