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Meade LXD75 instruction manual 6 f/5 Model SN-6AT, SN-6EC Specifications

Models: LXD75

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SPECIFICATIONS

SPECIFICATIONS

6" f/5 Model SN-6AT, SN-6EC Specifications

Optical design	Schmidt-Newtonian
Clear aperture	6" (152mm)
Focal length	762mm
Focal ratio (photographic speed)	f/5
Resolving power	0.74 arc secs
Coatings	Meade EMC Super Multi-Coatings
	Ultra-High Transmission Coating optional
Mounting	Die-cast aluminum
Input Voltage	12v DC
Alignment	German-type equatorial mount
Slew Speeds	SN-8: 1x sidereal to 4.5°/sec
	in 9 increments
	SN-8EC: 2x sidereal to 4.5°/sec
	in 4 increments
Tripod	Variable-height field tripod
Accessories	8 x 50mm finder
	T-Adapter
	Super Plössl 26mm eyepiece
	1.25" and 2" eyepiece holders
	Battery pack for 8 D-cell batteries
	(user-supplied)
	SN-6: Autostar Controller
	SN-6EC: Electronic Controller
Polar Finder Reticle Batteries	Maxell LR41 or equivalent
Net telescope weight	13 lbs.
Net tripod weight	35 lbs.

8" f/4 Model SN-8AT, SN-8EC Specifications

Optical design	Schmidt-Newtonian
Clear aperture	8" (203mm)
Focal length	812mm
Focal ratio (photographic speed)	f/4
Resolving power	0.56 arc secs
Coatings	Meade EMC Super Multi-Coatings
	Ultra-High Transmission Coating optional
Mounting	Die-cast aluminum
Input Voltage	12v DC
Alignment	German-type equatorial mount
Slew Speeds	SN-8: 1x sidereal to 4.5°/sec
	in 9 increments
	SN-8EC: 2x sidereal to 4.5°/sec
	in 4 increments
Tripod	Variable-height field tripod
Accessories	8 x 50mm finder
	T-Adapter
	Super Plössl 26mm eyepiece
	1.25" and 2" eyepiece holders
	Battery pack for 8 D-cell batteries
	(user-supplied)
	SN-8: Autostar Controller
	SN-8EC: Electronic Controller
Polar Finder Reticle Batteries	Maxell LR41 or equivalent
Net telescope weight	24 lbs.
Net tripod weight	45 lbs.

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Meade LXD75 instruction manual 6 f/5 Model SN-6AT, SN-6EC Specifications, 8 f/4 Model SN-8AT, SN-8EC Specifications

