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Lab 1 Page 1 Lab 1 Go to: http://astro.unl.edu/naap/motion1/motion1.html Basic Coordinates & Seasons – Student Guide There are three main sections to this module: terrestrial coordinates, celestial equatorial coordinates, and understanding how the ecliptic is related to seasons on the Earth. Each of these sections has its own simulator(s). The background material necessary to utilize these tools is contained in each section. Prelab Terrestrial Coordinates Work through the explanatory material on units of longitude and latitude , finding longitude and latitude , and a bit of history (optional). Open the flat map explorer . Familiarize yourself with the cursor and how it prints out the longitude and latitude of the active map location. Note that you can vary the central meridian of the map (i.e. change its longitude). Use the “shift map” arrows at the top of the simulator to affect large rapid changes. Use the shift- click feature of the cursor for finer control. Note what information is accessible through the show cities and show map features check boxes. Center the cursor on your present location. Click the open Google Maps button to launch the Google Map tool focused on this location. Experiment until you get a good feeling for the Google Map’s capabilities and then close this window. (Note that you must be connected to the Internet to make use of this feature.) Answer questions 1-5 on Prelab part of Lab Report
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Lab 1 Page 2 Lab Starry Night Basics Run Starry Night Program (there should be a shortcut on the desktop) Make sure that the home (viewing location) is set to Waco, Texas Set the time to noon (12:00:00 pm) today. Do this by both placing the mouse over the hours, minutes, seconds, months or days and using the mouse’s scroll wheel to scroll through the options. You can also click on the time and type in the appropriate value and then turn off the daylight. Go to VIEW menu (at the top) and about half way down is the “Hide Daylight” option. Click that. At this point, we’re going to do something that is physically impossible: to stop time. Do this by clicking the stop button under the “Time Flow Rate” box. The stop button is the one with a square. Alright, so to move onto looking at stuff, feel free to grab the sky (by holding down the left button of the mouse) and drag it around to see what’s out there. You can also zoom in an out by using the scrolling-wheel of the mouse or with the “+” and “-“ buttons in the upper right corner under the “Zoom” box. If you hold your mouse over an object in the sky you will see that a whole slew of information is listed in blues letters. Throughout the course you will learn what some of that information means. Not much will look to familiar probably since it’s just a bunch of stars. We’ll help you recognize some things shortly.
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