Meade RCX400TM instruction manual Follow these steps for collimation of the optical system

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rings; these are called diffraction rings. Focus until the diffraction rings fills about 10% of the eyepiece field-diameter. If the dark central spot is offset in (i.e., not concentric with) the diffraction rings, your telescope’s optical system is misaligned and requires collimation.

Follow these steps for collimation of the optical system:

The only adjustments possible, or necessary, on the RCX400 models is performed with the AutoStar handbox. No adjustment screws are necessary, as with traditional telescopes. A high-powered eyepiece, such as a 9mm eyepiece, or a 9mm eyepiece with a 2x barlow, is required for collimation. A good rule of thumb to follow is to select the highest power eyepiece you will use with your telescope, and double it (a 2x bar- low is ideal for doubling). See Fig. 48 below, to see images of an aligned and mis- aligned image.

a.Select the “Collimation” option in the Setup/Telescope menu. Once this option is selected, you will be able to use Autostar’s Arrow keys to adjust the image of the star you have selected.

b.While looking through the eyepiece, Use Autostar II's Arrow keys at the slowest slew speed, begin to move the defocused center ring so that the rings become more concentric. You will most likely need to press more than one Arrow key.

c.You will notice that the star image will move across the field of view of the eye- piece. If while using the Arrow key, the defocused star image moves out of the eyepiece field, press MODE to temporarily leave the collimation menu.

d.When you have left the “Collimation” menu, use the Arrow keys to bring the image back to the center of the eyepiece field.

e.Press ENTER to select the “Collimation” option again.

f.Use the Arrow keys to continue to adjust the image until it become concentric. If the image moves out of the eyepiece field, perform steps c through e as many times as necessary.

g.Carefully examine the concentricity of the diffraction rings. Always double check the image in the center of the field of the eyepiece. The star point should appear as a small central dot (commonly referred to as an “Airy disc”) with a diffraction ring surrounding it. You now have the best alignment of the optics possible with this telescope.

Set Default and Restore Default Options: The factory has collimated your telescope and saved the settings in the Restore Default option. You may retain this setting and recall it if the telescope needs collimation. Or you may overwrite this setting using the Set Default option after performing precise collimation and recall it again when need- ed with the Restore Default option.

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Fig. 48: Defocused star images. Misaligned (1, 2), Aligned (3).

