Celestron CGEM 800 HD Computerized Telescope CGEM Series Manual - Page 8

Attaching the Accessory Tray, Installing the Counterweight Bar, Installing the Counterweight

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Attaching the Accessory Tray 1. Slide the accessory tray over the central rod so that each arm of the tray is pushing against the inside of the tripod legs. 2. Thread the accessory tray knob on to the central rod and tighten. Installing the Counterweight Bar To properly balance the telescope, the mount comes with a counterweight bar and at least one counterweight (depending on model). To install the counterweight bar: 1. Locate the counterweight bar locking nut from the box containing the CGEM mount (see Fig 2-5). Mounting Knob Central Rod Accessory Tray 2. Thread the counterweight bar through the rounded end of locking nut until the threads pass all the way through and the locking nut can go no further. Accessory Tray Knob 3. Locate the opening in the equatorial mount on the DEC axis 4. Thread the counterweight bar into the opening until tight. Figure 2-4 5. Tighten the counterweight bar lock nut fully for added support. Once the bar is securely in place you are ready to attach the counterweight. Since the fully assembled telescope can be quite heavy, position the mount so that the polar axis is pointing towards north before the tube assembly and counterweights are attached. This will make the polar alignment procedure much easier. Installing the Counterweight Depending on which telescope model you have, you will receive either one, two or three counterweights. To install the counterweight(s): Counterweight Bar 1. Orient the mount so that the counterweight bar points toward the ground . Locking Nut 2. Remove the counterweight safety screw on the end of the counterweight bar (i.e., opposite the end that attaches to the mount). 3. Loosen the locking screw on the side of the counterweight. Counterweight Bar Locking Screw 4. Slide the counterweight onto the shaft (see Figure 2-5). 5. Tighten the locking screw on the side of the weight to hold the counterweight in place. 6. Replace the counterweight safety screw. Counterweight Safety Screw Figure 2-5 - Mount shown with two counterweights (CGEM 925 & 1100) 8

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8
Attaching the Accessory Tray
1.
Slide the accessory tray over the central rod so that each arm of the tray is pushing against the inside of the tripod legs.
2.
Thread the accessory tray knob on to the central rod and tighten.
Installing the Counterweight Bar
To properly balance the telescope, the mount comes
with
a
counterweight
bar
and
at
least
one
counterweight (depending on model).
To install the
counterweight bar:
1.
Locate the counterweight bar locking nut from the box
containing the CGEM mount (see Fig 2-5).
2.
Thread the counterweight bar through the rounded end
of locking nut until the threads pass all the way
through and the locking nut can go no further.
3.
Locate the opening in the equatorial mount on the
DEC axis
4.
Thread the counterweight bar into the opening until tight.
5.
Tighten the counterweight bar lock nut fully for added support.
Once the bar is securely in place you are ready to attach the counterweight.
Since the fully assembled telescope can be quite heavy, position the mount so that the polar axis is pointing towards
north before the tube assembly and counterweights are attached.
This will make the polar alignment procedure much
easier.
Installing the Counterweight
Depending on which telescope model you have, you will receive either one, two or three counterweights.
To install the
counterweight(s):
1.
Orient the mount so that the counterweight bar points toward the ground .
2.
Remove the counterweight safety screw on the end of the counterweight bar (i.e.,
opposite the end that attaches to the mount).
3.
Loosen the locking screw on the side of the counterweight.
4.
Slide the counterweight onto the shaft (see Figure 2-5).
5.
Tighten the locking
screw on the side of the weight to hold the counterweight in
place.
6.
Replace the counterweight safety screw.
Figure 2-4
Mounting Knob
Central Rod
Accessory Tray
Accessory
Tray Knob
Figure 2-5 – Mount shown with two
counterweights (CGEM 925 & 1100)
Counterweight
Safety Screw
Counterweight
Bar
Locking Screw
Counterweight Bar
Locking Nut