Meade LXD 75 instruction manual Procedure #2 To correct for elevation misalignment, Position a

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Fig. 45: Position A.

Fig. 46: Position B.

Fig. 47: Cradle adjustment screws.

Important Note: The image will appear right-side-up, but reversed left-for- right, in the eyepiece of a refractor telescope. The image will appear upside-down, but correct left-for-right, in the eyepiece of a Schmidt- Newtonian telescope, if the eyepiece extends horizontally from the tube, as described in Step #3.

5.Loosen the R.A. Lock (Tip: Make sure you do not accidentally loosen the Dec. Lock. If you do, restart the procedure beginning at Step #2). Rotate the telescope 180° in the R.A. axis ONLY, until the optical tube is in position B. See Fig. 46. Note the position of your target in the eyepiece.

6.Using the Autostar Up and Down Arrow keys ONLY, move the optical tube in Dec. axis until your target is HALFWAY back to the center of the eyepiece.

7.Rotate the telescope 180° in the R.A. axis ONLY, to return the optical tube to posi- tion A. Verify that your target is in the same location in the eyepiece vertically as in the previous step (that is, it is not higher or lower or absent from the eyepiece). Ignore side-to-side misalignment (that is, if it has moved to the right or left).

8.Repeat steps 6 and 7, if necessary, alternating positions A and B, until the hori- zontal object is in the same vertical location in the eyepiece in both positions.

9.The Dec. optical axis is now calibrated to be at 90 degrees. For Procedure #2, DO NOT adjust the declination of the optical tube, either manually or with the hand- box.

Procedure #2: To correct for elevation misalignment

After performing the attitude correction, select an object that is at a very great distance (at least a mile away) to approximate infinity. Ideally, the object should be unique, with several identifiable objects to the left and right of it.

1.Rotate the mount about the R.A. axis only and move the optical tube to position A.

2.WITHOUT moving the declination axis from its position determined in the previ- ous alignment, adjust the legs, latitude, and azimuth of the tripod to center the object in the eyepiece.

Procedure #2: Step 2

Step 4

Step 5

Step 6

3.Rotate the telescope 180° in the R.A. axis ONLY, until optical tube is in position B.

4.Observe the position of the object in the eyepiece. Assuming that the declination was properly set in the previous procedure, the object should have moved only horizontally (that is, side-to-side) from its original position. It may be out of the eyepiece altogether.

5.Using the adjustment mechanism on the bottom of the cradle (Fig. 47), move the reference object approximately half the distance towards the center of the eye- piece.

To adjust the cradle screws, use the supplied hex key to loosen the two outside screws. Then adjust the position of the object by tightening or loosening the cen- ter screw. Perform this adjustment on both sets of screws. When finished, retight- en the outer screws.

Before moving the optical tube, note the location that the telescope is centered on relative to the reference object. Depending on the telescope type and acces- sories in use, you may need to move the optical tube opposite to the direction that appears in the eyepiece. The best way to be sure is to move the optical tube (using the cradle screws) a little, and verify that the correct direction was moved through the eyepiece.

6.WITHOUT moving the declination axis from its position determined in the previ- ous alignment, and WITHOUT adjusting the cradle position further, adjust the legs, latitude, and azimuth of the tripod to center the object in the eyepiece again.

