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Meade LX80 instruction manual PeriodicErrorCorrectionPECTraining Polar Alignment and RA Drive Only

Models: LX80

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Appendix D: Equatorial ( Polar Alignment)

PeriodicErrorCorrection(PEC)Training (Polar Alignment and RA Drive Only)

If you wish to improve the tracking performance on your telescope, ﬁrst, perform the train the drive procedure (see page 57). Then use the Periodic Error Correction (PEC)/Train menu option to remove the slight perturbations from center that occur due to the mechanical nature of a telescope. To perform this procedure, you need to use a high-power reticle, such as the 9mm reticle (see OPTIONAL ACCESSORIES, page 52).

Important Note: In order for the Smart Drive training to operate and be updated properly, you must “park” the telescope (see PARK SCOPE, page 41) when ﬁnished with your observing session.

PEC Train Menu Option

To perform the procedure on the RA axis, pick a bright star in the South that has minimal movement and is about 30° above the horizon (Note: If in the Southern hemisphere, pick a star in the North that is about 30° above the horizon).

Important Note: The Train option overwrites any previous PEC data.

1.Select “PEC Train” from the Smart Drive menu (in the “Setup: Telescope” menu) and press ENTER.

2.Look through the reticle. Use the Arrow keys to keep the star centered in the reticle cross-hairs. AudioStar displays a count of the 150 positions of the worm gear. When the count reaches 150, one cycle is complete. A full cycle takes about 9.5 minutes.

3.Press MODE to exit.

PEC Update Menu Option

PEC Update does not overwrite the data, but updates the training using information gathered from both the last and the current training sessions. Press the MODE key to exit from this option. If you wish to further reﬁne your training, select this menu again and repeat the procedure.

PEC Erase Menu Option

Select this option to erase all PEC training data.

PEC On and Off Menu Options

Select “On” when you want the telescope to use the training information. Select “Off” when you do not want for the telescope to use the training information.

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Meade LX80 PeriodicErrorCorrectionPECTraining Polar Alignment and RA Drive Only, Appendix D Equatorial Polar Alignment

