Vixen Starbook-S User Manual page 22

What is SCOPE MODE?
In SCOPE MODE, as you slew the telescope, the star chart on the screen moves along with the
telescope as its direction changes. SCOPE MODE is displayed as soon as you begin automatic
slewing after a GOTO command. Use this mode when you want to fine tune the pointing of the
telescope.
(3) SCOPE MODE appears on screen after initialization when the power on the STARBOOK-S is
turned on. Change it to CHART MODE by pressing the Chart key. CHART should now appear
at the upper left of the screen as shown below.
Center the celestial object that you wish to use as a reference point on the screen with the
keys. Using the Zoom+ or Zoom- keys to change the scale of the star chart on the screen
will help you to center your reference object correctly. Refer to Hint 2, Hint 3.
Reference objects may also be selected from the Object Menu (see page 40).
Hint 2 The zoom+ key enlarges the star chart on the screen. In CHART MODE it allows you to
scroll the chart slowly in a small area enlarged so that you can center a reference object on screen
more accurately. In SCOPE MODE it allows you to point the telescope more precisely.
The Zoom- key reduces the star chart on the screen. It allows you to scroll the screen quickly
over a large area. The motor speed / zoom level indicator is visible at the lower left of the screen.
Hint 3 When you center a reference object, which is shown on the screen, in the field of view of
your eyepiece, try to center it as precisely as possible. This will increase the accuracy of the
system.
What is CHART MODE?
Unlike SCOPE MODE, the telescope is not linked to the screen in CHART MODE. Search for
objects in CHART MODE before starting automatic slewing. You may also use this mode when
you simply wish to refer to a star chart.
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