Orion 9884 instruction manual Balancing the Telescope, Inserting the Diagonal and Eyepiece

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Finder scope bracket

Finder scope

Focus lock ring

Figure 3a. The 8x40 finder scope.

Nylon alignment thumbscrews

Tensioner

Focuser drawtube

Thumb screws

Camera adapter

Figure 4. Before installing the 2" star diagonal, you must remove the camera adapter that comes attached to the telescope.

1.25" Barrel diameter eyepiece 2" Barrel diameter eyepiece

1.25" Adapter (optional)

 

 

 

 

5a.

2" Star diagonal

5b.

 

 

Figure 5a. and 5b. To use 1.25" barrel diameter eyepieces, the 1.25" adapter must be installed in the 2" star diagonal. 5b. To use 2" eyepieces, remove the 1.25" adapter.

Your telescope is now completely assembled and should appear as shown in Figure 1.

Figure 3b. Pullback on the tensioner and slide the finder scope into its bracket until the O-ring is seated in the bracket ring.

Inserting the Diagonal and Eyepiece

The SkyView Pro 80mm ED EQ comes with a camera adapt- er attached to its focuser drawtube. Loosen the two thumb screws securing the camera adapter to the focuser drawtube and remove the camera adapter (see Figure 4). Insert the chrome barrel of the star diagonal into the focuser and secure it with the thumb screws on the drawtube. The star diagonal comes with a 1.25" adapter in it; this part allows for use of 1.25" barrel diameter eyepieces in the 2" diameter diago- nal (see Figure 5). Make sure the 1.25" adapter is secure in the diagonal by tightening the thumb screw on the diagonal. Loosen the thumb screw on the 1.25" adapter and insert the barrel of the 25mm eyepiece into it. Secure the eyepiece with the thumb screw on the 1.25" adapter.

4. Balancing the Telescope

To ensure smooth movement of the telescope on both axes of the equatorial mount, it is imperative that the optical tube is properly balanced.You will only need to balance the telescope with respect to the right ascension (R.A.) axis; the telescope should be balanced on the declination (Dec.) axis already if you have properly centered the 1/4"-20 mounting block on the optical tube relative to the tube rings.

1.Keeping one hand on the telescope optical tube, loosenthe R.A. lock lever. Make sure the Dec. lock lever is locked, for now. The telescope should now be able to rotate freely about the right ascension axis. Rotate it until the counter- weight shaft is parallel to the ground (i.e., horizontal).

2.Loosen the counterweight lock knob and slide the weight along the shaft until it exactly counterbalances the tele-

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Contents Orion Latitude adjustment Bolts Tripod support tray Parts List Table of ContentsAssembly UnpackingInstalling the Finder Scope Inserting the Diagonal and Eyepiece Balancing the TelescopeViewing with Eyeglasses Using Your TelescopeFocusing the Telescope Aligning the Finder Scope Focusing the Finder ScopeMagnification & Eyepieces 600 mm = 25 mmPolar Alignment Setting Up and Using the Equatorial MountOptional polar axis finder scope Polar Alignment Using an Optional Polar Axis Finder ScopeTracking Celestial Objects Calibrating the Declination Setting Circle Understanding the Setting CirclesCalibrating the Right Ascension Setting Circle Finding Objects With the Setting CirclesConfused About Pointing the Telescope? Astronomical ObservingSite Selection Seeing and TransparencyLet Your Eyes Dark-Adapt Cooling the TelescopeEyepiece Selection Astronomical ObjectsSun How to Find Deep-sky Objects StarhoppingPlanets StarsAstrophotography Terrestrial ObservingPiggyback Photography Moon PhotographyPlanetary Photography Cleaning Lenses Care and MaintenanceSpecifications One-Year Limited Warranty