Celestron C8-S, C5-S, C9.25-S Removing the Lens Cap, Moving the Telescope Manually, Rear Cell

Models: C5-S C8-S

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Rear Cell

Finderscope

Finder Bracket

Rubber O-ring

Three Nylon Tipped Thumbscrews (10-24x1/2")

Two Phillips Head Screws (8-32x1/2")

To install the finderscope:

1.

Attach the bracket to the optical tube. To do this,

 

Finderscope

 

 

 

 

place the curved portion of the bracket with the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

slot over the

two holes in the rear cell. The

 

 

 

 

 

 

 

 

 

 

Nylon

 

 

 

 

 

 

 

bracket should be oriented so that the rings that

 

 

 

 

 

 

 

Adjustment

 

 

 

hold the finder are over the telescope tube, not the

 

 

 

 

 

 

 

Screw

 

 

 

rear cell (see Fig 2-11). Start threading the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

screws in by hand and tighten fully with an Allen

 

 

 

 

 

 

 

 

 

wrench.

 

 

 

 

 

 

 

 

 

2.

Partially thread-in the three nylon-tipped

 

 

 

 

 

 

 

 

 

thumbscrews that hold the finder in place inside

 

 

 

 

 

 

 

 

 

 

 

 

Finder Bracket

 

the bracket.

Tighten the screws until the nylon

 

 

 

 

 

heads are flush with the inner diameter of the

 

 

 

 

Rear Cell

 

 

 

 

 

 

 

bracket ring. Do NOT thread them in completely

 

 

 

 

 

 

or they will interfere with the placement of the

 

Figure 2-11

 

finder. (Having the screws in place when the finder is installed

 

will be easier than trying to insert the screws after the finder has

 

 

 

 

 

 

 

 

been installed.)

 

 

 

 

 

 

 

3.Slide the rubber O-ring over the back of the finder (it will NOT fit over the objective end of the finder). It may need to be stretched a little. Once on the main body of the finder, slide it up about one inch from the end of the finder.

4.Rotate the finder until one cross hair is parallel to the R.A. axis and the other is parallel to the DEC axis.

5.Slide the eyepiece end of the finder into the front of the bracket.

6.Slightly tighten the three nylon tipped thumbscrews on the front ring of the bracket to hold the finder in place.

7.Once on, push the finder back until the O-ring is snug inside the back ring of the finder bracket.

8.Hand tighten the three nylon tipped thumbscrews until snug.

Removing the Lens Cap

The C5-S and C9.25-S have aluminum lens caps that slide on and off of the front of the telescope. The C8- S lens cap utilizes a bayonet-type locking mechanism to hold it in place. To remove the lens cap, hold the cover firmly and rotate the outer edge 1/2” counterclockwise and pull off.

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.

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Celestron C8-S, C5-S, C9.25-S instruction manual Removing the Lens Cap, Moving the Telescope Manually, Rear Cell