Table of Contents
Advertisement
Quick Links
Congratulations on your purchase of the Celestron Onxy 80EDF telescope! Whether your interest lies in
nature or celestial viewing the Onyx 80EDF telescopes offers the finest optical quality guaranteed to give
you years of viewing pleasure.
Focuser Rotation
Locking Screw
2" Focuser (with
1.25" Adapter)
Photographic Tripod
For best results, attach your Celestron telescope to a heavy duty photo tripod or equatorial mount.
1. To attach to a standard photo tripod:
2. Align the hole at the bottom of the tripod mounting bracket with the ¼"x20 mounting screw on
top of any standard photo tripod.
3. Thread the mounting screw into the tripod mounting bracket to secure the scope in place.
Equatorial Mount
Your Onyx 80EDF's mounting bracket can be used with the Advanced GT CG-5 equatorial mount. Follow
the directions in your mounts owner manual for instruction on attaching the optical tube.
VISUAL OBSERVING INFORMATION
Focusing
In order to focus your telescope for visual use it is necessary to use the appropriate diagonal and eyepiece.
Celestron offers both 1.25" and 2" diagonals that are suited for both daytime (land) viewing and nighttime
stargazing. See Optional Accessories section for more information.
Onyx 80EDF
Sight Scope
Phototripod / Telescope
Focuser Knobs
Mounting Bracket
Extendable
Lens Shade
Advertisement
Table of Contents
Related Manuals for Celestron Onyx80EDF
Summary of Contents for Celestron Onyx80EDF
-
Page 1: Equatorial Mount
In order to focus your telescope for visual use it is necessary to use the appropriate diagonal and eyepiece. Celestron offers both 1.25” and 2” diagonals that are suited for both daytime (land) viewing and nighttime stargazing. See Optional Accessories section for more information. -
Page 2: Calculating Magnification (Power)
1. When working with any optical instrument, there are several focusing hints that will ensure that you get the sharpest possible image. The hints listed here are for visual observing and photography. 2. Never look through glass. Glass found in household windows is optically imperfect and may vary in thickness from one location to the next. -
Page 3: Reducing Vibration
PHOTOGRAPHY HINTS Metering Celestron telescopes have fixed apertures and, as a result, fixed f/ratios. To properly expose your subjects photographically, you need to set your shutter speed accordingly. Most 35mm SLR cameras offer through- the-lens metering which lets you know if your picture is under or overexposed. Adjustments for proper exposures are made by changing the shutter speed. -
Page 4: Observing The Planets
Unless your telescope is mounted onto a computerized mount, you will need to know where to look in the sky for these objects. The Celestron Sky Maps (#93722) will help you locate the brightest deep sky objects. Once you start observing deep sky objects, there are a few things to remember. First, most deep sky objects have a large angular size. -
Page 5: Care And Cleaning Of The Optics
Or liquid dish soap diluted with water (a couple of drops per one quart of water) can be used. Internal adjustments and cleaning should be done only by the Celestron repair department. If your telescope is in need of internal cleaning, please contact the factory for service. -
Page 6: Optional Accessories
It has a Starbright XLT manufactured for reliability Diagonal, Erect Image - 45° -1-1/4" (#94112-A) - Celestron’s Erect Image Diagonals are an Amici prism design. This design allows you to look into the telescope at a 45° angle, at images that are oriented properly, meaning the image is upright and correct from left to right. -
Page 7: Specifications
Instrument Weight (lb) A Word of Caution! Your Celestron telescope is designed to give you hours of fun and rewarding observations. There are, however, a few things to consider before using your telescope that will ensure your safety and protect your equipment. -
Page 8: Celestron Two Year Warranty
Celestron, is found to be defective in materials or workmanship. As a condition to the obligation of Celestron to repair or replace such product, the product must be returned to Celestron together with proof-of-purchase satisfactory to Celestron.