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Meade LX85 Series Instruction Manual
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Meade LX85 Series Instruction Manual

German equatorial mounted telescopes with audiostar
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Instruction Manual
LX85 Series with AudioStar
German Equatorial Mounted Telescopes

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Summary of Contents for Meade LX85 Series

  • Page 1 Instruction Manual LX85 Series with AudioStar German Equatorial Mounted Telescopes...
  • Page 2 WARNING!

  • Page 3: Table Of Contents

    Appendix A: ......35 LX85 Mount Overview ..... .4 Appendix B: .

  • Page 4: Lx85 Mount Overview

    LX85 Mount Overview...
  • Page 5 LX85 Mount Overview...
  • Page 6 Overview Azimuth Adjustment Knobs: LX85 Equatorial Mount: Finder Scope: AudioStar Hand Box: Altitude Adjustment Knob:...
  • Page 7 On/Off Switch:...
  • Page 8 ACF Optical Tube Overview...
  • Page 9 Maksutov-Cassegrain Optical Tube Overview...

  • Page 11: Refractor Optical Tube Overview

    Refractor Optical Tube Overview...

  • Page 12: Parts List

    LX85 Parts List Parts List #217001 with 5" Refractor Parts List...
  • Page 13 Parts List #217008 with 80mm APO Refractor Parts List #217009 with 115mm APO Refractor Parts List...
  • Page 15 Reminder: The Counterweight(s) should already be installed before attaching the optical tube!
  • Page 17 The Telescope Home Position LX85 Home Position...
  • Page 18 Reminder: Never look at the Sun with your whenever operating the telescope during the day.
  • Page 19 • ................... • ................... Note: The location settings (country/state/ province and city, or zip code) are only asked for • ................... to change this setting later on, use the Site menu. • ................... • ...................
  • Page 20 the LX85 telescope model database, select "LX85 Mount" and enter in the optical tubes focal length when prompted. the telescope points to an area of sky that is obstructed, you can select a different star by pressing one of the bottom Scroll Keys. Hint: The GO TO key also allows you to perform...
  • Page 21 a “spiral search”. A spiral search is useful when the telescope slews to an object, but that object is not visible in the eyepiece after the telescope during an alignment procedure.) Press GO TO starts slewing in a spiral pattern at a very slow speed around the search area.

  • Page 22: The Audiostar Handbox

    The AudioStar Handbox The AudioStar - Back Detail 1. 2-Line LCD 8. Serial Port Display 9. Coil Cord 2. ENTER Key 10. Coil Cord Port 3. MODE Key 11. "?" Key 4. “GO TO” Key 12. Utility Light 5. Arrow Keys 13.
  • Page 23 • Top line: • Bottom line: NOTE: Note: Slew Speeds...
  • Page 24 Speeds “1”,“2”, or “3”: Speeds “4”, “5”, or “6”: Speeds “7” or “8”: Speed “9”: Note: Serial Port:...
  • Page 25 Observe the Moon...

  • Page 26: Audiostar Operation

    AudioStar Operation Important Note: No matter how many levels into AudioStar are traveled, each press of the MODE key moves up a level, until the top level, “Select Item”, is reached. Once in the Select Item level, press MODE to return to the topmost level, “Select Item: Object”.
  • Page 27 is the Event menu. objects that are visible for the user’s particular location, time and date. 8. Press MODE again to move up another level. This is the top level, “Select Item”. 9. Press MODE again to return to the starting The most popular tour is “Tonight’s Best”...

