In case you weren't aware, there is a Doctor. He is very grumpy, looking up at the sky with his telescope. Where did he get the telescope? Well, he may have procured it from Sarah's attic. She'll have to come down and wrestle it out of his cold Time Lord fingers, though, because this telescope is him working. What's he working on? Well, there's a large star chart in front of him with lots of 'X's on it.
Bothering him would probably be beneficial to his sanity, if not his current occupation.