Listen to a conversation between a student and an employee at the campus observatory.(woman) Sorry, I had to ask you to reschedule our appointment, Mr. Jackson, I was helping out with a group session in the solar telescope room.(man) Oh, yes, I know, no need to apologize. It happens all the time.When we get bad weather like last week\'s, schedules get shifted, all part of working at an observatory.Believe me, we really appreciate all the help you\'ve given us here as a volunteer.(woman) It\'s fun for me. I get experience using telescopes and I enjoy answering people\'s questions. But you say there\'s a new program I can help on?(man) Yes. As I said, you\'ve already done a lot. I don\'t want to overtax your schedule.But if I know you, you\'re the perfect person to help us launch this. We want to teach students about astrophotography.(woman) Oh I love astrophotography, capturing photos of planets, stars, galaxies. It\'s great! I\'d love to help get more people involved.(man) And I hear you’ve even done a little astrophotography yourself?(woman) Yeah, but I\'m definitely an amateur. I mean, the first time I tried it, I wanted to capture an image of stars.I was using a friend\'s telescope and an ordinary camera, but instead of stars, there were just these blurry lines on the picture.(man) Oh, yeah. Star trails, we call those lines. Earth is moving and cameras record that movement. Sometimes that\'s the effect of photographer wants.(woman) Really? (man) Yes. Some find them interesting to look at. They can also be informative.When I started astrophotography, I knew from the star trails whether my camera support was rigid enough.If the trails were straight, it meant only earth\'s movement was being recorded. But if they were jagged, I knew the camera was moving, too.(woman) I see. Well, the star trails weren\'t what I wanted. I love that the telescopes here have motion tracking, so you don\'t get those lines.And since I’ve been here, I’ve learned a couple of techniques for guiding, you know, using a separate telescope to line up a guide star, to compensate for unexpected changes in the atmosphere. I didn\'t know about that before.(man) I\'m impressed. Guiding can be a little tricky. Those techniques are hard to learn.But you know, we\'re planning to get some equipment in that will have capabilities for automatic guiding.(woman) Excellent. That\'ll be so much easier than the manual guiding I’ve been practicing.(man) Now, as I said, I don\'t want you to overextend yourself. If you take this on, you\'ll need to come to some planning meetings over the next couple of months with me and Professor Smith.So, we should pull you off of some of the viewing sessions you are scheduled to lead.(woman) Okay, but just to let you know, my class schedule is pretty heavy during the day. That\'s why I usually volunteer here at night.(man) Okay, I\'ll talk to Professor Smith about setting up some evening meetings. I think it should be doable.