Orion SKYVIEW 9884 - Manual (Page 5)

5
inserting the Diagonal and Eyepiece
The SkyView Pro 80mm ED EQ comes with a camera adapt-
er attached to its focuser drawtube. Loosen the two thumb
screws securing the camera adapter to the focuser drawtube
and remove the camera adapter (see Figure 4). Insert the
chrome barrel of the star diagonal into the focuser and secure
it with the thumb screws on the drawtube. The star diagonal
comes with a 1.25" adapter in it; this part allows for use of
1.25" barrel diameter eyepieces in the 2" diameter diago-
nal (see Figure 5). Make sure the 1.25" adapter is secure in
the diagonal by tightening the thumb screw on the diagonal.
Loosen the thumb screw on the 1.25" adapter and insert the
barrel of the 25mm eyepiece into it. Secure the eyepiece with
the thumb screw on the 1.25" adapter.
Your telescope is now completely assembled and should
appear as shown in Figure 1.
4. Balancing the telescope
To ensure smooth movement of the telescope on both axes
of the equatorial mount, it is imperative that the optical tube is
properly balanced. You will only need to balance the telescope
with respect to the right ascension (R.A.) axis; the telescope
should be balanced on the declination (Dec.) axis already if
you have properly centered the 1/4"-20 mounting block on the
optical tube relative to the tube rings.
1. Keeping one hand on the telescope optical tube, loosenthe
R.A. lock lever. Make sure the Dec. lock lever is locked, for
now. The telescope should now be able to rotate freely
about the right ascension axis. Rotate it until the counter-
weight shaft is parallel to the ground (i.e., horizontal).
2. Loosen the counterweight lock knob and slide the weight
along the shaft until it exactly counterbalances the tele-
Figure 4. Before installing the 2" star diagonal, you must remove
the camera adapter that comes attached to the telescope.
Focuser drawtube Thumb screws
Figure 5a. and 5b. To use 1.25" barrel diameter eyepieces,
the 1.25" adapter must be installed in the 2" star diagonal. 5b. To
use 2" eyepieces, remove the 1.25" adapter.
1.25" Barrel diameter eyepiece
5a. 5b.
Camera adapter
2" Star diagonal
1.25" Adapter
2" Barrel diameter eyepiece
(optional)
Finder scope
Finder scope bracket
Nylon
alignment
thumbscrews
Focus lock ring
Figure 3a. The 8x40 finder scope.
Tensioner
Figure 3b. Pull-back on the tensioner and slide the finder scope
into its bracket until the O-ring is seated in the bracket ring.