Celestron EdgeHD 925 Instruction Manual
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Celestron EdgeHD 925 Instruction Manual

Edgehd series
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INSTRUCTION MANUAL
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Summarization of Contents

Attaching the Visual Back
Installing the Star Diagonal
Installing the Eyepiece
Installing the Finderscope
Aligning the Finderscope
Removing the Lens Cap
Telescope Basics
Image Orientation
Describes how image orientation changes based on accessory usage.
Focusing
Mirror Support Clutches
Explanation of mirror support clutches for stabilizing the primary mirror.
Calculating Magnification
Determining Field of View
General Observing Hints
Astrophotography
Short Exposure Prime Focus Photography
Guide to basic astrophotography using the camera attached directly to the telescope.
Eyepiece Projection
Long Exposure Prime Focus Photography
Metering
Reducing Vibration
CCD Imaging
Fastar Option – Using your EdgeHD telescope at f/2 with optional lens assembly
Details on converting the telescope to an f/2 system for faster imaging.
Telescope Maintenance
Care and Cleaning of the Optics
Instructions for safely cleaning the telescope's optical components.
Collimation
Procedure for aligning the telescope's optical system for peak performance.
Optional Accessories
Barlow Lens
Description of Barlow lenses that increase telescope magnification.
Erect Image Diagonal
Accessory for terrestrial viewing with upright, correct-to-left image orientation.
Eyepieces
Overview of different eyepiece designs and their specifications.

Table of Contents