Celestron CGE1400, CGE925, CGE1100, CGE800 manual Utility Features

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•DEC Switch - This is the declination switch error value set when Utilities / Calibrate Mount / DEC Switch - Cone is carried out.

•RA Switch - This is the R.A. switch error value set when Utilities / Calibrate Mount / R.A. Switch is carried out.

Utility Features

Scrolling through the MENU (9) options will also provide access to several advanced utility functions within the CGE such as; Mount Calibration, Periodic Error Correction, Hibernate as well as many others.

Calibrate Mount - In order to optimize the performance and pointing accuracy of the CGE mount, the CGE has built-in calibration routines allowing it to compensate for mechanical variation inherent in every German equatorial mount. Each calibration is completely automatic and in most cases only needs to be performed once. It is highly recommended that you take a few minutes to go through the mount calibration procedures.

•Dec Switch / Cone Calibration – this procedure simultaneously records the offset error when the declination switch is found at start-up and compensates for "cone" error due to slight misalignments of the optical tube and declination axis. For more information on calibrating the Dec switch and cone error, see the box called "Calibrating the CGE Mount" in the Startup Procedure section earlier in this chapter.

•R.A. Switch Calibration - this procedure records the offset error when the right ascension switch is found at start-up. Calibrating the R.A. switch will improve the accuracy of your initial star alignments when aligning the telescope.

•GoTo Calibration – Goto Calibration is a useful tool when attaching heavy visual or photographic accessories to the telescope. Goto Calibration calculates the amount of distance and time it takes for the mount to complete its final slow goto when slewing to an object. Changing the balance of the telescope can prolong the time it takes to complete the final slew. Goto Calibration takes into account any slight imbalances and changes the final goto distance to compensate.

Move to Switch – Slews the telescope to locate either its R.A. or declination switches.

UTILITIES

CALIBRATE MOUNT

DEC SWITCH / CONE

R.A. SWITCH

GOTO

MOVE TO SWITCH

R.A. TO SWITCH

DEC TO SWITCH

HOME POSTION

GOTO

SET

POLAR ALIGN

PEC

PLAYBACK

RECORD

LIGHT CONTROL

FACTORY SETTING

PRESS UNDO

PRESS "0"

VERSION

GET ALT-AZ

GOTO ATL-AZ

HIBERNATE

TURN ON/OFF RTC

TURN ON/OFF GPS

Home Position – The telescopes "home" position is a user-definable position that is used to store the telescope when not in use. The home position is useful when storing the CGE telescope in a permanent observatory facility and especially when using the Hibernate feature to maintain a star align over many observing sessions.

Polar Align- The CGE has a polar alignment function that will help you polar align your telescope for increased tracking precision and astrophotography. After performing an Auto Two-Star Alignment, the telescope will slew to where Polaris should be. By using the equatorial head to center Polaris in the eyepiece, the mount will then be pointed towards the actual North Celestial Pole. Once Polar Align is complete, you must re-align your telescope again using any of the alignment methods described earlier. To polar align the CGE mount in the Northern Hemisphere:

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Contents CGE800 CGE925 CGE1100 CGE1400 User Defined Objects Telescope Maintenance Some of the many standard features of the CGE include 12v Output Jack CGE 1400 ShownDiagonal Setting up the TripodPower Supply CounterweightAttaching the Electronics Pier Attaching the Center Leg BraceAttaching the Equatorial Mount Installing the Counterweight BarInstalling the Counterweight Counterweight Locking Screw Safety Screw WasherAttaching the Optical Tube to the Mount Attaching the Visual BackDovetail Slide Bar Dovetail Locking Knobs Mounting Platform Installing the Eyepiece Installing the Star DiagonalInstalling the Finderscope Moving the Telescope Manually Adjusting the MountBalancing The Mount in DEC Balancing The Mount in R.APowering the Telescope Attaching the Motor CablesTransporting the CGE Page CGE Hand Control Variable Stars Named StarsNamed Objects Double StarsStartup Procedure Alignment ProceduresAuto One-Star Align Auto Two-Star AlignQuick-Align Last AlignmentCGE Re-Alignment Finding Planets Object CatalogSelecting an Object Slewing to an ObjectRate Button Tour ModeConstellation Tour Direction ButtonsSetup Procedures Identify Precise GoTo Scope Setup FeaturesObserving Tip Helpful Hint Utility Features Helpful Hint Page CGE Ready Image Orientation Focusing Calculating MagnificationDetermining Field of View General Observing Hints Celestial Coordinate System Motion of the Stars Pointing at Polaris Latitude ScalesFinding the North Celestial Pole Declination Drift Method of Polar Alignment Planetary Observing Hints Observing the MoonLunar Observing Hints Observing the PlanetsSeeing Conditions Observing the SunSolar Observing Hints Observing Deep Sky ObjectsSeeing Short Exposure Prime Focus Photography Full Eyepiece ProjectionPlanet ISO Moon Mercury Venus Mars Jupiter Saturn Long Exposure Prime Focus PhotographyPeriodic Error Correction PEC Using Periodic Error Correction CCD Imaging Terrestrial PhotographyMetering Reducing VibrationFastar Compatible Optical System Fastar F/2 Imaging With Reducer/Corrector Medium size to small galaxiesPlanetary or Lunar Auto Guiding Collimation Care and Cleaning of the OpticsCollimated telescope Should appear Symmetrical with Page At f/10 and 163 power with the CGE Page Technical Specifications Idle Current Appendix a Longitudes Latitudes Georgia Minnesota Rhode Island Canada Communication Protocol Appendix B RS-232 ConnectionReset The Position Of Azm Or Alt Additional RS232 CommandsAppendix C Maps of Time Zones Page Page Page Page Page Page Page Celestron TWO Year Warranty
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