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Anleitung Zusammenfassung
• (949) 451-1450 FAX: (949) 451-1460 • NOTE: Instructions for the use of optional accessories are not included in this manual. For details in this regard, see the Meade General Catalog. In the Schmidt-Cassegrain design of the Meade 8", 10", and 12" 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 aspheric 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 8", 10", and 12" models include oversize 8.25", 10.375" and 12.375" primary mirrors, respectively, yielding fully illuminated fields-ofview significantly wider than is possible with standard-size primary mirrors. Note that light ray (2) in the figure would be lost entirely, except for the oversize primary. It is this phenomenon which results in Meade 8", 10", and 12" Schmidt-Cassegrains having off-axis field illuminations 10% greater, aperture-for-aperture, than other Schmidt-Cassegrains utilizing standard-size primary mirrors. The optical design of the 4" Model 2045D is almost identical but does not include an oversize primary, since the effect in this case is small. LX200 Schmidt-Cassegrain telescopes now feature new baffle tube designs. These computer-optimized designs incorporate a series of 7 to 11 (depending on the focal ratio and size of the LX200) internal field-stops to eliminate almost all internal reflections, yielding the best image contrast available in any Schmidt-Cassegrain available today. The Meade 7" Maksutov-Cassegrain Optical System (Diagram not to scale) The Meade 7" Maksutov-Cassegrain design optimizes imaging performance by utilizing a combination of two-sided spherical meniscus lens (right), a strongly aspheric f/2.5 primary mirror, and a spherical secondary mirror. The convex secondary mirror multiplies the effective focal length of the primary by a factor of six, resulting in an overall f/15 system at the Cassegrain focus. The oversize 8.25" primary mirror results in a fully-illuminated (unvignetted) field of view significantly wider than can be obtained with Maksutov optics incorporating primary mirrors of the same aperture as their meniscus correcting lenses. Computer-optimized primary and secondary mirror baffles, as well as a sequence of field stops internal to the primary mirror baffle, yield lunar, planetary, stellar, and deep- space images of uncommonly high contrast and resolution. ¬ WARNING! • (Square) Never use the LX200 telescope to look at the Sun! Looking at or near the Sun will cause instant and irreversible damage to your eye. Eye damage is often painless, so there is no warning to the observer that damage has occurred until it is too late. Do not point the telescope or its viewfinder at or near the Sun. Do not look through the telescope or its viewfinder as it is moving. Children should always have adult supervision while observing. 1. Viewfinder Dew Shield 2. Viewfinder Collimation Screws 3. Declination (Dec) Setting Circle 4. Declination Pointer 5. Focus Knob 6. Eyepiece Holder 7. Right Ascension (R.A) Lock 8. Right Ascension Slow-Motion Controls 9. Right Ascension Vernier Pointer Captions for Figure 1 10. Right Ascension Setting Circle 11. Power Panel 12. Keypad Hand Controller 13. Diagonal Mirror (Square) 14. Eyepiece 15. Bubble Level 16. Hour Angel (HA) Pointer . 17. Drive Base 18. Viewfinder Focus Lock Ring Contents 7" LX200 Maksutov-Cassegrain Telescope 8", 10", & 12" LX200 Schmidt-Cassegrain Telescope Introduction 5 Mode Functions 16 1. What is the LX200? An Overview 5 1. Mode 1: Telescope/Object Library 16 a. Heavy-Duty Mounts 5 a. Telescope Menu File 16 b. Built-in 64,359 Object Library 5 b. Object Library Menu File 20 c. Altazimuth Mode Operation 5 2. Mode 2: Coordinates/GO TO 22 d. Terrestrial Operation 5 a. Coordinates Menu File 22 e. Keypad and Power Panel Functions 5 b. GO TO Menu Option 22 2. Standard Equipment 5 3. Mode 3: Clock/Calendar 22 4. Mode 4: TIMER/FREQ 22 Unpacking and Inspection 6 a. TIMER = Menu Option 23 1. What You Should Have 6 b. FREQ = Menu Option 22 2. Please Look Everything Over 6 5. Mode 5: Keypad Off/Brightness Adjust 23 3. Inspecting the Optics 6 4. Caution: All LX200 Owners 6 Magnification and Field of View 24 5. Caution: 10" and 12" LX200 Owners 6 1. Magnification 24 6. Keypad Version Number 6 2. Apparent Field and Actual Field 24 Telescope Assembly 7 Appendix A: Equatorial Wedge 25 1. The Field Tripod 7 1. 8" Equatorial Wedge 25 2. Mounting the Viewfinder 8 a. Azimuth Control 25 a. Attaching the Viewfinder 8 b. Deluxe Latitude Adjuster 25 b. Focusing the Viewfinder 8 2. Superwedge 26 c. Collimating the Viewfinder 8 3. Mounting the Telescope 26 3. Attaching the Diagonal Mirror and Eyepiece 8 4. Magnetic Compass 27 4. Collimation 8 a. Setting Magnetic Declination...