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1 .Listen to a conversation between a student and an employee at the campus observatory.
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2 .(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.
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3 .(man) Oh, yes, I know, no need to apologize. It happens all the time.
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4 .When we get bad weather like last week\'s, schedules get shifted, all part of working at an observatory.
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5 .Believe me, we really appreciate all the help you\'ve given us here as a volunteer.
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6 .(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?
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7 .(man) Yes. As I said, you\'ve already done a lot. I don\'t want to overtax your schedule.
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8 .But if I know you, you\'re the perfect person to help us launch this. We want to teach students about astrophotography.
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9 .(woman) Oh I love astrophotography, capturing photos of planets, stars, galaxies. It\'s great! I\'d love to help get more people involved.
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10 .(man) And I hear you’ve even done a little astrophotography yourself?
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11 .(woman) Yeah, but I\'m definitely an amateur. I mean, the first time I tried it, I wanted to capture an image of stars.
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12 .I was using a friend\'s telescope and an ordinary camera, but instead of stars, there were just these blurry lines on the picture.
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13 .(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.
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14 .(woman) Really? (man) Yes. Some find them interesting to look at. They can also be informative.
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15 .When I started astrophotography, I knew from the star trails whether my camera support was rigid enough.
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16 .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.
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17 .(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.
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18 .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.
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19 .(man) I\'m impressed. Guiding can be a little tricky. Those techniques are hard to learn.
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20 .But you know, we\'re planning to get some equipment in that will have capabilities for automatic guiding.
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21 .(woman) Excellent. That\'ll be so much easier than the manual guiding I’ve been practicing.
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22 .(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.
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23 .So, we should pull you off of some of the viewing sessions you are scheduled to lead.
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24 .(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.
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25 .(man) Okay, I\'ll talk to Professor Smith about setting up some evening meetings. I think it should be doable.
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