Meade ETX-90PE instruction manual Telescope dimensions 43cm x 25cm x 20cm 17 x 10 x

Page 48

SmartFinder. . . . . . . . . . . Red dot projected onto finder’s lens LNT Module . . . . . . High accuracy, temperature-compensated

. . . . . . . . . . . . . . . . . oscillator, updatable using Meade’s

. . . . . . . . . . . . . . . . . . . . . . . . optional ATUM accessory Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 volts DC Motor Drive System . . . DC servo motors with encoders, both axes Bearings:

Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ball bearings Azimuth . . . . PTFE thrust bearing and radial ball bearing

Materials:

Tube body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . aluminum Mounting . . . . . . ABS, with internal aluminum structure Primary mirror. . . . . . . . . . . . . . . . . . . . . . . . Pyrex® glass Correcting lens . . . . . . . . . . . BK7 optical glass, Grade-A

Telescope dimensions:

. . . . . . . . . . . . . 43cm x 25cm x 20cm (17” x 10” x 8”)

Telescope net weight:

(incl. AutoStar & batteries) . . . . . . . . . . . 6.1kg (13.5 lbs) Telescope shipping weight. . . . . . . . . . . . . . . . 8.3kg (18.4 lbs) Battery Life (approx.):

with AutoStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 hrs

Specifications: ETX-125PE Astro Telescope

Optical design . . . . . . . . . . . . . . . . . . . . Maksutov-Cassegrain Primary mirror diameter . . . . . . . . . . . . . . . . . . 138mm (5.43”) Clear aperture. . . . . . . . . . . . . . . . . . . . . . . . . . . 127mm (5.0”) Focal length . . . . . . . . . . . . . . . . . . . . . . . . . . 1900mm (74.8”) Focal ratio (photographic speed) . . . . . . . . . . . . . . . . . . . . f/15 Near focus (approx) . . . . . . . . . . . . . . . . . . . . . . . . 4.6m (15 ft) Resolving power . . . . . . . . . . . . . . . . . . . . . . . . . . 0.9 arc secs Super multi-coatings (EMC) . . . . . . . . . . . . . . . . . . . . standard Limiting visual stellar magnitude (approx.) . . . . . . . . . . . . 12.5 Image scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.76°/inch Maximum practical visual power . . . . . . . . . . . . . . . . . . . 500X Optical tube dimensions

(dia. x length) . . . . . . . . . . 14.6cm x 36cm (5.75” x 14.2”) SmartFinder . . . . . . . . . . . . . . . . . . . . . . 8 x 25mm right-angle Secondary mirror obstruction (dia.; %) . . 39.4mm (1.6”); 9.6% Telescope mounting . . . . . . . . . . . . . . . . fork type; double tine Setting circle diameters. . . . . . . . . . . . . . . . Dec.: 4.3”; R.A.: 9” SmartFinder. . . . . . . . . . . Red dot projected onto finder’s lens LNT Module . . . . . . High accuracy, temperature-compensated

. . . . . . . . . . . . . . . . . oscillator, updatable using Meade’s

. . . . . . . . . . . . . . . . . . . . . . . . optional ATUM accessory Input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 volts DC Motor Drive System . . . DC servo motors with encoders, both axes Bearings:

Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ball bearings Azimuth . . . . . . . . . . . . . . . . . . . . . . . . . . . . ball bearings

Materials:

Tube body . . . . . . . . . . . . . . . . . . . . . . . . . . . . . aluminum Mounting . . . . . . . ABS, with internal aluminum structure Primary mirror. . . . . . . . . . . . . . . . . . . . . . . . Pyrex® glass Correcting lens . . . . . . . . . . . BK7 optical glass, Grade-A

Telescope dimensions:

. . . . . . . . . . 48cm x 23cm x 27cm (19” x 8.9” x 10.8”)

Telescope net weight:

(incl. AutoStar & batteries) . . . . . . . . . . . 6.9kg (15.2 lbs) Telescope shipping weight. . . . . . . . . . . . . . . 11.4kg (25.2 lbs) Battery Life (approx.):

