Vixen Sphinx SXP - Manual (Page 29)

Chapter 4 AUTOMATIC GOTO SLEWING
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Your first Go-To slewing may not bring the alignment star in the main telescope's field of
view but should appear in the finder scope.
Here, center Aldebaran in the telescope's field of view as an example with the following
procedure.
Move the telescope with the • • • direction keys so that you bring Aldebaran to
the center of the finder scope's field of view. Magnifying the star chart with the zoom key
will slow the motion of the telescope and thus allow you to make finer adjustments of the
position.
Bring Aldebaran in the center of the finder scope's field of view and look for it in the
telescope's field of view.
Note: Aldebaran will be away from the center of the target circles on the screen as you move
the telescope to look for Aldebaran in the field of view of the telescope. This is caused by a
difference between the actual position of Aldebaran viewed and the location of the same star
in the database of the STAR BOOK TEN. It is a normal behavior. In this stage of the star
alignment, the telescope's field of view corresponds to a correct orientation of the telescope
and disregards the position of the target on the screen.
After you place the target in the finder scope's field of view, use an eyepiece with low
magnification (A larger number eyepiece in millimeters such as a NLV20mm) to bring it in
the field of view of the main telescope. Then, change to an eyepiece with high magnification
(A smaller number eyepiece in millimeters such as a NLV5mm) so that you can center the
target accurately.
Press the key on the STAR BOOK TEN as you have centered Aldebaran in the field of
view of the telescope successfully.
The dialog box appears to confirm the star
alignment with Aldebaran. Choose OK with
the or key, and press the key.
The fist star alignment has been completed.
The target Aldebaran comes to the center
cross of the target circles on the screen.
Proceed to the second star alignment with a different star to increase the pointing accuracy of the telescope. The more star alignments you
have, the better your targets are centered. (You can perform a maximum 20 alignment points.)
Field of view of the
Telescope
Finder scope's field of view
Field of view of the
Telescope
Finder scope's field of view
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