This section covers the assembly instructions for your Celestron Advanced Series Telescope (AST). Your AST telescope should be set up indoor the first time so that it is easy to identify the various parts and familiarize yourself with the correct assembly procedure before attempting it outdoor.

 

#11071 / 11072

#11025 / 11026

#11045 / 11046

 

C5-S

C8-S

C9.25-S

Diameter

127mm (5") Schmidt-Cassegrain

203mm (8") Schmidt-Cassegrain

235mm (9.25") Schmidt-Cassegrain

Focal Length

1250mm F/10

2032mm F/10

2350mm F/10

Eyepiece

25mm - 1.25" (50x)

25mm - 1.25" (81x)

25mm - 1.25" (94x)

Finderscope

6x30

6x30

6x30

Diagonal

90° - 1.25"

90° - 1.25"

90° - 1.25"

Mount

CG-5 Equatorial

CG-5 Equatorial

CG-5 Equatorial

Tripod

2" Stainless Steel

2" Stainless Steel

2" Stainless Steel

Software

The Sky L1

The Sky L1

The Sky L1

Counterweights

1-11lb

1-11lb

2-11lb

The Celestron Advanced Series telescopes are shipped in two boxes (three boxes for GT models). In separate boxes are the following:

•Optical Tube Assembly and Standard Accessories

•Equatorial Mount, Tripod, Hand Control, Counterweight(s) and Counterweight Bar (equatorial mount with motors comes in separate box for GT models)

Remove all the pieces from their respective boxes and place on a flat, clear work area. A large floor space is ideal. When setting up your Celestron telescope you must start with the tripod and work up from there. These instructions are laid out in the order each task must be performed.

Setting up the Tripod

The CG-5 tripod comes with an all metal center leg brace / accessory tray to give rock solid support to the mount.

The tripod comes fully assembled with a metal plate, called the tripod head, that holds the legs together at the top. In addition, there is a central rod that extends down from the tripod head that attaches the equatorial mount to the tripod. To set up the tripod:

1.Stand the tripod upright and pull the tripod legs apart until each leg is fully extended. The tripod will now stand by itself. Once the tripod is set up, you can adjust the height at which it stands.

2.Loosen the lever on the leg clamp so that the tripod leg can be adjusted.

3.Slide the center portion of the tripod leg away from the tripod head until it is at the desired height.

4.Tighten the levers on each leg clamp to hold the legs in place.

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Celestron C5-S, C8-S instruction manual Setting up the Tripod, C9.25-S
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C9.25-S, C5-S, C8-S specifications

Celestron, a leader in the field of amateur and professional astronomy, offers a range of telescopes ideal for both novices and experienced stargazers. Among their most celebrated models are the C8-S, C5-S, and C9.25-S, each designed with unique features and technologies that enhance the observational experience.

The Celestron C8-S is an iconic telescope known for its 8-inch aperture. This Schmidt-Cassegrain design combines a compact form factor with a powerful light-gathering capability, making it perfect for deep-sky observing. Its optical tube has a focal length of 2032mm, providing an excellent balance of wide field viewing and high magnification. The C8-S features Celestron's StarBright XLT optical coating, enhancing light transmission and contrast, ensuring that even faint objects are visible. With compatibility for various accessories and a sturdy mount, the C8-S stands as a versatile option for different observing styles.

Moving to the C5-S, this model boasts a 5-inch aperture while maintains a compact and portable design. It is particularly popular among travelers and casual astronomers who value convenience without compromising on quality. The C5-S also employs the Schmidt-Cassegrain design, providing sharp images and improved color correction. With its shorter focal length of 1250mm, the C5-S excels in both planetary and deep-sky observation. The telescope's lightweight build makes it easy to transport, while the integrated optical systems ensure a clear view of celestial objects.

The C9.25-S represents a step up in performance, featuring a 9.25-inch aperture that captures more light than its smaller counterparts. This telescope offers a versatile focal length of 2350mm, allowing for impressive high-power planetary views, as well as detailed observations of deep-sky objects. The C9.25-S utilizes a unique StarBright XLT coating and features advanced optics that minimize optical distortion, resulting in sharp, high-contrast images. It is equipped with a sturdy mount that ensures stability during extended observation sessions.

All three models are compatible with Celestron's advanced computer-driven mount systems, allowing for effortless tracking and alignment. With built-in features such as GoTo technology, users can easily locate thousands of celestial objects with the touch of a button. This combination of advanced optics, portability, and user-friendly technology makes the Celestron C8-S, C5-S, and C9.25-S excellent choices for anyone looking to explore the cosmos more deeply. Whether for casual stargazing or serious astronomical study, these telescopes deliver exceptional performance to meet a variety of needs.
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