User manual MEADE LX200GPS SCHMIDT-CASSEGRAIN WITH AUTOSTAR II HAND CONTROLLER

[. . . ] Instruction Manual 8", 10", 12", 14", 16" LX200GPS Schmidt-Cassegrain Telescopes 7" LX200GPS Maksutov-Cassegrain Telescope with Autostar II Hand Controller Meade Instruments Corporation The Meade Schmidt-Cassegrain Optical System (2) (1) Ray (2) Ray (1) 8. 218" 8. 016" (2) (1) 8. 0" Focal Plane Secondary Mirror Primary Baffle Tube Field Stops Primary Mirror Correcting Plate Secondary Baffle 8. 0" (1) (2) 1/2° (8" model depicted in diagram. Not to scale. ) In the Schmidt-Cassegrain design of the Meade 8", 10", 12", 14", and 16" LX200GPS models, light enters from the right, passes through a thin lens with 2-sided aspheric correction ("correcting plate"), proceeds to a spherical primary mirror, and then to a convex secondary mirror. The convex secondary mirror multiplies the effective focal length of the primary mirror and results in a focus at the focal plane, with light passing through a central perforation in the primary mirror. The Meade 8", 10" and 12" Schmidt-Cassegrain models include an oversize primary mirror, yielding a fully illuminated fieldof-view significantly wider than is possible with a standard-size primary mirror. [. . . ] Using only the Arrow keys (do not manually move the telescope), move the telescope to the desired landmark and center the object in the eyepiece. If you wish to add more landmarks, repeat steps 5 through 8. 9. To Select a landmark from the database: 1. Make sure the telescope is located and aligned exactly as when the desired landmark was entered into memory. Use the Scroll keys to scroll through the list of objects you have previously entered. Use the Scroll keys to scroll through location information about the object, if desired. Press MODE to exit. To perform a Landmark Survey: This procedure allows you to perform a tour of the objects entered in the "Object: Landmark" menu option--note that the Landmark Survey will function only if you have previously entered objects in the Landmark menu. Navigate to "Utilities: Landmark Survey" menu and press ENTER. The telescope moves to the first object on the Survey list and displays the name of the object. Press ENTER to restart the survey at the first object of the survey. To check on the available amount of memory in Autostar II: Autostar II has a limited amount of memory. Once you begin to store Landmarks, user objects and other bits of information in Autostar II, you will begin to use up memory. This procedure allows you to check on how much memory is still available. Navigate to the "Setup: Statistics" menu option and press ENTER. This is the amount of memory that is still available to the user. Identify This procedure allows you to use Autostar II to identify objects you have found in the night sky using the Arrow keys. If the object is not in Autostar II's database, Autostar II displays information about an object in its database that is closest to the one you queried about. Important Note: For this function to operate properly, you must first initialize and align Autostar II. If you physically move the telescope after initialization, this function will fail to operate properly. 35 In this procedure, you will center an object you wish to have identified by Autostar II in the telescope eyepiece and use the "Identify" menu to find out information about the object or the nearest object to it in the Autostar II database. Center the object you wish to have identified in the telescope's eyepiece. When Autostar II finishes calculating, the name of the closest object displays. Autostar II displays some or all of the following information about the object with each press of a Scroll key: Example: Messier 107, NGC6171, Orion Nebula, etc Globular Cluster, Nebula, Black Hole, etc. 3 2' "This Globular Cluster is 10, 000 light years away. . . . " Displayed information: Catalog or common name of object Type of object Right Ascension Declination Constellation Magnitude Size Scrolling message Browse This menu allows you to search the libraries for objects with certain parameters, much like a search engine. "Edit Parameters" lets you set various parameters for the search, and "Start Search" activates the search. Press one of the Scroll Keys and "Browse: Edit Parameters" displays. [. . . ] Instead, he believed that Saturn had "ears. " Saturn's rings are composed of billions of ice particles ranging in size from a speck of dust to the size of a house. The major division in Saturn's rings, called the Cassini Division, is occasionally visible through the LX200GPS. Titan, the largest of Saturn's moons can also be seen as a bright, star-like object near the planet. Deep-Sky Objects Star charts can be used to locate constellations, individual stars and deep-sky objects. [. . . ]