  • Page 28: The Audiostar Menu Tree

    The AudioStar Menu Tree...
  • Page 29 to select a Landmark, then press “GO TO” and the The Object Menu options include: telescope slews to the object. • Solar System is a database of the eight planets Add – To add a Landmark, choose the “Add” (Earth is not included) in ascending orbits from the option.
  • Page 30 Sunrise and Sunset calculates the time that the Sun the Glossary menu or through hypertext words rises or sets on the current date. embedded in AudioStar. A hypertext word is any word in [brackets], usually found when using the AudioStar Moon rise and Moon set calculates the time that the Help function or when reading a scrolling message Moon rises or sets on the current date.
  • Page 31 Cord Wrap, when set to “On”, moves the telescope in connected. such a way as to prevent the cords and cables attached Field of View: Scroll through a list of available eye- to your telescope assembly from getting wound around the assembly and tangled as the telescope slews to view is calculated.
  • Page 32 a value near 0, it takes longer for the tube to • Min AOS (Acquisition of Signal) allows you respond as you hold down an Arrow key and enter a value in degrees. This value represents also slews the tube more slowly. Experiment the altitude at which your telescope begins to with this option.
  • Page 33 RA worm. A full cycle takes about 10 minutes. software from the Meade website (www. When complete AudioStar will return to the PEC menu. meade.com) and wants to pass this software It is advised that you perform one training and then along to friends.
  • Page 34 is retained within the AudioStar memory until you overwrite it by performing additional training cycles. PEC Update Menu Option PEC Update does not overwrite the data, but updates the training using information gathered from both the last and the current training sessions. If you wish to repeat the procedure.
  • Page 35 Mount LX85 German Equatorial Mount & Tripod #217000 Mount Type German Equatorial Drives 2.91 inch Precision Worm Drive Power 12 Volts DC, 5 Amperes Tripod New Adjustable-Height Steel Leg Tripod Electronics AudioStar Handbox Computer Control ST-4 Compatible AutoGuider Port Guide Port RS-232 to AudioStar PC Connection Included Accessories...
  • Page 36 Model and Product Number LX85 with 70mm Astrograph #217010 Optical System Optical Design 4-Element Petzval Refractor Aperture (Diameter of Objective) 70mm Focal Length 350mm Focal Ratio Optical Coatings Fully Multi-Coated Optical Glass FPL 53 ED (Extremely Low Dispersion) Glass Resolving Power (arc seconds) 1.65 Limiting Visual Setllar Magnitude 11.2...
  • Page 37 Model and Product Number LX85 with 80mm APO Refractor #217008 Optical System Optical Design 3-Element Apochromat Refractor Aperture (Diameter of Objective) 80mm Focal Length 400mm Focal Ratio Optical Coatings Fully Multi-Coated Optical Glass FPL 53 ED (Extremely Low Dispersion) Glass Resolving Power (arc seconds) 1.45 Limiting Visual Setllar Magnitude...
  • Page 38 Model and Product Number LX85 with 115mm APO Refractor #217009 Optical System Optical Design 3-Element Apochromat Refractor Aperture (Diameter of Objective) 115mm Focal Length 805mm Focal Ratio Optical Coatings Fully Multi-Coated Optical Glass FPL 53 ED (Extremely Low Dispersion) Glass Resolving Power (arc seconds) Limiting Visual Setllar Magnitude 12.3...
  • Page 39 Model and Product Number LX85 with 5" Refractor #217001 Optical System Optical Design 2-Element Achromat Refractor Aperture (Diameter of Objective) 4.72" (120mm) Focal Length 700mm Focal Ratio f/5.8 Optical Coatings Resolving Power (arc seconds) Limiting Visual Setllar Magnitude 12.39 Finder Scope 8x50 Optical Mount Mount Type...
  • Page 40 Model and Product Number Optical System Optical Design Aperture (Diameter of Objective) 5.9" (150mm) Focal Length 750mm Focal Ratio Optical Coatings Resolving Power (arc seconds) 0.76 Limiting Visual Setllar Magnitude 12.9 Finder Scope 8x50 Optical Mount Mount Type German Equatorial Drives 2.91 inch Precision Worm Drive Power...
  • Page 41 Model and Product Number Optical System Optical Design Aperture (Diameter of Objective) 7.9" (200mm) Focal Length 750mm Focal Ratio Optical Coatings Resolving Power (arc seconds) 0.76 Limiting Visual Setllar Magnitude 12.9 Finder Scope 8x50 Optical Mount Mount Type German Equatorial Drives 2.91 inch Precision Worm Drive Power...