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Contents LXD 75 -Series Telescopes Page Contents Telescope Features BC1 g f eD E F LXD75-SeriesYour Personal Window to the Universe $ Computer Control Panel see e LXD75 Tips Autostar Features FeaturesTour the Cosmos with Just the Push of a Button Tip Accessories How to Assemble Your TelescopeTelescope Assembly Getting StartedViewfinder assembly Newtonian reflector models C D E Balancing the TelescopeAligning the Viewfinder Choosing an EyepieceToo Much Power? Observing by Moving the Telescope ManuallyActivate the Arrow Keys Autostar Models Only Slew Speeds Autostar Models OnlyTracking Objects Setting the Polar Home PositionObserve the Moon 16bObserve a Star using the Automatic Tracking Feature TipMoving 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 Planet Saturn is over 800 million miles from the EarthAutostar Navigation Exercise To Calculate Sunset timeEntering Data into Autostar Navigating AutostarAutostars Menus Select Item ObjectMenus Object MenuUtilities Menu Event MenuGlossary Menu LXD75-SeriesSetup Menu EnterObserving Considerations Setup Menu Daylight SAVING, Surf the Web Adding Observing Sites To Add a Site to the user-defined site listTo Edit a Site Using Autostar to Find Objects Not in the Libraries To GO to a user-entered objectObserving Satellites LandmarksTo Add a landmark to the database To Check on the Available Memory To Select a landmark from the databaseTo perform a Landmark Survey Photography Few tips on photography with the LXD75-SeriestelescopesPhotography with Meade’s Autostar Suite Optional Accessories 10 f/4Series 4000 Photo-Visual Optional Autostar handbox for EC model users Maintenance General MaintenanceD e f g Page Defocused star images. Misaligned 1, 2, Aligned Page Page Specifications 5 Model SN-6AT, SN-6EC Specifications4 Model SN-8AT, SN-8EC Specifications 10 f/4 Model SN-10AT Specifications 9.3 Model AR-5AT, AR-5EC Specifications8 Model AR-6AT Specifications 10 Model SC-8AT Specifications 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 AutostarPolar Alignment Viewfinder To perform the Three-Star AlignmentMethod 2 Axis Alignment Procedures Procedure #1 To correct for attitude misalignmentProcedure #2 To correct for elevation misalignment Position aMethod 3 Axis Alignment Using Autostar TipsPEC Train Menu Option Method #4 Smart Drive Training Periodic Error CorrectionPEC Update Menu Option PEC Erase Menu OptionAppendix C Latitude Chart Appendix D EC Handbox To move the telescope using the Electronic Controller Modes of OperationSlew Speeds Tracking Rates Changing the Polar Mode Optional Autostar Computer Controller for LXD75 EC UsersHow to Attach the Optical Tube to the Mount Mounting the SC bracket and optical tube to the mountObjects in Space Appendix F Basic AstronomyAutostar Glossary MoonPlanets Deep-Sky ObjectsFurther Study Page Page Meade Limited Warranty
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LXD 75 specifications

The Meade LXD 75 is an advanced telescope mount designed for both amateur and professional astronomers looking to explore the wonders of the night sky. Known for its precision and ease of use, the LXD 75 offers several features and technologies that make it a standout choice for astrophotography and visual observation alike.

At the heart of the Meade LXD 75 is its robust equatorial mount, which provides stable tracking of celestial objects. This mount is both lightweight and durable, allowing for easy transport to observing sites. The equatorial design is especially beneficial for astrophotography, as it compensates for the Earth's rotation, enabling longer exposure times without the trailing effects commonly associated with less sophisticated mounts.

One of the most notable features of the LXD 75 is its dual-axis tracking system. This system allows users to electronically control the telescope's movements along both the right ascension and declination axes. The built-in Data Sky control panel is user-friendly, offering intuitive access to a wealth of astronomical data, including over 30,000 celestial objects. This makes locating and tracking objects in the sky simpler and more efficient.

The LXD 75 also supports a variety of telescope configurations, accommodating optical tubes up to 10 inches in diameter. This versatility makes it suitable for a range of viewing preferences, from planetary observations to deep-sky astrophotography. The mount's heavy-duty construction ensures it can handle the weight of larger telescopes while maintaining stability.

In terms of technology, the Meade LXD 75 is equipped with AutoStar computer technology. This innovative feature enables automatic location and tracking of celestial bodies using a simple pointing and clicking interface. Users can also create custom observing lists, making it easier to plan and execute dedicated viewing sessions.

Additionally, the LXD 75 boasts robust connectivity options, including the ability to integrate with a wide range of imaging software and accessories, making it a great choice for those interested in advanced astrophotography techniques. The mount's compatibility with Meade's own range of cameras and filters further enhances its potential for capturing stunning images of the universe.

In conclusion, the Meade LXD 75 is a well-rounded telescope mount that combines advanced technology with user-friendly features. Its equatorial design, dual-axis tracking, and AutoStar system make it an excellent choice for both novice and experienced astronomers. Whether for visual observation or astrophotography, the LXD 75 offers the performance and versatility to enhance any stargazing experience.
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