Meade LX90 instruction manual Astronomical Observing, To Track an Object Automatically

Page 18

Initialization is a procedure that ensures that AutoStar operates correctly. When you first use AutoStar, it doesn't yet know where the observation location site is.

During the procedure, you will enter

the observation l ocation or zip code. AutoStar uses this information, along with the time and date information provided by the LNT module, to precisely calculate the location of celestial objects (such as stars and planets) and to move your telescope correctly for various operations.

Important Tip:

It is recommended that you train you telescope’s drive the first time you align your telescope. Training the drive improves your telescope’s pointing precision.

For more information about pointing your telescope, see page 53 for more information.

Astronomical Observing

Used as an astronomical instrument, your telescope has many optical and electromechanical capabilities. It is in astronomical applications where the high level of optical performance is readily visible. The range of observable astronomical objects is, with minor qualification, limited only by the observer’s motivation.

To Track an Object Automatically

As the Earth rotates beneath the night sky, the stars appear to move from East to West. The speed at which the stars move is called the sidereal rate. You can setup your telescope to move at the sidereal rate so that it automatically tracks the stars and other objects in the night sky. If the telescope is not tracking an astronomical object, the object will drift out of the eyepiece field of view. The tracking function automatically keeps an object more or less centered in the telescope’s eyepiece.

To automatically track objects, you must initialize AutoStar, and then select "Targets: Astronomical" from the AutoStar Setup menu. You must also learn how the AutoStar keypad operates in order to move through the AutoStar menus.

Moving Through AutoStar’s Menus

The AutoStar database is organized in levels for quick and easy navigation.

Press ENTER to go deeper into AutoStar's menu levels.

Press MODE to move back toward the top menu level.

Press the Scroll keys to move up and down through the options available for each level.

Press the Arrow keys to enter characters and digits.

The Arrow keys are also used to move the telescope.

Initializing AutoStar for the First Time

This section describes how to initialize AutoStar. Perform this procedure the first time you use AutoStar or after performing a Reset (see RESET,” page 29).

AutoStar will ask you to choose your observing location (or zip code) and your telescope’s model number from the list it displays. You will be prompted to enter this information only the first time you use AutoStar. If you wish to change your location information (or if AutoStar does not ask you for this information information the first time that you use it), go to the Site option of the Setup Menu to select your location. See page 30 for more information.

1.Tighten the vertical and horizontal locks (6 and 9, Fig. 1) if necessary.

2.Make sure that AutoStar is connected to the HBX port (C, Fig. 2) and SmartFinder is connected to an AUX port (D, Fig. 2) of the telescope’s computer control panel.

3.Flip the telescope power switch (A, Fig. 2) to the ON position.

The AutoStar screen displays a copyright message, followed by a short beep. Then AutoStar takes a few moments to start up the system.

4.A message displays that warns not to look at the Sun. At the end of this message, press the key prompted by AutoStar to signify that the message has been read and understood.

5.The Getting Started menu displays a scrolling message. Press ENTER (2, Fig. 2) to bypass the Help tutorial and continue with initialization.

6.AutoStar then displays: “Location Option: 1-Zipcode 2-City”. This option allows you to

choose how you wish to enter the location of your observing site: You can enter your zip code or choose the site from a list of countries, states and cities.

Press the number key “1” if you wish to enter by zip code. Then enter the five digits of the zip code of your observing site and press ENTER.

Press the number key “2” if you wish to select your observing site from a list of country, states and cities. First, use a Scroll key to cycle through the list of countries and states (listed alphabetically). Press ENTER when the correct location displays. Next, use a Scroll key to cycle through the list of cities (also listed alphabetically). Press ENTER when the closest city displays.

7.AutoStar then requests the telescope model number. Use the Scroll keys to cycle through the database of models. Press ENTER when your model number displays.

8.System initialization is complete and the screen reads "Align: Automatic."

18

Image 18
Contents LX90 Schmidt-Cassegrain Telescope Meade Schmidt-Cassegrain Optical System Contents QUICK-START Guide ON/OFF Telescope Features E DPage To Attach the Handbox Holder Autostar Features Tour the Cosmos with Just the Push of a ButtonTopmost screen Select Item Object Page How to Attach the Tripod to the Telescope Assembly Getting StartedHow to Assemble Your Telescope Precautionary notes for the tripodUsing SmartFinder Choosing an EyepieceAligning SmartFinder Aligning the ViewfinderObserving By Moving the Telescope Manually Observing Using AutoStars Arrow KeysObserving Terrestrial ObservingSlew Speeds Observe the MoonMoving Through AutoStar’s Menus Astronomical ObservingTo Track an Object Automatically Initializing AutoStar for the First TimeAutomatic Alignment Observe a Star using the Automatic Tracking FeatureHow to perform the Automatic Alignment procedure While it does soUsing the Guided Tour Go To SaturnBasic Autostar Operation AutoStar Navigation ExerciseEntering Data into AutoStar Navigating AutoStarTo Calculate Sunset time AUTOSTAR’S Menus Select Item ObjectMenus and Menu Options Object MenuEvent Menu Glossary MenuUtilities Menu Observing Considerations Setup Menu Time Zone Shift Menu Daylight SAVING, To Add a Site to the user-defined site list Advanced Autostar FeaturesAdding Observing Sites To Edit a SiteUsing AutoStar to Find Objects Not in the Database Observing Satellites To GO to a user-entered objectWhat you will need How to Create Your Own Guided TourCommand Line Tour ModesWriting a Tour TitlePick END To Add a landmark to the database LandmarksDownloading Tours To Select a landmark from the databaseTo perform a Landmark Survey IdentifyAdvanced Alt/Az Alignment To check on the available amount of memory in AutoStarBrowse Two-Star Alt/Az AlignmentOne-Star Alt/Az Alignment Photography with the LX90 Few tips on photography with the LX90Photography with a Digital Camera Photography with Meade’s AutoStar Suite Meade Deep Sky ImagerSuper Wide Angle 6-elements Optional AccessoriesEyepiece Power 2x Barlow Super Plössl 4-elements Ultra Wide Angle 8-elements#62 T-Adapter Maintenance CollimationPage Meade Customer Service Inspecting the OpticsGauging the Movement of the Telescope LX90 Specifications AutoStar SpecificationsAutoStar Dimensions Polar Alignment Celestial CoordinatesAutoStar Polar Alignment Setting CirclesLocating the Celestial Pole Easy Polar AlignmentLining Up with the Celestial Pole Equatorial WedgePrecise Polar Alignment Star Charts City Country Latitude Latitude Chart for Major Cities of the WorldCity State/Prov./Country Latitude City State/Country LatitudeAppendix C Training the Drive Appendix D Changing the LNT Module Battery To replace the batteryAutoStar Glossary Objects in SpaceMoon Planets Deep-Sky ObjectsPage Page Page Meade Limited Warranty