Contents

LX80 Multi-Mount Telescope System With Astronomer Inside Instruction ManualPage BATTERY SAFETY INSTRUCTIONS Caution If batteries or parts are swallowed, see a doctor immediatelyCONTENTS Introduction INTRODUCTIONThe LX80 Telescope A solid telescope built for a lifetime of serviceTelescope Features Telescope FeaturesLX80 Multi-Mount Robust Aluminum ConstructionCounterweight Shaft AudioStarControl Panel Industry Standard Dovetail AdapterLX80 Key Features LX80 Key FeaturesFigure 1 LX80 Key Features - Rear View LX80 Key Features LX80 Key FeaturesFigure 2 LX80 Key Features - Front View A. B. C. D. E. F LX80 Key FeaturesLX80 Key Features Figure 3 LX80 Control Panel - Detail4$ 4% LX80 Key FeaturesLX80 Key Features Figure 5 LX80 Drive Base Close-upAdjustments for German EQ Mode LX80 Key FeaturesLX80 Key Features Fig 8 Azimuth AdjustmentLX80 Series Your Personal Window to the Universe LX80 Key FeaturesVixen-style Dovetail Receiver Place OTA dovetail here Telescope Control Panel2# 2$ 2% 3# 3$ 3%4# 4$ 4% LX80 Key FeaturesHow to Assemble Your Telescope Getting StartedGetting Started Fig 13 Spread the tripod legsFig 17 Thread-on counterweight shaft Getting Started4. Attach mount to tripod base. Place the mount Fig 16 Tighten three 3 knobs at undersideGetting Started Attach viewﬁnder to the OTAFig 19 Tighten DEC lock Fig 20 Slide dovetail into bracket and secureFig 24 Plug AudioStar into HBX connector Getting StartedFig 22 Secure diagonal into holder Fig 23 Insert eyepiece into diagonalBalancing the Telescope RA Right Ascension BalanceGetting Started Fig 25 While maintaining hold of OTA, loosen the DEC lockAligning the Viewﬁnder Fig 31 Adjust counterweight to achieve balanceGetting Started Fig 28 Loosen RA lock - right and left sidesObserving by Moving the Telescope Manually Choosing an EyepieceGetting Started Using AudioStar’s GoTo Capabilities Moving Through AudioStar’s MenusActivate the Arrow Keys Slew SpeedsPlaying Audio Entering Data into AudioStarNavigating AudioStar Observe the MoonLX80 Multi-Mount System The LX80 Multi-Mount SystemInitializing AudioStar Aligning the LX80Setting the Alt-Azimuth Home Position The LX80 Multi-Mount SystemAlt-Azimuth Mode Finding True NorthPerform the Easy Align Procedure Finding Magnetic NorthEasy Two-Star Align The LX80 Multi-Mount SystemGo To Saturn Using the Guided TourThe LX80 Multi-Mount System Setting the Polar Home Position Equatorial ModeFig 35 Tilt the mount head using hex head tool The LX80 Multi-Mount SystemHow to perform the Easy Align Locating the Celestial PoleEasy Align The LX80 Multi-Mount SystemUsing the Guided Tour Note AudioStar locates alignment stars based on the date, time and location entered. Using this information and the Polar Home Position as its starting point, the alignment stars should easily be placed within the viewﬁnder. The alignment stars may change from night to night. All that is required is for the observer to center the selected stars in the eyepiece when promptedThe LX80 Multi-Mount System Go To SaturnDual OTA Mode The LX80 Multi-Mount SystemAlt-Azimuth Mode Fig 37 Dual OTA Alt-AzThe LX80 Multi-Mount System LX80 TIPSObserving Considerations AudioStar Handbox AudioStar HandboxTour the Cosmos with Just the Push of a Button 2-Line LCD DisplayControl your LX80 with your PC using a serial interface AudioStar HandboxAudioStar Handbox Slew SpeedsObservation Using AudioStar’s Arrow Keys Playing the AudioTerrestrial Observing AudioStar HandboxAudioStar Operation AudioStar OperationAudioStar Navigation Exercise To Calculate Sunset timeObject Menu AudioStar OperationAudioStar #497 MENU TREE AudioStar #497 Menu TreeFigure 43 The AudioStar #497 Menu Tree Event Menu Glossary MenuUtilities Menu AudioStar OperationNote This feature is usually only required in very cold weather Setup MenuAudioStar Operation AudioStar Operation selected telescopeAudioStar Operation Delete Deletes a stored site from the databaseAdvanced AudioStar Features AudioStar OperationAdding Observing Sites To Add a Site to the user-deﬁned site listUsing AudioStar to Find Objects Not in the Database To GoTo a user-entered objectObserving Satellites AudioStar OperationLandmarks AudioStar OperationNOTE Satellite observing is an exciting challenge. Most To Add a landmark to the databaseIdentify AudioStar OperationTo Select a landmark from the database To perform a Landmark SurveyAudioStar Operation Training the DriveDisplayed information Example Advanced alt/az Alignment BrowseToo Much Power? AudioStar OperationPhotography with the LX80 PHOTOGRAPHY WITH THE LX80A few tips on photography with the LX80 Photography with a Digital CameraPhotography with the LX80 Photography with Meade’s AudioStar SuiteOptional Accessories Optional AccessoriesSeries 5000 Ultra Wide Angle Series 5000 HD-60Optional Accessories Maintenance MAINTENANCEStorage and Transport Inspecting the OpticsTROUBLESHOOTING TroubleshootingUnable to see an image through the eyepiece Object appears in the viewﬁnder but not in the eyepieceCustomer Service CUSTOMER SERVICETelescope pauses when changing slew direction PageDrive AppendixAPPENDIX A Training theAppendix B Basic Astronomy APPENDIX BBASIC ASTRONOMY Objects in SpaceAppendix B Basic Astronomy Deep-Sky Objectscations APPENDIX C SPECIFICATIONSAppendix C Speciﬁ Alignment Appendix D Equatorial PolarAPPENDIX D EQUATORIAL POLAR ALIGNMENTAppendix D Equatorial Polar Alignment Precise Polar AlignmentLocating the Celestial Pole AudioStar Polar AlignmentAppendix D Equatorial Polar Alignment 6. Again note the extent of the star’s drift in declinationPeriodicErrorCorrectionPECTraining Polar Alignment and RA Drive Only PEC Update Menu OptionAppendix D Equatorial Polar Alignment PEC Train Menu OptionLatitude Chart LATITUDE CHARTAppendix E APPENDIX EAmerica NorthDeclination MagneticMAGNETIC DECLINATION GLOBAL MAP APPENDIX GAppendix G Magnetic Declination - Global Map Recycling Information EU Countries onlyCorrect Disposal of this Product Waste Electrical & Electronic EquipmentPage Page Page Limited Warranty MEADE LIMITED WARRANTY