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Orion Observer 70 EQ User Manual

Orion Observer 70 EQ
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INSTRUCTION MANUAL
IN 211 Rev. B 02/09
Providing Exceptional Consumer Optical Products Since 1975
Customer Support (800) 676-1343
E-mail: support@telescope.com
Corporate Offices (831) 763-7000
89 Hangar Way, Watsonville, CA 95076
Orion
®
Observer
70 EQ
#9882 Equatorial Refractor Telescope
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Orion Observer 70 EQ Specifications

General IconGeneral
Aperture70 mm
Focal Length700 mm
Focal Ratiof/10
Mount TypeEquatorial
Optical DesignRefractor
Eyepieces Included25mm, 10mm
TripodAluminum

Summary

Orion Observer 70 EQ Parts Identification

Optical Tube Assembly

Identifies the primary optical component of the telescope system.

Equatorial Mount

Details the mount that couples the optical tube to the tripod.

Tripod Legs and Accessory Tray

Lists the tripod legs and the tray for holding accessories.

Eyepieces and Star Diagonal

Identifies the eyepieces and the 90° mirror star diagonal.

EZ Finder II Reflex Sight

Details the reflex sight used for aiming the telescope.

Counterweight and Shaft

Identifies the counterweight and the shaft it attaches to.

Slow-Motion Control Cables

Lists the cables used for fine adjustments of telescope movement.

Basic Telescope Components Overview

Optical Tube Functionality

Explains the role of the optical tube in gathering and focusing light.

Star Diagonal Purpose

Describes how the star diagonal reflects light to the eyepiece.

Eyepiece Role in Magnification

Explains how eyepieces determine the telescope's magnification.

EZ Finder II Reflex Sight Use

Details the function of the EZ Finder II for aiming and locating objects.

Equatorial Mount Design

Explains the equatorial mount's function for tracking celestial objects.

Tripod Leg and Accessory Tray Features

Describes the tripod legs and the accessory tray for equipment.

Detailed Optical Tube Components

Objective Lens and Glare Shield

Describes the main objective lens and its protective glare/dew shield.

Focuser Drawtube and Focus Wheels

Explains the focuser drawtube and the wheels used for focusing.

Diagonal Holder and Eyepiece Thumbscrews

Details thumbscrews for securing the star diagonal and eyepieces.

Detailed Tripod and Mount Components

Setting Circles and Lock Knobs

Describes setting circles for R.A./Dec. and lock knobs for axis movement.

Counterweight Shaft and Lock Knob

Details the counterweight shaft and its securing lock knob.

Latitude Adjustment Bolts and Scale

Explains bolts and scale for adjusting the mount's latitude.

Azimuth Lock Knob and Tripod Screws

Details the azimuth lock knob and tripod leg attachment screws.

10mm Explorer II Eyepiece and Dust Cover

Lists the 10mm eyepiece and the protective dust cover.

Telescope Assembly Guide

Attaching Tripod Legs and Mount

Step-by-step instructions for connecting tripod legs to the equatorial mount.

Installing Leg Locks and Accessory Tray

Guidance on installing leg lock knobs and the accessory tray.

Setting Equatorial Mount Latitude

Procedure for setting the equatorial mount's latitude angle.

Mounting Counterweight and Optical Tube

Instructions for attaching the counterweight and securing the optical tube.

Getting Started with Your Telescope

Balancing Telescope on R.A. and Dec. Axes

Essential steps for balancing the telescope for smooth movement.

Observing with Eyeglasses

Advice for users who wear eyeglasses while observing.

Telescope Setup and Alignment Procedures

Attaching Slow-Motion Control Cables

How to connect the slow-motion control cables to the mount.

Mounting Finder Scope and Diagonal

Steps for mounting the finder scope bracket and the star diagonal.

Focusing and Operating Finder Scope

Guidance on focusing the telescope and operating the EZ Finder II.

Aligning the EZ Finder II

Procedure for aligning the EZ Finder II with the telescope.

Replacing EZ Finder II Battery

Instructions for replacing the battery in the EZ Finder II.

Equatorial Mount Polar Alignment

Understanding Polar Alignment Concept

Explanation of why polar alignment is crucial for tracking.

Polar Alignment: Leveling the Mount

Initial step of polar alignment: leveling the equatorial mount.

Advanced Mount Alignment and Usage

Setting Telescope Latitude and Aligning R.A. Axis

Steps for setting latitude and aligning the R.A. axis with Polaris.

Using Slow-Motion Controls and Tracking

Guidance on using slow-motion controls for tracking celestial objects.

Setting Circles and Optional Drives

Understanding setting circles and optional electronic drives.

Using Setting Circles for Object Location

Calibrating R.A. Setting Circle

Procedure to calibrate the Right Ascension setting circle.

Finding Objects with Calibrated Circles

How to use calibrated setting circles to locate celestial objects.

Telescope Pointing Guidance

Tips and explanations for pointing the telescope in different directions.

5. Using Your Telescope

Choosing an Optimal Observing Site

Advice on selecting a location for the best stargazing experience.

Observing Site Considerations

Impact of Light Pollution

Discusses how light pollution affects astronomical viewing.

Understanding Atmospheric Seeing

Explains atmospheric seeing and transparency for clear views.

Eyepiece Selection for Magnification

Guidance on selecting eyepieces to achieve desired magnification.

Telescope Magnification and Targets

Understanding Magnification Limits

Information on the practical limits of telescope magnification.

Observing the Moon's Surface

Tips for viewing lunar craters, mountains, and phases.

Observing Solar Features

Guidance on observing the Sun, including safety warnings.

Observing Celestial Objects

Detailed Planet Observations

Guidance on observing planets like Jupiter, Saturn, Venus, and Mars.

Star and Deep-Sky Object Viewing

Tips for observing stars, star clusters, and deep-sky objects.

6. Care and Maintenance

General Telescope Storage and Care

Recommendations for storing and caring for the telescope.

Optical Lens Cleaning Procedures

Proper methods for cleaning the telescope's optical lenses.

7. Telescope Specifications

One-Year Limited Warranty Information

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