Orion 9995 instruction manual Play Back the PEC Record, Drifting caused by periodic error

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Note: Guiding actions are recorded even when the PEC train- ing is stopped midway. The PEC + sidereal tracking will not be accurate until a full cycle of the PEC Training is performed.

The Sirius EQ-G will emit a “beep” sound and display “Record completed” when the training time is up. Press any button to exit from the PEC Training upon completion.

Play Back the PEC Record

PEC tracking can be activated under the Setup menu or by pressing the Setup button when needed. In the Setup menu, choose “Set Tracking”, then “PEC + Sidereal”. The Sirius EQ- G will play back the corrections you made during the PEC training cycle and start tracking with periodic error compen- sated for.

Note: The Sirius EQ-G will continue to track in the PEC + sidereal mode until another tracking mode is selected. If the power is turned off while the Sirius EQ-G is in the PEC + side- real mode, the hand controller loses synchronization with the R.A. worm gear and the PEC training will have to be repeated when the power is turned back on. To avoid this, be sure to return the telescope to its home position by selecting “Park Scope” in the Utility Functions menu before turning off the power.

Figure 21. Drifting caused by periodic error.

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Contents Orion Sirius EQ-G #9995Sirius EQ-G mount Table of Contents AssemblyParts List UnpackingAttaching a Telescope Balancing a TelescopeSetting Up and Using the Equatorial Mount Polar AlignmentPolar Axis Finder Scope Alignment of the Polar Axis Finder ScopeUsing the Polar Axis Finder Scope Confused About Pointing the Telescope?Powering the Sirius EQ-G Mount Sirius EQ-G Dual-Axis ControllerAttaching the Dual-Axis Controller Functions of the Dual-Axis Hand ControllerSetting the Slewing Speed Speed buttons Directional buttons Set buttonSpeed Buttons Tracking Objects with the Dual-Axis Hand ControllerSirius EQ-G GoTo Hand Controller Mode Buttons Functions of the GoTo Hand ControllerInitial Setup GoTo Hand Controller OperationScroll Buttons Dual Purpose ButtonsAlignment Three-Star AlignmentTwo-Star Alignment One-Star AlignmentTips for Choosing Alignment Stars Pointing Accuracy Enhancement PAEObject Catalog Other FunctionsSetup Functions Using the User Defined DatabaseSet Tracking Saving an Object to the DatabasePreparing the Computer for the Update Identifying an Unknown ObjectLinking with a Computer Auto GuidingPage Sirius EQ-G GoTo Hand Controller Menu Tree Specifications Cone Error Calibration Testing for Cone ErrorCone Error Calibration Procedure Appendix a Enhancing the Pointing AccuracyB.Rotate the telescope 180 about the R.A.axis Appendix B Periodic Error Correction PEC PEC TrainingDrifting caused by periodic error Play Back the PEC RecordAdditional RS-232 Commands Sending a Tracking Rate Sending a Slow-GoTo CommandResetting the Position of Azimuth or Altitude Appendix C RS-232 ConnectionAppendix D Standard Time Zones of the World Page One-Year Limited Warranty

9995 specifications

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