Displaying Direction Indicators - American Dynamics SpeedDome Ultra VII Operator's Manual

Displaying Direction Indicators

Direction Indicators let you know the approximate pointing direction of the dome in
relation to an established point called "North". Directions for setting the North Position are
covered in Chapter 4.
When enabled, the Direction Indicators appear along the top edge of the display. In addition,
a tilt elevation indicator also appears along the left edge of the display. The value of the tilt
elevation indicator is relative to the "virtual horizon" of 0° tilt. By default, the display of
Direction Indicators is disabled.
Figure 5-3 illustrates the locations of the Direction Indicators on the display.
Figure 5-3: Screen locations for Direction Indicators
Tilt elevation/declination
from Horizontal
In this example, the current pointing position is 60° from North. The tilt elevation is 12°
above the virtual horizon. Panning to the left points the dome towards the Northeast. Panning
to the right points the dome towards the East. If you tilt below the virtual horizon, the
negative values will be displayed along the left edge (for example, –25). The elevation values
range from +25° to –90°.
If you pan to a position that corresponds to a well-known navigational heading, the label
corresponding to the heading appears in the center position. Figure 5-4 illustrates the
navigational headings and their corresponding degrees from North.
5-6
NE
12
60 E
SpeedDome Ultra VII Operator's Manual
Pointing direction
around the Pan axis
(0–359°)