48

with AutoStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 hrs

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Contents ETX Premier Edition Telescope Series Page Contents QUICK-START Guide Enter Key Scroll Scroll Up Down Telescope Features B and FigAscension and Declination setting circles? See Telescope ControlsSmartfinder SmartFinder? See AligningComputer Control Panel see Fig DefinitionsAlt/Az, Right Ascension, Autostar Features Tour the Cosmos with Just the Push of a ButtonAutoStar to the topmost screen Select Item Object ETX Tips About changing slewParts Listing How to Assemble Your Telescope and TripodGetting Started Using SmartFinder Aligning SmartFinderToo Much Power? Choosing an EyepieceObserving Using AutoStar Arrow Keys ObservingObserving by Moving the Telescope Manually Terrestrial ObservingSlew Speeds Astronomical ObservingObserve the Moon To Track an Object AutomaticallyHow to perform the Automatic Alignment procedure Initializing AutoStar for the First TimeAutomatic Alignment Observe a Star using the Automatic Tracking Feature Which One’s the Alignment Star?Using the Guided Tour Go To SaturnAutostar Operation AutostarAutoStar Navigation Exercise To Calculate Sunset timeEntering data into AutoStar Look into the FutureAutostars Menus Select Item ObjectObject Menu Object Menu options includeUse the Object menu to select an object from the database Observing Satellites? SeeEvent Menu Glossary MenuUse the Event menu Use the Glossary menuUtilities Menu TipsSetup Menu Periodic Error Correction? See Tip Adding and editing sites? See ShiftAdvanced Autostar Operation Adding Observing SitesTo Add a Site to the user-defined site list To Edit a SiteUsing AutoStar to Find Objects Not in the Database Observing SatellitesTo GO to a user-entered object How to Create Your Own Guided Tour What you will needTour Modes Command Line Comment LineWriting a Tour Moon Landmarks Downloading ToursIdentify To Add a landmark to the databaseTo Select a landmark from the database To perform a Landmark SurveyAdvanced Alt/Az Alignment Displayed information ExampleTwo-Star Alt/Az Alignment and Easy Align Smart Drive Training Periodic Error Correction One-Star Alt/Az AlignmentPEC Train Menu Option PEC Update Menu Option BrowsePEC Erase Menu Option Photography Photography with a 35mm CameraFew Tips on Photography Photography with a Digital CameraPhotography with Meade’s AutoStar Suite Deep Sky ImagerOptional Accessories #505 Cable Connector Kit With Meade AstroFinder#932 45 Erecting Prism Maintenance Troubleshooting Storage and TransportInspecting the Optics Meade Customer Service Telescope does not track a celestial objectSpecifications Specifications ETX-90PE Astro TelescopeSpecifications ETX-105PE Astro Telescope Telescope dimensions 43cm x 25cm x 20cm 17 x 10 x Specifications ETX-125PE Astro TelescopeAutoStar Specifications AutoStar DimensionsEquatorial Alignment Celestial CoordinatesLoosen control latch Set latitude Locating Polaris Appendix B Latitude Chart Latitude Chart for Major Cities of the WorldCity State/Prov./Country Latitude City Country LatitudeAppendix C Training the Drive Further StudyAppendix Dchanging the LNT Module Battery To replace the batteryAppendix Ebasic Astronomy AutoStar GlossaryMoon Planets Deep-Sky ObjectsPage Meade Limited Warranty

ETX-90PE specifications

The Meade ETX-90PE is a well-regarded telescope that combines portability and performance, making it a popular choice among both amateur astronomers and seasoned stargazers. Its compact design and advanced features make it an ideal instrument for those who seek to explore the night sky with ease.

At the heart of the ETX-90PE is its Maksutov-Cassegrain optical design, which utilizes a spherical primary mirror and a corrector lens to deliver exceptional image quality. With a focal length of 1250mm and a 90mm aperture, it strikes a balance between light-gathering ability and magnification, allowing users to observe celestial objects such as planets, star clusters, and distant galaxies in remarkable detail. The telescope's focal ratio of f/13.9 provides crisp and sharp views, making it particularly well-suited for planetary observation.

One of the standout features of the ETX-90PE is its Electronic Control System (ECS), which allows for easy and intuitive operation. The telescope is equipped with a built-in AutoStar Computerized GoTo mount, enabling users to locate and track over 30,000 celestial objects with just a few simple commands. With automatic alignment features, even beginners can get started quickly, making the wonders of the universe accessible to everyone.

Portability is a key characteristic of the Meade ETX-90PE. Weighing in at a mere 12.5 pounds, it can be easily transported to dark sky locations. Its compact design not only translates to ease of transport but also means it can be stored conveniently when not in use. The included sturdy aluminum tripod provides stable support, even during extended observation sessions.

The ETX-90PE further enhances the user experience with its high-quality accessories. It comes with a set of eyepieces, including a 26mm Super Plössl and a 9.7mm Plössl, allowing for various magnifications to suit different observing preferences. The telescope also features a built-in flip mirror, allowing for easier viewing through both the eyepiece and a camera, making astrophotography more accessible.

Additionally, the ETX-90PE is designed with user comfort in mind. The telescope offers adjustable slow-motion controls for fine-tuning views and an optical finder scope to help locate objects before zooming in. With robust construction, excellent optics, and a range of advanced features, the Meade ETX-90PE stands out as a versatile, high-quality telescope for both casual observers and serious astronomers alike. Its combination of technology and user-friendly functions makes it an enduring favorite for anyone looking to embark on a journey through the cosmos.
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