Celestron C100ED-R, C80ED-R manual Attaching the Center Leg Brace, Installing the Counterweight Bar

Page 7

attaches to the tripod head. On one side of the tripod head there is a metal alignment peg for aligning the mount. This side of the tripod will face north when setting up for an astronomical observing session. To attach the equatorial head:

1.Locate the azimuth adjustment screws on the equatorial mount.

2.Retract the screws so they no longer extend into the azimuth housing on the mount. Do NOT remove the screws since they are needed later for polar alignment.

3.Hold the equatorial mount over the tripod head so that the azimuth housing is above the metal peg.

4.Place the equatorial mount on the tripod head so that the two are flush.

5.Tighten the knob (attached to the central rod) on the underside of the tripod head to hold the equatorial mount firmly in place.

Attaching the Center Leg Brace

1.Slide the accessory tray over the central rod so that each arm of the tray is pushing against the inside of the tripod legs.

2.Thread the accessory tray knob on to the central rod and tighten.

Installing the Counterweight Bar

 

 

 

 

 

 

 

 

To properly balance the telescope, the mount comes with a counterweight bar and at least one counterweight

 

(depending on model). To install the counterweight

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

bar:

 

 

 

 

 

 

 

 

1. Locate the opening in the equatorial mount on the

 

 

 

 

 

 

 

 

DEC axis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Thread the counterweight bar into the opening until

 

Mounting Knob

 

 

 

tight.

 

Figure 2-3

 

 

 

3. Tighten the counterweight bar lock nut fully for added

 

 

Central Rod

 

 

 

 

 

 

 

 

 

Accessory Tray

 

 

 

 

 

 

 

support (see fig 2-5).

 

 

 

 

 

 

 

 

 

 

 

Once the bar is securely in place you are ready to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

attach the counterweight.

 

 

 

 

 

 

 

 

 

 

Accessory

 

 

 

 

 

 

Tray Knob

 

 

 

 

 

 

 

 

 

Figure 2-4

 

Since the fully assembled telescope can be quite heavy, position the mount so that the polar axis is pointing towards north before the tube assembly and counterweights are attached. This will make the polar alignment procedure much easier.

7

Page 6 Page 8
Image 7
Page 6 Page 8
Contents Advanced Series Advanced Series GT Introduction Care and Cleaning of the Optics Page Advanced GT Series 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 CounterweightFor Non-GT Models Only Attaching the Telescope Tube to the Mount Optical Tube Installing the FinderscopeBalancing the Tube in R.A Installing the EyepiecesBalancing the Telescope in DEC Adjusting the MountAdjusting the Mount in Azimuth Adjusting the Mount in AltitudeAttaching the Declination Cable For GT Models Only Powering the Telescope Advanced GT Hand Control Double Stars Hand Control OperationStartup Procedure Alignment ProceduresAuto Three-Star Align Auto AlignLast Alignment Quick-AlignRe-Alignment Finding Planets Object CatalogSelecting an Object Slewing to an ObjectRate Button Tour ModeConstellation Tour Direction ButtonsSetup Procedures Identify Precise GoTo Scope Setup FeaturesObserving Tip Helpful Hint Utility Features Helpful Hint Advanced GT Image Orientation Aligning the Finderscope FocusingCalculating Magnification General Observing Hints Determining Field of ViewCelestial Coordinate System Motion of the Stars Pointing at Polaris 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 Piggyback Short Exposure Prime Focus Photography Metering Terrestrial PhotographyReducing Vibration Auto Guiding Care and Cleaning of the Optics 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

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.
Top Page Image Contents