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Horizon Menu... Satellite... Planet... Planet Feature... Comet... Asteroid... --------------- Star Nebula Open Cluster... Globular Cluster... Constellation... Galaxy --------------- Coordinates Go To .TDF object... Star, galaxy, nebula, and coordinate options are discussed in their own subchapters below. (The "Galaxy" option also includes "clusters of galaxies"). The first, "Object Name", option is, for some people, the only option needed. Click on it, and Guide will ask you to simply enter an object name, such as "M 57" or "IC 433" or "Neptune". It can also locate stars such as "gam Per", "61 Cyg", "Z Cam", "SAO 123456", or "Betelgeuse"; asteroids such as "Vesta" or "1992 QB1"; and artificial satellites such as "ISS" or "WIRE", and many object names not specified here. If in doubt about an object name, just try entering it. At worst, Guide will respond with "Object not found." Unfortunately, it can't decipher all possible object designations, and some are ambiguous (for example, "Io" is both a satellite and an asteroid; "Mu Cep" refers to two different stars, depending on if "Mu" is a Greek letter or the variable star designation MU; and so on.) So the following options are very useful: To find a Messier, NGC, or IC object, click on one of these three menu items and enter the catalog number. Guide will recenter on that object. The Messier option will bring up a list of all the Messier objects, with a bit of information about each. Objects below the horizon will appear in red, those near the horizon in yellow, and those well above the horizon in green. The "Horizon Menu" brings up a small dialog box listing eight compass points on the horizon, plus the zenith (point directly overhead) and nadir (point directly below you). Click on one of these ten buttons, and Guide will center the chart on that point. The "Satellite" option will prompt you to enter the name of an artificial satellite. Do so, and Guide will recenter on that satellite.
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