Orion CT80 User Manual

INSTRUCTION MANUAL
IN 598 10/17
Orion
®
CT80 Compact 80mm
Equatorial Refractor
#9911
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Orion CT80 Specifications

General

Brand	Orion
Model	CT80
Category	Telescope
Language	English

Summary

2. Assembly

3. Preparing the Telescope for Operation

Aligning and Using the Red Dot Finder Scope

Describes how to align the red dot finder scope with the main telescope for accurate pointing.

4. Understanding and Using the Equatorial Mount

Polar Alignment

Explains how to align the mount's RA axis with Earth's rotational axis for accurate celestial tracking.

Using the R.A. and Dec. Slow-Motion Control Cables

Details how to use slow-motion controls for fine telescope adjustments and tracking celestial objects.

Tracking Celestial Objects

Explains how to track objects using the R.A. slow-motion control after polar alignment.

Understanding the Setting Circles

Calibrating the Right Ascension Setting Circle

Finding Objects with the Setting Circles

5. Astronomical Observing

Choosing an Observing Site

Star-Testing the Telescope

Details the star test procedure to check optical alignment and identify potential issues.

Eyepiece Selection

Focusing the Telescope

Provides instructions on how to focus the telescope for a sharp image.

Objects to Observe

Introduces different categories of celestial objects visible through the telescope.

The Moon

The Planets

The Sun

Deep-Sky Objects

7. Telescope Care and Maintenance

Cleaning Optics