Instruments Telescopes Instruction Manual RCX400

Looking at or near the Sun will cause irreversible damage to your eye. Do not point this telescope at or near the

Sun. Do not look through the telescope as it is moving.

When the display readout is close to "1" (perhaps .99

or 1.01) and remains close to 1 while it is moving, it is

balanced. Press MODE. This stops the Balance

procedure.

Next move the telescope so that it is 90° perpendicular

to the Home Position. Select Balance RA once again

and press ENTER.

Repeat the same procedure in the perpendicular posi-

tion. Once again, move the weights to get the balance

readouts to get close to 1.

BALANCE THE DEC AXIS

DANGER!!! YOU WILL NEED 4 PEOPLE TO PERFORM

THIS PROCEDURE.

Next move the telescope so that it is 90° perpendicular

to the Home Position (see Fig. 36).

Select "Balance Dec" and press ENTER. The Dec axis

will move back and forth, like the RA axis did. Check

and see how close the Dec axis is from balance.

Press MODE. Move the telescope to the home position.

Position 4 people to hold onto the tube securely and

loosen the Dec lock knobs. See Fig. 37.

Move the OTA forward or backward within the female

dovetail track and tighten the lock knobs. Move the tele-

scope back to the position that is 90° perpendicular to

the Home Position, as shown in Fig. 36. Select "Balance

Dec" and press ENTER. Check and see how close the

Dec axis is from "1" in the Dec Balance menu.

Move the OTA back to the Home position. Move the OTA

forward or backward again. Continue this procedure,

moving back and forth between both the home (Fig.

38A) and the perpendicular position (Fig. 36), and

adjust the OTA until the telescope is balanced in this

axis. Make sure you tighten the lock knobs after each

adjustment of the OTA.

When the axis is finally balanced, press ENTER.

Tighten the lock knobs and turn the Dec Balance hard

stop bolt so that it butts up against the OTA plate—it

remembers your Dec Balance point. You should not

have to balance the telescope again unless you change

Perpendicular to home position

Home or 90° position

Dec Balance Hard Stop bolt