Nylon

Eyepiece

 

 

 

alignment

 

 

 

 

 

 

 

Objective

Finder

thumbscrew

 

 

(2)

 

 

lens cell

scope

 

 

 

 

 

 

 

bracket

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct-Image

Focusing

prism housing

lock ring

Tensioner

 

 

Figure 12a. The 9x50 right-angle correct-image finder scope and bracket (6x30 for the XT6i).

Knurled thumbscrew

Finder scope bracket

Dovetail holder

 

Figure 12b. Inserting the finder scope into its dovetail holder.

The CorrecTension system is now installed. If you wish to remove the optical tube from the base, you will first need to unthread and remove both the knobs. Once the optical tube is removed from the base, thread the knobs back into the altitude bearings so you do not lose them.

Installing the Finder Scope

SkyQuest IntelliScope Dobsonians come with a high-quality, large-aperture 9x50 (6x30 for the XT6) right-angle correct- image (RACI) achromatic crosshair finder scope (Figure 12a) as standard equipment. This greatly aids in finding objects to view in the night sky.

The finder scope arrives pre-installed in its bracket, but must be placed into the dovetail holder on the telescope tube. Insert the base of the finder scope into the dovetail holder located adjacent to the focuser (Figure 12b). Lock the bracket into position by tightening the knurled thumbscrew on the dovetail holder.

2" eyepiece adapter

1.25" eyepiece adapter

 

Focus knobs

Focus lock

thumbscrew

Focusing tension adjustment set screw

Figure 13a. The 2" Crayford focuser of the SkyQuest XT8i, XT10i, and XT12i.

Focus knobs

Focus lock thumbscrew

Focusing tension adjustment set screws

Figure 13b. The 1.25" rack-and-pinion focuser of the SkyQuest XT6i.

Inserting an Eyepiece

The final step in the assembly process is to insert an eye- piece into the telescope’s focuser. First, take the cover cap off the focuser drawtube.

For the XT8i, XT10i, and XT12i: Loosen the thumbscrew on the 1.25" eyepiece adapter (Figure 13a). Do not loosen the two thumbscrews on the 2" eyepiece adapter. Insert the supplied 25mm Sirius Plössl eyepiece, then secure it by retightening the thumbscrew on the 1.25" eyepiece adapter. The other eyepiece can be placed in the eyepiece rack until it is needed.

For the XT6i: Loosen the two thumbscrews on the eyepiece holder and insert the 25mm Sirius Plössl eyepiece. Then secure it in place with the thumbscrews (Figure 13b). The other eyepiece can be placed in the eyepiece rack until it is needed.

The basic assembly of your SkyQuest IntelliScope Dobsonian is now complete. It should appear as shown in Figure 1. The

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Orion 10018 XT8i, 10026 XT6i, 10020 XT12i, 10019 XT10i instruction manual Installing the Finder Scope, Inserting an Eyepiece
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10019 XT10i, 10018 XT8i, 10020 XT12i, 10026 XT6i specifications

The Orion XT series of telescopes, including the XT12i, XT8i, XT6i, and XT10i, are highly regarded for their quality and performance, making them popular choices among astronomy enthusiasts. Each model in the XT line features a Dobsonian design, renowned for its simplicity and ease of use, allowing users to enjoy stargazing without the complexities associated with other types of telescopes.

Starting with the Orion XT12i, this model boasts a 12-inch aperture that delivers exceptional light-gathering power, ideal for deep-sky observations. Equipped with the IntelliScope computer navigation system, users can enjoy the convenience of locating over 14,000 celestial objects with ease. The oversized 2-inch focuser accommodates a range of eyepieces and accessories, while the solid, sturdy base ensures stability during observation.

Next is the Orion XT10i, featuring a 10-inch aperture designed for delivering stunning views of galaxies, nebulae, and star clusters. Like its larger counterpart, the XT10i also comes with the IntelliScope system, allowing for simple object location. Its compact design makes it an ideal choice for both backyard astronomy and portable stargazing trips. The XT10i includes a rich set of accessories, including a 1.25-inch eyepiece, to enhance the observing experience.

The Orion XT8i brings a 8-inch aperture to those seeking a balance between performance and portability. This telescope offers impressive light-gathering capabilities while remaining lightweight enough for easy transport. The IntelliScope feature enables users to navigate easily between celestial objects. It is an excellent choice for both beginners and experienced users looking for a versatile telescope.

Finally, the Orion XT6i features a 6-inch aperture, making it an optimal choice for those new to astronomy. Despite its smaller size, the XT6i still offers excellent views of the night sky and is highly portable. With the IntelliScope system, users can quickly find and explore various celestial objects. Its user-friendly design and setup make it a perfect introduction to the world of astronomy for novices.

In summary, the Orion XT series of telescopes presents a diverse range of options suitable for astronomers of all experience levels. They combine innovative technologies like the IntelliScope navigation system with solid construction and impressive optics, ensuring memorable astronomical experiences. Whether you're delving into deep-sky exploration or enjoying casual stargazing, the XT line has a model that fits your needs.
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