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Contents MEADE.COM Focusing the Telescope How to Hot Swap the Autostar II HandboxContents Tighten the adjustment lock Attach the legs of the tripod to the baseRotate the leg Hook the Release PinInstall the batteries Position the mount over the tripodSecure the mount with the T-handle Move the optical tube from its shipping positionAttach the visual back and diagonal mirror Insert the eyepiece and remove dust coverPlug in the AutoStar II handbox Turn on AutoStarTo exit the focus operation 1. Press Mode Point and Observe Tighten the R.A. and Dec. LocksTelescope Features FanViewfinder close up RCX400 Your Personal Window to the Universe Base Computer Control Panel see jDefinitions Viewfinder Tour the Cosmos with Just the Push of a Button Autostar II FeaturesLibrary # of Objects About changing slew RCX400 Tips Parts Listing How to Assemble the TripodHow to Assemble Your Telescope Getting StartedTo attach AutoStar II and connect the handbox holder To attach the diagonal mirror and the eyepieceMounting and Focusing the Viewfinder for the First Time Aligning the ViewfinderPresets ObservingChoosing an Eyepiece To focus the telescope eyepieceTo define a preset To select a previously defined focus presetTo sync on a focus preset Observing by Moving the Telescope ManuallyTerrestrial Observing Observing Using Autostar IIs Arrow KeysSlew Speeds Observe the Moon Astronomical ObservingTo Track an Object Automatically Moving Through Autostar II’s MenusWhich One’s the Alignment Star? Using the Guided Tour Observe a Star using the Automatic Tracking FeatureGo To Saturn RCX400 Info Autostar II Navigation Exercise Basic AutostarTo Calculate Sunset time Example of Locating a menu Navigating AutostarAutostar Select Item ObjectObject Menu To slew the telescope to catalog objectsEvent Menu DefinitionGlossary Menu Utilities MenuSetup Menu Look into the FuturePage Adding and editing sites? Setup Menu Daylight SAVING, Hot Button Menus To Add a Site to the user-defined site list Adding Observing SitesTo Edit a Site Creating User Objects To GO to a user-entered objectLandmarks Observing SatellitesTo Add a landmark to the database Identify To Select a landmark from the databaseTo perform a Landmark Survey To check on the available amount of memory in AutostarBrowse Displayed information ExampleHow to perform the Easy Align Procedure Alternate Alt/Az AlignmentsInitialize Autostar Easy Two-Star AlignmentTo Download the Latest Version of Autostar II Software One-Star Alt/Az AlignmentTo Set the Home Position Manually Periodic Error Correction Update Menu OptionTrain Menu Option Erase Menu OptionPhotography Few tips on photography with the RCX400 telescopesPhotography with a Digital Camera Photography with Meade’s AutoStar SuiteImage of M13 captured with the Deep Sky Imager Optional Accessories Meade Series 4000 EyepiecesSeries 4000 8 24mm Zoom Eyepiece Star Charts Collimation MaintenanceTest your Collimation Follow these steps for collimation of the optical system Defocused star images. Misaligned 1, 2, AlignedInspecting the Optics Meade Customer ServiceGauging the Movement of the Telescope 10 f/8 RCX400 Specifications 12 f/8 RCX400 Specifications14 f/8 RCX400 Specifications Advanced Autostar II System Specifications Autostar II Handbox SpecificationsEquatorial Alignment Setting CirclesCelestial Coordinates Declination Setting Circle Equatorial WedgeLining Up with the Celestial Pole Locating PolarisPrecise Polar Alignment RCX400 mounted on an equatorial wedgeAutostar II Polar Alignment Easy Polar AlignmentOne-Star Polar Alignment Two-Star Polar AlignmentAppendix B Latitude Chart Latitude Chart for Major Cities of the WorldCity State/Prov./Country Latitude City Country LatitudeCommand Line What you will needTour Modes Comment LineWriting a Tour TitlePick ONE / Pick END Pick END Auto Slew on / Auto Slew OFF Downloading ToursAppendix D Training the Drive Further StudyTo observe the Apollo 15 landing site using the Moon option Appendix E the Moon MenuAppendix F IntroductionOperation TrainingUpdate Permanently Mounted ScopesOther Menus Options Save As and Load OffBasic Astronomy Autostar II GlossaryObjects in Space MoonPlanets Deep-Sky ObjectsPage Meade Limited Warranty

RCX400TM specifications

The Meade RCX400TM is a sophisticated telescope designed for serious astronomers and astrophotographers seeking exceptional performance and innovative features. Combining advanced optics with user-friendly technology, the RCX400TM stands out as a powerful tool for both amateur and experienced stargazers.

At the heart of the RCX400TM is its revolutionary Ritchey-Chrétien optical design. This design minimizes optical aberrations, resulting in sharp, high-contrast images across the field of view. The telescope features a large aperture, typically around 10 inches, which allows for the observation of faint celestial objects, including distant galaxies, star clusters, and nebulae. The high-quality optics ensure that users can capture stunning details and nuances of their targets.

One of the standout characteristics of the RCX400TM is its advanced AutoAlign technology. This feature simplifies the setup process by automatically aligning the telescope to the night sky, enabling users to start observing in a matter of minutes. This is particularly beneficial for beginners or those who prefer a hassle-free experience when setting up for observations.

Additionally, the telescope is equipped with the Meade Smart Drive system, which enhances tracking accuracy and allows for long exposure astrophotography without the worry of trailing or blurring. This system compensates for periodic errors and undergoes continuous monitoring, ensuring that the telescope maintains precise alignment while tracking celestial objects.

The RCX400TM also incorporates an intuitive user interface with a large, easy-to-read LCD display. This interface allows users to access a comprehensive database of celestial objects, making it simple to locate and observe a wide range of astronomical phenomena. With its compatibility with various Meade accessories, such as cameras and filters, the RCX400TM provides flexibility for users looking to expand their astrophotography capabilities.

Durability is another significant aspect of the RCX400TM. Its robust construction ensures that it can withstand various outdoor conditions, making it suitable for both backyard observations and expeditions to remote dark sites.

In summary, the Meade RCX400TM is designed for those who demand high-performance optics, advanced technology, and ease of use. With features like the Ritchey-Chrétien optical design, AutoAlign technology, and the Smart Drive system, it offers a remarkable viewing experience that brings the wonders of the universe closer to all who gaze through its eyepiece. Whether for casual observation or serious astrophotography, the RCX400TM is poised to satisfy the needs of astronomy enthusiasts worldwide.
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