TELESCOPE BASICS

29

Image Orientation

29

Focusing

30

Aligning the Finderscope

30

Calculating Magnification

30

Determining Field of View

31

General Observing Hints

31

ASTRONOMY BASICS

32

The Celestial Coordinate System

32

Motion of the Stars

33

Finding the North Celestial Pole

35

Declination Drift Method of Polar Alignment

36

CELESTIAL OBSERVING

37

Observing the Moon

37

Lunar Observing Hints

37

Observing the Planets

37

Observing the Sun

37

Solar Observing Hints

38

Observing Deep Sky Objects

38

Seeing Conditions

38

Transparency

38

Sky Illumination

38

Seeing

38

ASTROPHOTOGRAPHY

40

Piggyback

40

Short Exposure Prime Focus Photography

41

Terrestrial Photography

42

Metering

42

Reducing Vibration

42

Auto Guiding

43

TELESCOPE MAINTENANCE

44

Care and Cleaning of the Optics

44

Collimation

44

OPTIONAL ACCESSORIES

48

APPENDIX A – TECHNICAL SPECIFICATIONS

51

APPENDIX B – GLOSSARY OF TERMS

52

APPENDIX C – LONGITUDES AND LATITUDES

55

APPENDIX D – RS-232 CONNECTION

60

APPENDIX E – TIME ZONE MAP

62

SKY MAPS

64

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Celestron C8-NGT, C10-N manual Telescope Maintenance

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.