Celestron CGEM 1100 User Manual

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Celestron CGEM 1100 Specifications

General

Optical Design	Schmidt-Cassegrain
Focal Length	2800 mm
Focal Ratio	f/10
GoTo	Yes
Database	40, 000+ Objects
Highest Useful Magnification	660x
Lowest Useful Magnification	40x
Limiting Stellar Magnitude	14.7
Resolution (Rayleigh)	0.5 arc seconds
Optical Coatings	StarBright XLT
Power Requirements	12 VDC
Aperture	279 mm (11 inches)
Mount Type	German Equatorial
Tracking Modes	Alt-Az, EQ North, EQ South
Tripod	2-inch steel
Alignment Procedures	Auto Two-Star Align, Two-Star Align, Solar System Align

Summary

Introduction and Safety

Warning

Warnings regarding safe telescope use, including eye protection and handling.

Assembly and Initial Setup

Telescope Operation and Alignment

Balancing the Mount

Hand Control Overview and Operation

Description of the hand control's features and how to operate basic functions.

Alignment Procedures

Methods for aligning the telescope with the sky for accurate object location.

Polar Aligning the Mount

Using the hand control or latitude scale for accurate polar alignment.

Advanced Features and Observing

Setup Procedures

Scope Setup Features

Utility Features

Periodic Error Correction (PEC)

Improving tracking accuracy for astrophotography by correcting worm gear errors.

Astrophotography

Prime Focus Photography

Eyepiece Projection

Long Exposure and CCD Imaging

Advanced deep-sky, CCD imaging, and auto guiding techniques.

Maintenance, Accessories, and Reference

Telescope Maintenance

Collimation

Steps to align the telescope's optical system for optimal performance.