Care and Cleaning of the Optics | Celestron C100ED-R, C80ED-R

Light Control	27
Factory Settings	27
Version	27
Get Alt-Az	27
Goto Alt-Az	27
Hibernate	27
Turn On/Off GPS	27
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
OPTIONAL ACCESSORIES	45
APPENDIX A – TECHNICAL SPECIFICATIONS	47
APPENDIX B – GLOSSARY OF TERMS	48
APPENDIX C – LONGITUDES AND LATITUDES	51
APPENDIX D – RS-232 CONNECTION	56
APPENDIX E – TIME ZONE MAP	58
SKY MAPS	60

C100ED-R, C80ED-R specifications

Celestron, a renowned name in the field of astronomy, has built a reputation for producing high-quality telescopes that are accessible to both amateur and professional astronomers alike. Among their impressive lineup are the Celestron C100ED-R and C80ED-R telescopes, both of which are crafted to enhance the observational experience through advanced optics and user-friendly features.

The Celestron C100ED-R, a 100mm refractor telescope, stands out for its premium extra-low dispersion (ED) glass, which delivers exceptional color correction and sharpness. This ED technology minimizes chromatic aberration, ensuring clearer and more colorful celestial images. The telescope boasts a focal length of 900mm, resulting in a focal ratio of f/9. This combination allows for high magnification capabilities while maintaining a wide field of view, perfect for observing both planetary details and deep-sky objects. The robust, yet lightweight design of the C100ED-R makes it highly portable, allowing for convenient stargazing sessions.

On the other hand, the C80ED-R is a 80mm refractor telescope that combines portability with performance. With its 600mm focal length and f/7.5 focal ratio, the C80ED-R is ideal for wide-field observations, making it easy to explore star clusters and large nebulae. Like its larger counterpart, the C80ED-R features ED glass, which prevents color distortion, allowing for clear and crisp images. The compact design is perfect for those who wish to travel or set up in tight spaces, ensuring that astronomy remains accessible.

Both telescopes are equipped with high-quality multi-coated optics that enhance light transmission, resulting in brighter images. Celestron's user-friendly mounting systems allow for smooth tracking of celestial objects, making it easier to follow objects as they move across the night sky. Additionally, these telescopes come with a variety of accessories, including premium eyepieces that enhance the viewing experience, and sturdy tripods that provide stable support during observations.

In summary, both the Celestron C100ED-R and C80ED-R offer exceptional features that cater to a variety of observing needs. With advanced ED optics, high-quality construction, and portability, they are ideal choices for aspiring astronomers looking to explore the wonders of the universe. Whether you're interested in planetary observation or deep-sky exploration, Celestron's C100ED-R and C80ED-R will not disappoint.