Celestron C8-S, C5-S, C9.25-S instruction manual Installing the Counterweight

Page 9

Installing the Counterweight

Depending on which AST telescope you have, you will receive either one or two counterweights. To install the counterweight(s):

1.Orient the mount so that the counterweight bar points toward the ground .

 

 

 

Counterweight

2.

Remove the counterweight safety screw on the end of the

 

 

Bar

 

 

 

 

counterweight bar (i.e., opposite the end that attaches to the mount).

 

 

 

 

 

 

Locking Screw

 

 

 

 

 

 

3.

Loosen the locking screw on the side of the counterweight.

 

 

 

 

 

 

 

 

4.

Slide the counterweight onto the shaft (see Figure 2-5).

 

 

 

5.

Tighten the locking screw on the side of the weight to hold the

 

 

Counterweight

 

 

counterweight in place.

 

 

 

 

Safety Screw

6.

Replace the counterweight safety screw.

Attaching the Hand Control Holder (Advanced GT Models Only)

Figure 2-5

The Advanced GT telescope models come with a hand control holder to place the computerized hand control. The hand control holder comes in two pieces: the leg clamp that snaps around the tripod leg and the holder which attaches to the leg clamp. To attach the hand control holder:

1.Place the leg clamp up against one of the tripod legs and press firmly until the clamp wraps around the leg.

2.Slide the back of the hand control holder downward into the channel on the front of the legs clamp (see Fig 2-6) until it snaps into place.

Attaching the Slow Motion Knobs (For Non-GT Models Only)

Hand Control

Holder

Leg Clamp

Figure 2-6

The Advanced Series (non-GT models) comes with two slow motion control knobs that allows you to make fine pointing adjustments to the telescope in

both R.A. and Declination. To install the knobs:

1.Locate the hard plastic shell under the R.A. shafts.

2.Remove either of the two oval tabs by pulling tightly.

3.Line up the flat area on the inner portion of the R.A. slow motion knob with the flat area on the R.A. shaft (see Fig 2-7).

4.Slide the R.A. slow motion knob onto the R.A. shaft.

The knob is a tension fit, so sliding it on holds it in place. As mentioned above, there are two R.A.

Figure 2-7

9

Image 9
Contents Advanced Series Advanced Series GT Introduction Assembly Telescope Maintenance Page Advanced Series Autoguider Port Advanced C8-SGT ShownC9.25-S Setting up the TripodInstalling the Counterweight Bar Attaching the Equatorial MountAttaching the Center Leg Brace Attaching the Hand Control Holder Advanced GT Models Only Installing the CounterweightAttaching the Visual Back Attaching the Optical Tube to the MountInstalling the Eyepiece Installing the Star DiagonalInstalling the Finderscope EyepieceRemoving the Lens Cap Moving the Telescope ManuallyRear Cell Balancing The Mount in DEC Balancing The Mount in R.AAdjusting the Mount Adjusting the Mount in AltitudeAdjusting the Mount in Azimuth Attaching the Declination Cables For GT Models Only Powering the TelescopeAdvanced GT Hand Control Hand Control Operation Startup Procedure Alignment ProceduresAuto Three-Star Align Auto AlignQuick-Align Last AlignmentRe-Alignment Selecting an Object Object CatalogSlewing to an Object Finding PlanetsConstellation Tour Tour ModeDirection Buttons Rate ButtonSetup Procedures Identify Precise GoTo Observing Tip Helpful Hint Utility Features Helpful Hint Advanced GT Celestial Coordinate System Motion of the Stars Pointing at Polaris Latitude ScalesFinding the North Celestial Pole Declination Drift Method of Polar Alignment Lunar Observing Hints Observing the MoonObserving the Planets Observing the SunObserving Deep Sky Objects Solar Observing HintsSeeing Conditions TransparencyPage Short Exposure Prime Focus Photography Full Eyepiece ProjectionPlanet ISO Moon Mercury Venus Mars Jupiter Saturn Long Exposure Prime Focus PhotographyPage Metering Terrestrial PhotographyReducing Vibration CCD ImagingAuto Guiding Collimation Care and Cleaning of the OpticsCollimated telescope Should appear Symmetrical with Page Page Page Appendix a Technical Specifications Appendix B Glossary of Terms Page Eclipsing or obscuring the brightness of the star Appendix C Longitudes Latitudes Georgia Minnesota Rhode Island Canada Communication Protocol Appendix D RS-232 ConnectionReset The Position Of Azm Or Alt Additional RS232 CommandsAppendix E Maps of Time Zones Page Page Page Page Page Page Page Celestron TWO Year Warranty
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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.