Celestron NexStar 80GTL User Manual

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Celestron NexStar 80GTL Specifications

General

Brand	Celestron
Model	NexStar 80GTL
Category	Telescope
Language	English

Summary

Introduction

Safety Warnings

Important safety precautions to prevent eye damage and equipment harm during telescope operation.

Assembly

Assembling the NexStar

Step-by-step instructions for assembling the telescope tube, fork arm, and tripod.

Attaching Telescope and Tripod

Procedure for securely mounting the telescope assembly onto the tripod base.

Balancing the Telescope Tube

Guidance on balancing the telescope tube within the tube ring for optimal performance.

Star Pointer Finderscope Setup

Introduction, installation, and operation of the Star Pointer finderscope for aiming.

Using Your Solar Filter

Hand Control Operation

Attaching the Hand Control

Procedure for connecting the NexStar GT hand control to the telescope's fork arm.

Powering the NexStar

The Hand Control Components

Overview of the hand controller's display, buttons, and their functions.

Alignment Procedures

Steps for aligning the telescope to the sky, including Auto-Align, Two-Star, and Quick-Align methods.

Object Catalog and Tour Mode

Set Up Procedures

Direction Buttons and Slew Rates

Tracking Mode and Rate

Setting the telescope's tracking mode (Alt-Az, EQ) and tracking rate (Sidereal, Lunar, Solar).

User Defined Objects

Utility Features

Setup Time-Site and Anti-backlash

Telescope Basics

Calculating Magnification

Determining Field of View

Celestial Observing

Observing the Moon

Observing the Planets

Planetary Observing Hints

Observing the Sun

Safe procedures for observing the Sun, including filter installation.

Solar Observing Hints

Best times and methods for observing the Sun, including tracking rate selection.

Observing Deep Sky Objects

Telescope Maintenance

Care and Cleaning of the Optics

Instructions for safely cleaning telescope lenses and optics to prevent damage.

Optional Accessories

Eyepieces and Filters

Light Pollution Filters

Technical Specifications

RS-232 Connection Guide

Celestron Two Year Warranty