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58
Equatorial mode Polar Alignment
Alt-Az mode Polar Alignment
Then connect the mount to the device by pressing the “
Connect
” button at the
bottom of the planetarium application screen as shown in Figure 5.1 below.
2.
After few seconds the “Connect” button will change to read “
Disconnect
”. A chime
will sound and the telescope FOV pointer position (CCD or eyepiece) on the
SkySafari
screen will appear exactly at coordinates RA=0, DEC=0 if the mount is
in Equatorial mode or with the coordinates of the North Pole if the mount is in Alt-
Az mode. The commands to the right of “Disconnect”, i.e. “
GoTo
”, “
Align
” and
“
Lock
” will become active .
3.
To correctly start the navigation operations in Equatorial Mode, it is necessary to
transmit to the mount the coordinates related to the “Home” position because, as
seen, when the mount is powered on,
StarGo is unaware of these coordinates.
In case of Equatorial mode, therefore, after the initial connection with SkySafari,
the very first sync action to be performed is to transmit to the StarGO the point
where the mount is really pointing at that moment (i.e. the Celestial Pole). This
operation consists of performing an initial sync, using the “Align” function of
SkySafari. Position the cursor on a star on the meridian and close to the southern
horizon, without moving the mount from its Home position. This is equivalent to
performing the “Sync Home Position” using the StarGO software as described in
section 4.2.5.
The following sequence of three SkySafari screenshots, taken with the mount in
equatorial mode, is useful to understand the event sequence and its results:
They were taken
a) just after the connection has occurred (Figure 5.1), b) at the
moment of syncing to a near South Meridian star (Figure 5.2) and c) after the
“Align” function is carried out (representing the North Celestial Pole area, Figure
5.3).