Celestron C9.25-S, C8-S, C5-S instruction manual Introduction Assembly

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INTRODUCTION

4

Warning

4

ASSEMBLY

5

Setting up the Tripod

7

Attaching the Equatorial Mount

8

Attaching the Center Leg Brace

8

Installing the Counterweight Bar

8

Installing the Counterweight

9

Attaching the Hand Control Holder

9

Attaching the Slow Motion Knobs

9

Attaching the Optical Tube to the Mount

10

Attaching the Visual Back

10

Installing the Star Diagonal

11

Installing the Eyepiece

11

Installing the Finderscope

11

Removing the Lens Cap

12

Moving the Telescope Manually

12

Balancing The Mount in R.A

13

Balancing The Mount in DEC

13

Adjusting the Mount

14

Adjusting the Mount in Altitude

14

Adjusting the Mount in Azimuth

14

Attaching the Declination Cables (For GT Models Only)

15

Powering the Telescope

15

HAND CONTROL

16

Hand Control Operation

17

Alignment Procedures

18

Startup Procedure

18

Auto Align

19

Auto Three-Star Align

19

Quick-Align

20

Last Alignment

20

Re-Alignment

20

Object Catalog

21

Selecting an Object

21

Slewing to an Object

21

Finding Planets

21

Tour Mode

22

Constellation Tour

22

Direction Buttons

22

Rate Button

22

Setup Procedures

23

Tracking Mode

23

Tracking Rate

23

Date/Time

23

User Defined Objects

23

Get RA/DEC

24

Goto R.A/Dec

24

Identify

24

Precise GoTo

25

Scope Setup Features

25

Setup Time-Site

25

Anti-backlash

25

Filter Limits

25

Direction Buttons

26

Goto Approach

26

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Contents Advanced Series Advanced Series GT Introduction Assembly Telescope Maintenance Page Advanced Series Advanced C8-SGT Shown Autoguider PortSetting up the Tripod C9.25-SAttaching the Center Leg Brace Installing the Counterweight BarAttaching the Equatorial Mount Installing the Counterweight Attaching the Hand Control Holder Advanced GT Models OnlyAttaching the Optical Tube to the Mount Attaching the Visual BackInstalling the Finderscope Installing the Star DiagonalInstalling the Eyepiece EyepieceRear Cell Removing the Lens CapMoving the Telescope Manually Balancing The Mount in R.A Balancing The Mount in DECAdjusting the Mount in Azimuth Adjusting the MountAdjusting the Mount in Altitude Powering the Telescope Attaching the Declination Cables For GT Models OnlyAdvanced GT Hand Control Hand Control Operation Alignment Procedures Startup ProcedureAuto Align Auto Three-Star AlignRe-Alignment Quick-AlignLast Alignment Slewing to an Object Object CatalogSelecting an Object Finding PlanetsDirection Buttons Tour ModeConstellation Tour Rate ButtonSetup Procedures Identify Precise GoTo Observing Tip Helpful Hint Utility Features Helpful Hint Advanced GT Celestial Coordinate System Motion of the Stars Latitude Scales Pointing at PolarisFinding the North Celestial Pole Declination Drift Method of Polar Alignment Observing the Planets Observing the MoonLunar Observing Hints Observing the SunSeeing Conditions Solar Observing HintsObserving Deep Sky Objects TransparencyPage Short Exposure Prime Focus Photography Eyepiece Projection FullLong Exposure Prime Focus Photography Planet ISO Moon Mercury Venus Mars Jupiter SaturnPage Reducing Vibration Terrestrial PhotographyMetering CCD ImagingAuto Guiding Care and Cleaning of the Optics CollimationCollimated 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 Communication ProtocolAdditional RS232 Commands Reset The Position Of Azm Or AltAppendix 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.