Celestron C80ED-R, C100ED-R manual Hand Control Operation, Double Stars

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4.Catalog Keys: The Advanced Series has keys on the hand control to allow direct access to each of the catalogs in its database. The hand control contains the following catalogs in its database:

Messier – Complete list of all Messier objects.

NGC – Complete list of all the deep-sky objects in the Revised New General Catalog. Caldwell – A combination of the best NGC and IC objects.

Planets - All 8 planets in our Solar System plus the Moon.

Stars – A compiled list of the brightest stars from the SAO catalog.

List – For quick access, all of the best and most popular objects in the Advanced GT database have been broken down into lists based on their type and/or common name:

Named Stars

Common name listing of the brightest stars in the

Named Objects

sky.

 

 

Alphabetical listing of over 50 of the most popular

Double Stars

deep sky objects.

 

 

Numeric-alphabetical listing of the most visually

 

stunning double,

triple and quadruple stars in the

Variable Stars

sky.

 

 

Select list of the brightest variable stars with the

Asterisms

shortest period of changing magnitude.

 

A unique list of some of the most recognizable star

CCD Objects

patterns in the sky.

 

 

A custom list of many interesting galaxy pairs, trios

 

and clusters that are well suited for CCD imaging

IC Objects

with the Advanced GT telescope.

 

A complete list of all the Index Catalog

deep-sky

Abell Objects

objects.

 

 

A custom list of

the Abell Catalog

deep-sky

Constellation

galaxies.

 

 

A complete list of all 88 constellations.

 

5.Info: Displays coordinates and useful information about objects selected from the Advanced GT database.

6.Tour: Activates the tour mode, which seeks out all the best objects for the current date and time, and automatically slews the telescope to those objects.

7.Enter: Pressing Enter allows you to select any of the Advanced GT functions and accept entered parameters.

8.Undo: Undo will take you out of the current menu and display the previous level of the menu path. Press Undo repeatedly to get back to a main menu or use it to erase data entered by mistake.

9.Menu: Displays the many setup and utilities functions such as tracking rates and user defined objects and many others.

10.Scroll Keys: Used to scroll up and down within any of the menu lists. A double-arrow will appear on the right side of the LCD when there are sub-menus below the displayed menu. Using these keys will scroll through those sub-menus.

11.Rate: Instantly changes the rate of speed of the motors when the direction buttons are pressed.

12.RS-232 Jack: Allows you to interface with a computer and control the telescope remotely.

Hand Control Operation

This section describes the basic hand control procedures needed to operate the GT Series Telescopes. These procedures are grouped into three categories: Alignment, Setup and Utilities. The alignment section deals with the initial telescope alignment as well as finding objects in the sky; the setup section discusses changing parameters such as tracking mode and tracking rate; finally, the last section reviews all of the utilities functions such as calibrating your mount, polar alignment and backlash compensation.

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Contents Advanced Series Advanced Series GT Introduction Care and Cleaning of the Optics Page Advanced GT Series Setting up the Tripod Attaching the Equatorial MountInstalling the Counterweight Bar Attaching the Center Leg BraceAttaching the Hand Control Holder Advanced GT Models Only Installing the CounterweightFor Non-GT Models Only Attaching the Telescope Tube to the Mount Installing the Finderscope Optical TubeInstalling the Eyepieces Balancing the Tube in R.AAdjusting the Mount Balancing the Telescope in DECAdjusting the Mount in Azimuth Adjusting the Mount in AltitudeAttaching the Declination Cable For GT Models Only Powering the Telescope Advanced GT Hand Control Hand Control Operation Double StarsAlignment Procedures Startup ProcedureAuto Align Auto Three-Star AlignLast Alignment Quick-AlignRe-Alignment Object Catalog Selecting an ObjectSlewing to an Object Finding PlanetsTour Mode Constellation TourDirection Buttons Rate ButtonSetup Procedures Identify Scope Setup Features Precise GoToObserving Tip Helpful Hint Utility Features Helpful Hint Advanced GT Image Orientation Aligning the Finderscope FocusingCalculating Magnification Determining Field of View General Observing HintsCelestial Coordinate System Motion of the Stars Pointing at Polaris Finding the North Celestial Pole DefinitionDeclination Drift Method of Polar Alignment Observing the Moon Lunar Observing HintsObserving the Planets Observing the SunSolar Observing Hints Observing Deep Sky ObjectsSeeing Conditions TransparencyPage 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.
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