Meade LightBridge Plus Instruction Manual

Meade LightBridge Plus Instruction Manual

Truss tube dobsonian telescopes

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Instruction Manual
LightBridge
Plus Truss Tube
Dobsonian Telescopes

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Summary of Contents for Meade LightBridge Plus

  • Page 1 Instruction Manual LightBridge Plus Truss Tube ™ Dobsonian Telescopes...
  • Page 2 WARNING! Never use an unfiltered 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.
  • Page 3: Table Of Contents

    CONTENTS LightBridge Plus features...................4 Focuser assembly....................5 Primary mirror assembly..................5 Azimuth bearing assembly..................5 Secondary mirror assembly..................5 Assembling the base....................6 Assembling the optical tube..................7 The red-dot finder.......................9 The cooling fan......................10 Collimation of the optical system................10 Simplified collimation...................10 Enhanced collimation..................12 Aligning the red-dot finder..................13 Using the Dobsonian telescope................13...
  • Page 4: Lightbridge Plus Features

    FIGURE 1: LIGHTBRIDGE PLUS FEATURES TELESCOPE FEATURES 1. Eyepiece 2. Red-dot finder 3. Red-dot finder bracket 4. Focuser assembly 5. Upper cage 6. Upper truss tube lock knobs (3) 7. Trusses (3) 8. Lower truss tube lock knobs (3) 9. Lower cage 10.
  • Page 5: Focuser Assembly

    FIGURE 4: AZIMUTH BEARING FIGURE 2: FOCUSER ASSEMBLY ASSEMBLY 23. Coarse focus knob 29. Center bearing bushing 24. Fine focus knob 30. Large roller bearing plates (2) 25. Tension knob 31. Larger roller bearing 26. Focuser draw tube 32. Small roller bearing 27.
  • Page 6: Assembling The Base

    (13) into position. Large washer Step 7: Locate all 12 base thumbscrews (15) and all four base panels (12-14). Place one of the large side Figure 7 walls (12) onto the base with the LightBridge Plus logo facing outward.
  • Page 7: Assembling The Optical Tube

    Place the small rear base panel (14) between the top and bottom parts of the optical tube. To the side panels (12) with the Meade logo facing assemble, closely follow the steps below. outward. Now attach the side panels to each other...
  • Page 8 tighten the truss knobs after all three trusses are in place. Optical tube fully assembled Note: Do not fully tighten the truss-tube lock knobs (8) until the upper cage (5) is assembled to ensure all components fit together correctly. Install Figure 15 truss tubes Step 5:...
  • Page 9: The Red-Dot Finder

    To focus the eyepiece, turn the coarse focus knob (23) until the viewed object is in focus. The LightBridge Plus telescope come with a 10:1 fine focus knob that can be used to get your final focus (24) with more precision.
  • Page 10: The Cooling Fan

    It is also common to need to re-collimate the telescope after assembly of the telescope to achieve optimal optical performance. Meade offers an optional laser collimator to help you to collimate your telescope (see Optional Accessories). Before your first observing session,...
  • Page 11 Figure 22 Newtonian Reflecting Telescope 1. Parabolic Primary Mirror 4. Spider vanes 2. Secondary Mirror 5. Primary Mirror Adjustments & Locks 3. Secondary Mirror Holder 6. Focused Image Face-on view Edge-on view Figure 23 Figure 24 Secondary Mirror Assembly Correct (1) and incorrect (2) collimation as viewed by a star test. 1.
  • Page 12: Enhanced Collimation

    (1, Fig. 28) and the reflection of the primary the focuser draw tube. The Meade LightBridge mirror (2, Fig. 28) appear centered within the Plus is slightly different from that of other Newtonian...
  • Page 13: Aligning The Red-Dot Finder

    However, with the short focal ratio primary mirror 3. Check this alignment on a celestial object, of the LightBridge Plus, true collimation requires such as the Moon or a bright star, and make any that the secondary mirror be offset in 2 directions: necessary refinements.
  • Page 14: Calculating Magnification

    10” f/5 LightBridge Plus telescope, the power lightly nudge the telescope in the proper direction. This may take a little practice at first, but you’ll soon Power = 1270mm get the hang of it.
  • Page 15 “moon filter”) when observing the Moon. Neutral you will be able to see. density filters are available from Meade as an optional accessory. One of the most fascinating sights of Jupiter are its moons.
  • Page 16 When you become an advanced observer you can Optional color filters help bring out detail and look for other types of objects such as asteroids, contrast of the planets. Meade offers a line of planetary nebula and globular clusters. And if inexpensive color filters.
  • Page 17: Some Tips

