Celestron C8-S, C9-S Attaching the Declination Cable For GT Models Only, Powering the Telescope

Page 15
Figure 2-15

For Advanced GT users, it may be helpful to remove the front latitude adjustment screw completely. This will allow the mount to reach lower latitudes without the screw coming into contact with the R.A. motor assembly. To remove the latitude screw, first use the rear screw to raise the mount head all the way up. Then remove the front latitude screw completely. Now you should be able to manually move the mount head all the way to its lowest latitude. Now, using only the rear screw, raise the mount to your desired latitude.

Adjusting the Mount in Azimuth

For rough adjustments in azimuth, simply pick up the telescope and tripod and move it. For fine adjustments in azimuth:

1.Turn the azimuth adjustment knobs located on either side of the azimuth housing (see Fig 2-14). While standing behind the telescope, the knobs are on the front of the mount.

Turning the right adjustment knob clockwise moves the mount toward the right.

Turning the left adjustment knob clockwise moves the mount to the left.

Both screws push off of the peg on the tripod head, which means you may have to loosen one screw while tightening the other. The screw that holds the equatorial mount to the tripod may have to be loosened slightly.

Keep in mind that adjusting the mount is done during the polar alignment process only. Once polar aligned, the mount must NOT be moved. Pointing the telescope is done by moving the mount in right ascension and declination, as described earlier in this manual.

Attaching the Declination Cable (For GT Models Only)

The Advanced Series mount comes with a declination cable that connects from the R.A. motor drive electronic panel to the Dec motor drive. To attach the motor cable:

Locate the Declination cable and plug

 

 

 

 

 

 

 

 

 

one end of the cable into the port on

 

 

 

 

 

 

 

 

 

 

 

 

 

DEC Locking

 

 

 

the electronics panel labeled DEC

 

 

 

 

 

 

 

 

 

Clamp

 

Port and plug the other end of the

 

 

 

 

 

 

 

 

 

cable into the port located on the

 

 

 

 

 

 

 

 

 

declination motor drive (see Fig 2-15).

 

 

 

 

 

 

 

 

 

R.A. Locking

 

 

 

 

 

 

 

 

 

 

 

 

Declination Cable

 

 

 

 

 

Powering the Telescope

Clamp

 

 

 

 

Input Port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Advanced GT can be powered by the supplied

 

 

 

 

 

 

 

 

 

car battery adapter or optional 12v AC adapter. Use

 

 

 

 

 

 

 

 

 

 

 

 

Declination Cable

 

only adapters supplied by Celestron. Using any

 

 

 

 

 

 

 

Output Port

 

other adapter may damage the electronics or cause

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

the telescope not to operate properly, and will void

 

 

12v Power Input

 

your manufacturer's warranty.

 

 

 

 

 

 

 

 

 

 

 

On/Off Switch

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1.To power the telescope with the car battery adapter (or 12v AC adapter), simply plug

the round post into the 12v outlet on the

electronic panel and plug the other end into your cars cigarette lighter outlet or portable power supply (see Optional

Accessories). Note: to prevent the power cord from being accidentally pulled out, wrap the power cord around the strain relief located below the power switch.

2.Turn on the power to the telescope by flipping the switch, located on the electronics panel, to the "On" position.

15

Image 15
Contents Advanced Series Advanced Series GT Introduction Assembly Telescope Maintenance Page Advanced Series Advanced Series GT C9.25-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 Star Diagonal Installing the EyepieceInstalling the Finderscope Rear Cell Removing the Lens CapBalancing The Mount in R.A Moving the Telescope ManuallyAdjusting the Mount Adjusting the Mount in AltitudeBalancing The Mount in DEC Powering the Telescope Adjusting the Mount in AzimuthAttaching the Declination Cable For GT Models Only Advanced GT Hand Control Double Stars Hand Control OperationStartup Procedure Alignment ProceduresAuto Three-Star Align Auto AlignQuick-Align Last AlignmentRe-Alignment Finding Planets Object CatalogSelecting an Object Slewing to an ObjectRate Button Tour ModeConstellation Tour Direction ButtonsSetup Procedures Identify Precise GoTo Observing Tip Helpful Hint Utility Features Helpful Hint Advanced GT Image Orientation Focusing Aligning the FinderscopeCalculating Magnification General Observing Hints Determining Field of ViewCelestial Coordinate System Motion of the Stars Latitude Scales Definition Finding the North Celestial PoleDeclination Drift Method of Polar Alignment Observing the Sun Observing the MoonLunar Observing Hints Observing the PlanetsTransparency Solar Observing HintsObserving Deep Sky Objects Seeing ConditionsPage Short Exposure Prime Focus Photography Full Eyepiece ProjectionPlanet ISO Moon Mercury Venus Mars Jupiter Saturn Long Exposure Prime Focus PhotographyPage CCD Imaging Terrestrial PhotographyMetering Reducing VibrationAuto 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 Appendix D RS-232 Connection Additional RS232 Commands Appendix E Maps of Time Zones Page Page Page Page Page Page Page Celestron TWO Year Warranty
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C5-S, C9-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.

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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.

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