Meade DSX Series instruction manual Specifications, DSX-90AT

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SPECIFICATIONS

DSX-90AT

Optical design . . . . . . . . . . . . . . . . . . . Maksutov-Cassegrain Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90mm (3.5”) Focal length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1250mm Focal ratio (photographic speed). . . . . . . . . . . . . . . . . . f/13.8 Near focus (approx) . . . . . . . . . . . . . . . . . . . . . 11.5 ft (3.5m) Resolving power . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 arc secs Super multi-coatings (EMC) . . . . . . . . . . . . . . . . . . . standard Limiting visual stellar magnitude (approx.) . . . . . . . . . . . . 11.7 Image scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.16°/inch Maximum practical visual power . . . . . . . . . . . . . . . . . . 325X Optical tube dimensions

(dia. x length) . . . . . . . . . . 10.4cm x 27.9cm (4.1” x 11”) Eyepiece . . . . . . . . . . . . . . . . . . . . . . . . . Super Plössl 26mm Viewfinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 x 21mm Secondary mirror obstruction (dia.; %) . . 27.9mm (1.1”); 9.6% Telescope mounting. . . . . . . . . . Single-arm, motorized Alt-Az Battery (user-supplied) . . . . . . . . . . . . . . . . . . . . . . . . 8 x AA

DSX-125AT

Optical design . . . . . . . . . . . . . . . . . . . Maksutov-Cassegrain Diameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125mm (4.9”) 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”) Eyepiece . . . . . . . . . . . . . . . . . . . . . . . . . Super Plössl 26mm Viewfinder. . . . . . . . . . . . . . . . . . . . . . . 8 x 25mm right-angle Secondary mirror obstruction (dia.; %) . . 39.4mm (1.6”); 9.6% Telescope mounting. . . . . . . . . . Single-arm, motorized Alt-Az Battery (user-supplied) . . . . . . . . . . . . . . . . . . . . . . . . 8 x AA

Autostar Specifications

Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . 68HC11, 8MHz Flash Memory . . . . . . . . . . . . . . . . . . . . . . . 1MB, reloadable Keypad . . . . . . . . . . . . . . . . . . . . . . . . . 20 key alphanumeric Display . . . . . . . . . . . . . . . . . . . . . . 2 line, 16 character LCD Backlight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Red LED Utility Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yes RS-232 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Yes Coil Cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24" Database . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30,223 objects

Autostar Dimensions

Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.56" (16.6cm) Width (LCD end) . . . . . . . . . . . . . . . . . . . . . . . . 3.19" (80cm) Width (Connector end). . . . . . . . . . . . . . . . . . . . 2.25" (57cm) Depth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.81" (21cm) Autostar net weight . . . . . . . . . . . . . . . . . . . 1.12 lbs (0.51kg)

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Contents Meade Instruments Corporation Page Contents QUICK-START Guide Slew Speed C D Telescope Features Altitude Setting Circle and LockComputer Control Panel c DSX Autostar Handbox Tour the Cosmos with Just the Push of a Button Autostar FeaturesJoin an Astronomy Club Attend a Star Party DSX TipsHow to Assemble Your Telescope Getting StartedPacking List Focusing the Viewfinder ViewfinderDSX-90 8 x 21mm Erect-Image Viewfinder DSX-125EC Viewfinder Choosing an EyepieceDSX-90 Viewfinder Screws 4 and 6,Location of telescope eyepiece Too Much Power?Terrestrial Observing Observing Using Autostars Arrow KeysObserving Observing by Moving the Telescope ManuallyTo Track an Object Automatically Slew SpeedsObserve the Moon Astronomical ObservingAlt/Az Home Position Moving Through Autostar’s MenusInitializing Autostar Easy Two-Star Align Observe a Star using the Automatic Tracking FeatureWhich One’s Alignment Star? How to Easy Align Your TelescopeTake a Guided Tour Two-Star Alt/Az AlignmentOne-Star Alt/Az Alignment Go To SaturnAutostar Navigation Exercise Basic Autostar OperationTo Calculate Sunset time Adjusting the Speed of a Scrolling MessageEntering data into Autostar Navigating AutostarObject Menu Menus and Menu OptionsEvent Menu Glossary Menu Utilities MenuObserving Considerations Enter Setup MenuSurf the Web Menu Daylight SAVING, Page To Edit a Site Advanced Autostar FeaturesAdding Observing Sites To Add a Site to the user-defined site listTour Modes How to Create Your Own Guided TourCommand Line What you will needTitle Writing a TourPick ONE / Pick END To Select a landmark from the database LandmarksDownloading Tours To Add a landmark to the databaseDisplayed information Example IdentifyTo perform a Landmark Survey To check on the available amount of memory in Autostar Look into the Future BrowseDSX-90EC Optional AccessoriesCaring for Your Telescope Meade Customer ServiceDSX-90AT SpecificationsLocating the Celestial Pole Celestial CoordinatesTo GO to a user-entered object Using Autostar to Find Objects Not in the DatabaseObserving Satellites Appendix CTraining the Drive Appendix DAutostar Glossary Objects in SpaceMoon Deep-Sky Objects PlanetsPage Page Meade Instruments Corporation