    The more you learn about objects in the sky, the Earth and makes an object move through the more you will learn to appreciate the sights you see telescope’s field of view. To keep astronomical in your telescope. Start a notebook and write down objects centered in the field, simply move the the observations you make each night.
  • Page 18: Care Of The Optics

    Look for star charts—these are available on a monthly basis in Astronomy and Sky and Telescope magazines. CARE OF THE OPTICS Your Meade LightBridge Plus telescope is a fine instrument. With reasonable care, it will last a lifetime. Maintenance guidelines include: A.
  • Page 19: Specifications

    Limiting Visual Magnitude......................14.02 Focuser..............Dual speed 2” rack and pinion with 10:1 fine focus Red-Dot Finder..............Deluxe red-dot with variable reticle pattern Eyepiece..................2” Meade 26mm Wide Angle Eyepiece Primary Mirror................Parabolic BK7 mirror, Diffraction-limited Secondary Mirror Support....................4-vane, steel Base Assembly..............No-tool needed assembly, 4-sided structure Altitude Bearings......................110mm diameter...
  • Page 20: 12" Lightbridge Plus

    Limiting Visual Magnitude........................14.4 Focuser..............Dual speed 2” rack and pinion with 10:1 fine focus Red-Dot Finder..............Deluxe red-dot with variable reticle pattern Eyepiece..................2” Meade 26mm Wide Angle Eyepiece Primary Mirror................Parabolic BK7 mirror, Diffraction-limited Secondary Mirror Support....................4-vane, steel Base Assembly..............No-tool needed assembly, 4-sided structure Altitude Bearings......................130mm diameter...
  • Page 21: 16" Lightbridge Plus

    Limiting Visual Magnitude........................15.0 Focuser..............Dual speed 2” rack and pinion with 10:1 fine focus Red-Dot Finder..............Deluxe red-dot with variable reticle pattern Eyepiece..................2” Meade 26mm Wide Angle Eyepiece Primary Mirror................Parabolic BK7 mirror, Diffraction-limited Secondary Mirror Support....................4-vane, steel Base Assembly..............No-tool needed assembly, 4-sided structure Altitude Bearings......................170mm diameter...
  • Page 22: Optional Accessories

    9mm ,12mm, and 40mm, in addition to meade.com for complete details on these and the supplied 26mm. And remove the 1.25 eyepiece holder and your LightBridge Plus is ready to use 2” other accessories. diameter eyepieces. Meade Laser Collimator: The Meade Laser Collimator is an easy to use collimation device.
  • Page 23: The Reflector Optical System

    All LightBridge Plus Newtonian reflectors use a parabolic-figured mirror, which corrects for spherical aberration inherent in other more standard reflector types that use a spherical mirror.
  • Page 24: Meade Customer Service

    ONE YEAR from the date of original purchase in the U.S.A. and Canada. Meade will repair or replace a product, or part thereof, found by Meade to be defective, provided the defective part is returned to Meade, freight-prepaid, with proof of purchase.
  • Page 25: Observing Log

    OBSERVATION LOG OBSERVER: OBJECT NAME: DATE & TIME OBSERVED: CONSTELLATION: EYEPIECE SIZE: SEEING CONDITIONS: EXCELLENT GOOD POOR NOTES: DRAWING OF IMAGE photocopy this page...
  • Page 26 OBSERVATION LOG OBSERVER: OBJECT NAME: DATE & TIME OBSERVED: CONSTELLATION: EYEPIECE SIZE: SEEING CONDITIONS: EXCELLENT GOOD POOR NOTES: DRAWING OF IMAGE photocopy this page...
  • Page 27 OBSERVATION LOG OBSERVER: OBJECT NAME: DATE & TIME OBSERVED: CONSTELLATION: EYEPIECE SIZE: SEEING CONDITIONS: EXCELLENT GOOD POOR NOTES: DRAWING OF IMAGE photocopy this page...
  • Page 28 We appreciate your business. Keep in touch! Let’s get social: @meadeinstruments @meadeinstruments @meadeinstrument Share your photos with us: #MeadeMoments Social@meade.com For special offers and other products, visit our website www.meade.com 14-2725-00 27 Hubble, Irvine, California 92618 (800) 626-3233 www.meade.com Sept 2018 REV 0...

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