Before doing any of the planetarium activities, you should
install Starry Night, read the user’s manual, and experiment
using the planetarium controls until you are familiar
with what the various controls do. When the registration
box appears, click on “ok.”
Click on the “Location” button to bring up the Viewing
Location window. Set the geographic location to a
major city near you or enter your own longitude and latitude.
Set the time to 9 P.M. on today’s date. Click on the
“Lo” button at the top of the screen to display local coordinates
(altitude and azimuth). Click on the blue daylight
button at the top of the screen to turn off daylight.
On the vertical toolbar on the left, set the field of view to
100°. If the horizon isn’t displayed, click on the “Display”
button and turn on the horizon. Scroll in azimuth
until you reach 270° (due west). Scroll in altitude until
the horizon is about a third of the way from the bottom
to the top of the display. Click on the “Time” button to
bring up the Time Palette. Set the step size to 1 minute
and start the clock. Watch the motion until a couple of
hours have passed. Then scroll to azimuth 360° (due
north) and observe the motion of the sky until a couple
of hours have passed. Try to find the location of the Polaris.
Compare the motion of the sky when looking west