Celestron 91525, 11055, 11065 instruction manual Attaching the Equatorial Mount

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Attaching the Equatorial Mount

After the tripod is set up, you are ready to attach the equatorial mount. The equatorial mount is the platform to which the telescope attaches and allows you to move the telescope in right acsension and declination. The mount is also adjustable so you can orient the axis of rotation so that it is parallel with the Earth’s axis of rotation (see the section on “Polar Alignment”). To attach the equatorial mount to the tripod:

1.Insert the base of the equatorial mount into the top of the central column.

2.Rotate the equatorial mount on the central column until the holes in the mount line up with those in the central column and the dec opening (where the counterweight shaft will go) is positioned directly over one of the tripod legs.

3.Insert the three remaining 3/8-16 cap screws and washers provided through the holes in the central pier and into the equatorial mount (see Figure 2-5).

4.Tighten the screws to hold the equatorial mount in place.

Counterweight

Equatorial Mount

Shaft Opening

 

Central Column

Figure 2-5

8 • Assembling Your CM-1100

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Contents Page E C e l e s t r o n C M- 11 00/1400 B L E O F C O N T E N T S Iv Table of Contents T R O D U C T I O N How to Use This Manual Word of Caution Schmidt-Cassegrain Optical System S E M B L I N G Y O U R C M 1 1 0 Unpacking Your Celestron CM-1100CM-1100 Setting Up the Tripod Attaching the Center Leg Brace Attaching the Central Column Central Column Electronics Console Center Leg BraceAttaching the Equatorial Mount Installing Counterweight Bar Installing CounterweightAttaching the Optical Tube to the Mount Attaching the Visual Back Installing the Star Diagonal Assembling Your CM-1100 Installing the Finder Installing the Polar Finder Moving the Telescope in R.A. and DEC Adjusting the Mount Balancing the Mount in R.A Balancing the Mount in DEC Assembling Your CM-1100 Technical Specifications Tripod L E S C O P E B a S I C S Image OrientationFocusing General Photography Hints Aligning the Finder Your First Look Daytime ObservingNighttime Observing Calculating Magnification Determining Field of View T R O N O M Y B a S I C S Celestial Coordinate SystemMotion of the Stars Polar Alignment DefinitionFinding the Pole Latitude Scales Pointing at Polaris Polar Axis Finder Declination Drift Aligning the R.A. Setting Circle Setting the DEC Circle Powering Up the Drive I N G T H E D R I V EGuide Speed Periodic Error Correc- tion BC Backlash CorrectionHC/CCD Northern/Southern Hemisphere Operation Hand ControllerDEC Reverse AutoguidingL E S T I a L O B S E R V I N G Observing the MoonObserving the Sun Using Your Setting Circles Observing Deep-Sky ObjectsStar Hopping Celestial Observing Viewing Conditions TransparencySky Illumination Seeing ConditionsCelestial Observing L E S T I a L P H O T O G R a P H Y Lunar Phase ISO Crescent Quarter Short Exposure Prime FocusFull Celestial Photography Piggyback Celestial Photography Eyepiece Projection Planet ISO Moon Mercury Venus Mars Jupiter Saturn Long Exposure Prime Focus Celestial Photography CCD Imaging Fastar Configuration Description of F-numbersImaging at f/7 Imaging at f/11 Medium size to small galaxiesLunar or small planetary nebulae Imaging at f/22 Planetary or LunarCare and Cleaning of the Optics Collimation L E S C O P E M a I N T E N a N C ETelescope Maintenance Telescope Maintenance T I O N a L a C C E S S O R I E S Optional Accessories Optional Accessories Optional Accessories Const Mag Type Proper NameNGC# Spiral Galaxy Epoch Star Name Constellation MagnitudeAstronomy Texts AtlasesGeneral Observational Astronomy Visual ObservationCelestron ONE Year Warranty