Contents

Instruction Manual LXD 75 -Series TelescopesPage CONTENTS e d B d BC1 g f eFig. 1d The LXD75-Series Mount insert shows opposite side of Mount 1&3$C A B D E F Fig. 1e The LXD75-Series Computer Control Panel see 2$ aboveLXD75-SeriesYour Personal Window to the Universe 2$ Computer Control Panel see Fig. 1e LXD75 TIPS Join an Astronomy Club, Attend a Star PartyI G K J AUTOSTAR FEATURESFeatures Tour the Cosmos with Just the Push of a ButtonPress MODE again to return to the previous menu Note Pressing MODE repeatedly while in the “Select Item” level movesLocal Time and Local Sidereal Time LST Timer and Alarm Status Autostar to the topmost screen “Select Item Object.”How to Assemble Your Telescope GETTING STARTEDAttach viewfinder bracket Achromatic refractor, Schmidt-Newtonian and A B C D E F Note Remember to turn off the LED when you are not using the reticleBalancing the Telescope Choosing an Eyepiece Aligning the ViewfinderFig. 14b Viewfinder assembly, Newtonian models Too Much Power? Observing by Moving the Telescope ManuallyLXD75 TIPS Slew Speeds Autostar Models Only Activate the Arrow Keys Autostar Models Onlyx sidereal 0.5 arc-min/sec or 0.008/sec Observe the Moon Setting the Polar Home PositionTracking Objects Using Autostars GO TO Capabilities Autostar Models Only Observe a Star using the Automatic Tracking FeatureWhich One’s the Alignment Star? Moving Through Autostar’s Menus Autostar Models Only Initializing Autostar Autostar Models OnlyTraining the Drive Autostar Models Only Easy Alignment Autostar Models Only Go To Saturn Autostar Models OnlyUsing the Guided Tour Autostar Models Only BASIC AUTOSTAR OPERATION Autostar Navigation ExerciseExample A ut o starLook into the Future Entering Data into AutostarNavigating Autostar LXD75 TIPSSelect Item Object AUTOSTARS MENUSSelect Item Setup Select Item EventMENUS Object MenuUtilities Menu Event MenuGlossary Menu Never use a MeadeSetup Menu LXD75 TIPS Observing Considerations Note Autostar compensates for daylight savings time, if selected. See c. Custom Allows entry of user-defined tracking ratesSurf the Web LXD75 TIPSAdding Observing Sites USEFUL AUTOSTAR PROCEDURESUsing Autostar to Find Objects Not in the Libraries To GO TO a user-entered objectLandmarks Observing SatellitesTo Add a landmark to the database To Select a landmark from the database To Check on the Available MemoryTo perform a Landmark Survey d C B PHOTOGRAPHYFig. 26 #905 Variable Polarizer OPTIONAL ACCESSORIESFig. 24 Series 4000 Eyepieces Fig. 25 #140 2x Barlow Lens Fig. 27 Series 4000 8 - 24mm Zoom EyepieceFig. 28 Series 4000 Photo-Visual Fig. 29 Series 4000 Nebular Filters Fig. 30 Optional Autostar handbox for EC model users Alignment Collimation of the Schmidt-Newtonian Optical System General MaintenanceMAINTENANCE b c d e f g Fig. 31b The four collimation screws on the diagonal mirror housingAlignment Collimation of the Schmidt-Cassegrain Optical System Caution Do not force the three collimation Fig. 33a Defocused star images. Misaligned 1, 2, AlignedAlignment Collimation of the Newtonian Reflector Optical System Page 6 f/5 Model SN-6AT, SN-6EC Specifications SPECIFICATIONS8 f/4 Model SN-8AT, SN-8EC Specifications 5 f/9.3 Model AR-5AT, AR-5EC Specifications 10 f/4 Model SN-10AT Specifications6 f/8 Model AR-6AT Specifications 8 f/10 Model SC-8AT Specifications 6 f/5 Model N-6EC SpecificationsMeade Customer Service Autostar SpecificationsAutostar Dimensions Inspecting the OpticsSetting Circles APPENDIX A CELESTIAL COORDINATESOne-Star Polar Alignment Locating the Celestial PolePolar Alignment Two-Star Polar AlignmentEnhancement Methods Method #1 Three-Star Alignment Using AutostarThe Polar Alignment Viewfinder APPENDIX B ENHANCING POINTING PRECISIONMethod 2 Axis Alignment Procedures eyepiece when promptedProcedure #2 To correct for elevation misalignment Method 3 Axis Alignment Using Autostar PEC Update Menu Option Method #4 Smart Drive Training Periodic Error CorrectionImportant Note The Train option overwrites any previous PEC data PEC Train Menu OptionEUROPE APPENDIX C LATITUDE CHARTNORTH AMERICA SOUTH AMERICALight No APPENDIX D EC HANDBOXImportant Note Light StatusModes of Operation See pages 17 and 18 for more informationTo move the telescope using the Electronic Controller Slew SpeedsNote The tracking rate can be decreased by up to 65% Note The tracking rate can be increased by up to 65%Tracking Rates Note The tracking rate can be increased by up to 65% Changing the Polar ModeFig. 53 Indicator Light Key for Changing the Polar Mode Note The tracking rate can be decreased by up to 65%APPENDIX E MOUNTING THE MODEL SC-8 SCHMIDT- CASSEGRAIN OPTICAL TUBE How to Attach the Optical Tube to the MountObjects in Space APPENDIX F BASIC ASTRONOMYAutostar Glossary The MoonDeep-Sky Objects PlanetsFig. 59 The Pleiades is one of the most beautiful open clusters Topics Further StudyLXD75 TIPS BooksPage MEADE LIMITED WARRANTY 14-7500-01 9/04B