Attaching The Optical Tube - Celestron 1510 Instruction Manual

azimuth adjustment bolts. It may be necessary to partially unscrew the bolts to allow the metal peg to
fully extend into the altazimuth housing.
4. Tighten the knob located on the underside of the tripod head. This will hold the equatorial mount
firmly to the tripod head.
Attaching the Accessory Tray
Next, attach the accessory tray to the tripod. Locate the accessory tray and the three wingnut screws to
attach the tray.
1. Place the accessory tray on the center support brace of the tripod and align the holes on the tray with
those on the support brace.
2. Insert the wingnut screws through the bottom of the tripod support brace and thread them into the
accessory tray holes.
With the accessory tray in place, the tripod will be much more stable, making it easier to attach the
telescope.
Installing the Counterweight Bar
With the mount securely in place, you are ready to attach some of the accessories (the telescope
tube will be added last). Start with the Counterweight Bar and Counterweights. Used to balance
the telescope, the Counterweight Bar attaches to the opposite side of the mount as the telescope.
To install the Counterweight Bar:
Retract the counterweight bar lock nut by turning it counterclockwise. This will expose the threads
on the end of the Counterweight Bar.
Thread the Counterweight Bar into the mount completely. It threads into the mount opposite the
telescope.
1. Tighten the lock nut fully for added support.
2. The Counterweight Bar is now installed.
3. Installing the Counterweights
With the counterweight bar in place, you are ready to attach the counterweights.
1. Remove the safety thumbscrew on the end of the counterweight bar.
2. Loosen the counterweight lock screw (on the counterweight itself) so that the central hole
of the counterweight is unobstructed.
3. Slide the counterweight onto the counterweight bar. Move it high enough to allow room
for the second weight (if included).
4. Tighten the counterweight lock screw to hold it in position.
5. Repeat this process for the second weight.
6. Replace the thumbscrew on the end of the counterweight bar. The thumbscrew will
prevent the counterweight(s) from sliding off the bar should they ever become loose.

Attaching the Optical Tube

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