Celestron C8-NGT, C10-N manual Appendix a Technical Specifications

Page 51

Appendix A – Technical Specifications

Advanced Series

31061 / 31062

 

11047 / 11048

 

 

 

C8-N

 

C10-N

 

Specifications:

 

 

 

 

 

Optical Design

200mm (8.0") reflector

 

254mm (10") reflector

 

Focal Length

1000mm F/5 Parabola

 

1200mm F/4.7 Parabola

 

Finderscope

 

9x50

 

9x50

 

Mount

CG-5 Equatorial

 

CG-5 Equatorial

 

Eyepiece

20mm - 1.25" (50x)

 

20mm – 1.25" (60x)

 

Accessory tray

 

Yes

 

Yes

 

Tripod

2" Stainless Steel

 

2" Stainless Steel

 

Technical Specs

 

 

 

 

 

Highest Useful Magnification

 

480x

 

600x

 

Lowest Useful Magnification

 

29x

 

36x

 

Limiting Stellar Magnitude

14

 

14.5

 

Resolution: Rayleigh

.69 arc seconds

 

.54 arc seconds

 

Dawes Limit

.58 arc seconds

 

.46 arc seconds

 

Photographic Resolution

 

400 line/mm

 

425 line/mm

 

Light Gathering Power

843x unaided eye

 

1316x unaided eye

 

Field of View: standard eyepiece

 

.83º

 

Linear FOV (@1000 yds)

 

52.5 ft.

 

43.8 ft.

 

Optical Coatings - Standard

Aluminum Coating

 

Aluminum Coating

 

Secondary Mirror Obstruction

2.2"

 

2.3"

 

by Area

8%

 

5%

 

by Diameter

28%

 

23%

 

Optical tube length

 

37 inches

 

45 inches

 

Telescope Weight

 

78 lbs

 

93 lbs

 

 

 

 

 

 

 

Advanced GT

 

 

 

 

 

 

 

 

 

 

 

Additional Specifications

 

 

 

 

 

Hand Control

 

Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons

Motor: Type

 

DC Servo motors with encoders, both axes

Max Slew Speed

 

3º/second

 

 

 

Software Precision

 

24bit, 0.08 arc sec calculation

Hand Control Ports

 

RS-232 communication port on hand control

Motor Ports

 

Aux Port, Autoguide Ports

Tracking Rates

 

Sidereal, Solar and

Lunar

Tracking Modes

 

EQ North & EQ South

Alignment Procedures

 

AutoAlign, 3-Star Alignment, Quick Align, Last Align

Database

 

40,000+ objects, 400 user defined programmable objects.

 

Enhanced information on over 200 objects

Complete Revised NGC Catalog

 

7,840

 

 

 

Complete Messier Catalog

 

110

 

 

 

Complete IC Catalog

 

5,386

 

 

 

Complete Caldwell

 

109

 

 

 

Abell Galaxies

 

2,712

 

 

 

Solar System objects

 

9

 

 

 

Famous Asterisms

 

20

 

 

 

Selected CCD Imaging Objects

 

25

 

 

 

Selected SAO Stars

 

29,500

 

 

 

Total Object Database

 

45,492

 

 

 

51

Image 51
Contents Advanced Series Advanced Series GT Precise GoTo Scope Setup Features Telescope Maintenance Page Advanced Series Newtonian Advanced Series GT Newtonian Attaching the Equatorial Mount Setting up the TripodAttaching the Center Leg Brace Installing the Counterweight BarAttaching the Hand Control Holder Advanced GT Models Only Installing the CounterweightAttaching the Telescope Tube to the Mount Installing the Finderscope Installing the EyepiecesTelescope Telescope Tube Completely Balancing the Tube in R.AAdjusting the Mount in Altitude Adjusting the MountAttaching the Declination Cable 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 CatalogTour Mode Nine available slew speeds Setup ProceduresIdentify Scope Setup Features 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 Pointing at Polaris Latitude ScalesFinding the North Celestial Pole Declination Drift Method of Polar Alignment Observing the Sun Observing the MoonLunar Observing Hints Observing the PlanetsTransparency Solar Observing HintsObserving Deep Sky Objects Seeing ConditionsPage Piggyback Short Exposure Prime Focus Photography Terrestrial Photography MeteringReducing Vibration Auto Guiding Care and Cleaning of the Optics CollimationAligning the Secondary Mirror Aligning the Primary Mirror Night Time Star Collimating Page 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 Reset 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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Manual 71 pages 692 b

C10-N, C8-NGT, C8-N specifications

The Celestron C8-NGT, C8-N, and C10-N telescopes represent a range of superior astronomical instruments that cater to both novice and experienced astronomers alike. Among these, the C8-NGT combines the advanced features of a computerized telescope with the simplicity of a Newtonian design. Its 8-inch aperture allows for impressive light-gathering capability, making it ideal for observing distant galaxies, star clusters, and nebulae. The GoTo mount enhances usability, enabling users to locate celestial objects effortlessly with the push of a button.

The C8-N, also featuring an 8-inch aperture, stands out with its open tube design that provides maximum airflow and minimizes thermal issues, ensuring optimal performance. The scope is designed with user-friendly adjustments and a sturdy equatorial mount, allowing for smooth tracking of celestial objects. Its high-quality optics provide sharp images and incredible clarity, making it suitable for both planetary and deep-sky observations.

On the other hand, the C10-N is the largest in this lineup, boasting a 10-inch aperture that dramatically enhances its light-gathering ability. This larger size makes the C10-N a powerhouse for serious astronomers looking to explore fainter objects and intricate details within astronomical features. Like the C8-N, it employs a Newtonian reflector design, allowing for a compact and manageable profile, while still providing stunning visuals across a range of celestial bodies.

All three telescopes incorporate Celestron's commitment to creating durable, robust, and user-friendly systems. They utilize premium quality glass and optics, which are coated to improve light transmission and provide high-contrast images. Additionally, they are designed with ease of assembly and portability in mind, catering to astronomers who enjoy observing in various locations.

The Celestron C8-NGT, C8-N, and C10-N serve as excellent options for anyone looking to deepen their astronomical pursuits, offering a blend of advanced technology, high-quality optical performance, and user-friendly features. Whether you're a beginner eager to peer into the wonders of the universe or an experienced observer at the peak of your skills, these telescopes offer a remarkable means to expand your cosmic horizons. With precision engineering and thoughtful design, Celestron continues to be a trusted name in the world of astronomy.