User Manual

27
eyepiece, then press ENTER. At that point the
telescope has a high precision alignment to that
part of the sky and it then slews to the object
that was originally requested.
Targets switches between Astronomical targets and
Terrestrial targets. If “Astronomical” is selected, the
telescope tracking motor is activated and any object
you observe will remain centered in the eyepiece.
If “Terrestrial” is selected, the tracking motor is
turned off..
Site provides access to several options including:
• Select: Displays the currently selected observing
site. Use the Scroll keys to cycle through all
available sites (see Add below). Press ENTER
when the site you wish to select displays. Use this
option when you move to a different geographic
location.
• Add: Allows you to add new observing sites to
the database (up to six sites may be stored).
Scroll through the list of Countries/States. Press
ENTER when the site you wish to add displays.
Then choose the desired city in the same manner.
• Delete: Deletes a stored site from
the database.
• Edit: Edits a selected site, including: the name,
latitude, longitude, and time zone. Time Zone
refers to the Greenwich Mean Time (GMT) time
zone shift. Users West of Greenwich, England
use “-” hours, East of Greenwich use “+” hours.
For the United States, look up the time zone shift
in the table at left.
AudioStar compensates for daylight savings
time, if selected.
Owner Info accesses the owner information menu,
including:
• Name:Usersmayenterboththeirrstandlast
names using the Up and Down Arrow keys to
cycle through the alphabet. Use the Right and
• Tracking Rate: Changes the speed at which the
telescope tracks targets in the sky.
a. Sidereal: The default setting for AudioStar;
sidereal rate is the standard rate at which stars
move from East to West across the sky due to
the rotation of the Earth.
b. Lunar: Choose this option to properly track the
Moon over long observing sessions.
c. Custom: Allows entry of user-dened tracking
rates.
• Reverse L/R reverses the functions of the Left
and Right Arrow keys (i.e., the Right key moves
the telescope to the left).
• Reverse UP/DOWN reverses the functions of
the Up and Down Arrow keys (i.e., the Up key
moves the telescope down).
• Quiet Slew sets the maximum slew rate to 1.5°
for quieter operation.
• Max Elevation allows you to enter a value in
degrees that sets a limit as to how far the optical
tube can swing upward during a programmed
slew. (Note that it does not prevent you from
performing a manual slew past this limit.) This
is useful when you have a camera or other
peripheral attached to the telescope—you can
prevent it from striking the telescope base.
• Min AOS (Acquisition of Signal) allows you enter
a value in degrees. This value represents the
altitude at which your telescope begins to slew
when acquiring a satellite track. This is useful
when you are observing satellites, but a tall tree
or building is obstructing the telescope. For
example, you might begin to track the satellite
at 15° altitude, instead of 5°. See Observing
Satellites, page 30, for more information about
satellites.
• Calibrate Motor if the telescope motors appear
to have a problem, use this option to retest the
motors before performing a Reset. This option is
also used if an AudioStar unit is moved between
telescopes, to match AudioStar to the new
telescope. To calibrate the motors, select this
option and press ENTER.
• High Precision if turned on, when looking for
a faint celestial object (i.e., a nebula or galaxy),
AudioStarrstslewstoanearbybrightstarand
displays “ENTER to Sync”. Center the star in the