Data cable....

Hi folks, a few of you may remember me. A few years ago, I was really into astronomy. My wife's illness forced me to stop. Well, my wife passed away. My fiance and I have purchased some land in the Sierras and will be building a house on it. It's got a HUGE southern facing lot about five hundred feet up the mountain. I have conduit installed to the pad from the house site. I'll be pulling power cable in soon and wanted to know this: If I wanted to remote operate/view with a telescope, what kind of cable should I pull in for later use. I'll probably be getting a 14" cat or nice refractor later. It'd be the cat's meow to sit down in the warm house and collect images from the scope!