Celestron Advanced VX Serie Manuel D'instructions page 8

To keep the empty threads clean, always replace the
Allen-key screws into the set of holes you are not using
Moving the Telescope Manually
In order to properly balance your telescope, you will need to
move your telescope manually at various portions of the sky
to observe different objects To make rough adjustments,
loosen the R A and DEC clutch knobs slightly and move
the telescope in the desired direction
Both the R A and DEC axis have lock levers to clutch down
each axis of the telescope To loosen the clutches on the
telescope, rotate the lock levers counterclockwise
Balancing the Mount in R.A.
To eliminate undue stress on the mount, the telescope
should be properly balanced around the polar axis Proper
balancing is crucial for accurate tracking To balance
the mount:
1 Verify that the telescope is securely attached to the
telescope mounting platform
2 Loosen the R A lock lever and position the telescope
off to one side of the mount The counterweight bar will
extend horizontally on the opposite side of the mount
3 Release the telescope — GRADUALLY — to see which
way the telescope "rolls "
4 Loosen the set screws on the side of the counterweight,
so it can be moved the length of the counterweight bar
5 Move the counterweight to a point where it balances the
ENGLISH
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telescope (i e , the telescope remains stationary when
the R A clutch knobs are loose)
6 Tighten the screw on the counterweight to hold it
in place
Tip: While the above instructions describe a perfect balance
arrangement, there should be a SLIGHT imbalance to
ensure the best possible tracking When the scope is
on the west side of the mount the counterweight should
be slightly imbalanced to the counterweight bar side
And when the tube is on the east side of the mount,
there should be a slight imbalance toward the telescope
side This is done so that the worm gear is pushing
against a slight load The amount of the imbalance
is very slight When taking astroimages, this balance
process can be done for the specific area at which
Declination
the telescope is pointing to further optimize
Clutch Lever
tracking accuracy
Balancing the Mount in DEC
Although the mount does not track in declination, the telescope
RA Clutch
should also be balanced in this axis to prevent any sudden
Lever
motions when the DEC lock lever is loose To balance the
telescope in DEC:
1 Loosen the R A clutch lock lever and rotate the telescope
so that it is on one side of the mount (i e , as described in
the previous section on "Balancing the Mount in R A ")
2 Tighten the R A lock lever to hold the telescope in place
3 Loosen the DEC clutch lock lever and rotate the
telescope until the tube is parallel to the ground
4 Release the tube — GRADUALLY — to see which way it
rotates around the declination axis DO NOT LET GO
OF THE TELESCOPE TUBE COMPLETELY!
5 Slightly loosen the knobs that hold the telescope to
the mounting platform and slide the telescope either
forward or backward until it remains stationary when the
DEC clutch is loose Do NOT let go of the telescope
tube while the knob on the mounting platform is loose
It may be necessary to rotate the telescope so that the
counterweight bar is pointing down before loosening the
mounting platform screw
6 Tighten the knobs on the telescope mounting platform
to hold the telescope in place