  • Page 42 Model and Product Number LX85 with 6" Maksutov-Cassegrain #217002 Optical System Optical Design Maksutov-Cassegrain Aperture (Diameter of Objective) 5.9" (150mm) Focal Length 1800mm Focal Ratio f/12 Optical Coatings Resolving Power (arc seconds) 0.77 Limiting Visual Setllar Magnitude 12.9 Finder Scope 8x50 Optical Mount Mount Type...
  • Page 43 Model and Product Number LX85 with 6" ACF #217005 Optical System Optical Design Advanced Coma-Free Aperture (Diameter of Objective) 6" (152mm) Focal Length 1520mm Focal Ratio f/10 Optical Coatings Resolving Power (arc seconds) 0.76 Limiting Visual Setllar Magnitude 12.9 Finder Scope 8x50 Optical Mount Mount Type...
  • Page 44 Model and Product Number LX85 with 8" ACF #217006 Optical System Optical Design Advanced Coma-Free Aperture (Diameter of Objective) 8" (203mm) Focal Length 2032mm Focal Ratio f/10 Optical Coatings Resolving Power (arc seconds) 0.57 Limiting Visual Setllar Magnitude 13.5 Finder Scope 8x50 Optical Mount Mount Type...
  • Page 45 objects may also be located using Right Ascension and Declination. For example: You could locate Los Angeles, California, by its latitude (+34°) and longitude (118°). Similarly, you could locate the Ring Nebula (M57) by its Right Ascension (18hr) and its Declination (+33°).
  • Page 46 down keys). alignment star based on your observing sites date, time and location. Center that star in the eyepiece and press enter to complete the alignment. • Declination Setting Circle: The Dec. setting circle Two-Star Polar Alignment has been factory set to read the correct Declination of celestial objects.
  • Page 47 Note: Since the second object (i.e., the object to be located) is in constant motion, once the R.A. circle is calibrated (step 2, above) the telescope should be moved rapidly to read the coordinates of the second object. Otherwise the second object will no longer be in the position indicated by the R.A.
  • Page 48 General Maintenance...
  • Page 49 Verify that AUTOSTAR Press > until it INITIALIZATION is is centered complete. Scope slews left. Bring target back Press MODE until to center using Select Item is displayed. the Right Arrow key. Select Item Object Press < until it Press the scroll is centered up key once.
  • Page 50 Ray (2) Ray (1) Secondary Mirror Focal Plane Secondary Primary Baffle Tube Baffle Field Stops Correcting Plate Primary Mirror The Maksutov-Cassegrain In the optical design of the Maksutov-Cassegrain, light enters from the right through a multi-coated meniscus lens, proceeds to an f/2.2 primary mirror, and then to a convex secondary mirror that multiplies effective focal length by...
  • Page 51 Refracting Telescopes use a large objective lens as their primary light-collecting element. Meade refractors include an achromatic (2-element) objective lenses in order to reduce, or virtually eliminate, the false color (chromatic aberration) that results in the telescopic image when light passes through a lens.
  • Page 52 The optics of your LX85 telescope have been collimated (aligned) at the factory. Ordinarily the telescope collimation should remain intact unless it is handled roughly in transport. Occasionally the alignment should be inspected and adjusted, when necessary, to retain the maximum optical performance of the telescope.
  • Page 53 system, such collimation is absolutely essential for good performance. Take special care to read and understand this section well so that your ACF will give you the best optical performance. 1. At night, point the telescope to a fairly bright star that is at least 60º...
  • Page 54 (1, Fig. 5); primary mirror-tilt screws (5, Fig. 4). The telescope’s image is brought to a focus at (6, Fig. 4). screw the wrong way. Turn the opposite direction look down the focuser draw- tube (1, Fig. 7) with the e.
  • Page 55 image through the drawtube appears as in Fig. 10. 3. Primary mirror adjustments: If the secondary mirror Fig. 10) appear centered within the drawtube (3, Fig. of the secondary mirror (4, Fig. 10) appear off-center, then the primary mirror tilt requires adjusting, using the Phillips head screws of the primary mirror cell (3, Fig.
  • Page 57 APPENDIX G: Northern hemisphere observers (N): If the site is over 70 miles (110 km) North of the listed city, add one Table of Latitudes degree for every 70 miles. If the site is over 70 miles Latitude Chart for Major Cities of the World South of the listed city, subtract one degree per 70 miles.
  • Page 59 RGA Number Required: must...
  • Page 60 @meadeinstruments @meadeinstruments @meadeinstrument 27 Hubble, Irvine, California 92618 (800) 626-3233 www.meade.com...