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Telescope Features   ...................................................... 8

Assembly ........................................................................ 5

Assemble the Base .................................................. 5

Assemble the Tube .................................................. 6

Insert Eyepiece, Attach Red Dot Finder .................. 7

Collimating the Optical System ................................ 8

Align the deluxe Red Dot Finder ..............................11 

Using a Dobsonian Telescope ..................................11

Calculate Magnification ............................................12  

Observing ......................................................................12

Some Tips ................................................................15

Care of the Optics ....................................................15

Meade Customer Service ..............................................16

Specifications ................................................................17

Optional Accessories......................................................19

Appendix A: Altitude Adjustment Knobs ........................21

CONTENTS

WARNING!

Never  leave  the  primary  mirror  uncov-
ered  during  the  daytime  unless  using
the telescope to view terrestrial objects.

® The name "Meade" and the Meade logo are trademarks

registered with the U.S. Patent and Trademark Office and in

principal countries throughout the world. "LightBridge " is a

trademark of Meade Instruments Corporation.

© 2006 Meade Instruments Corporation.

BATTERY SAFETY INSTRUCTIONS:
•  Always  purchase  the  correct  size  and  grade  of 

battery:  4  x  “AA-type”  Alkaline  batteries  (ANSI 
15A, 15AC/IEC LR6).

•  Always  replace  the  whole  set  of  batteries  at  one 

time, taking care not to mix old and new ones, or 
batteries of different types. 

•  Clean  the  battery  contacts  and  also  those  of  the 

device prior to battery installation. 

•  Ensure  the  batteries  are  installed  correctly  with 

regard to polarity (+ and -). 

•  Remove batteries from equipment which is not to 

be used for an extended period of time. 

•  Remove used batteries promptly.
•  Never attempt to recharge primary batteries as this 

may cause leakage, fire, or explosion.

•  Never  short-circuit  batteries  as  this  may  lead  to 

high temperatures, leakage, or explosion. 

•  Never heat batteries in order to revive them. 
•  Remember to switch off devices after use.
•  Keep batteries out of the reach of children; small 

batteries may be ingested.

•  Seek medical advice immediately if a battery has 

been swallowed.

Caution:  If  batteries  or  parts  are 

swallowed, see a doctor immediately.

Summary of Contents for LightBridge

Page 1: ...Instruction Manual 8 10 12 16 LightBridge Truss Tube Dobsonian Telescopes MEADE COM...

Page 2: ...rreversible 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 at or near the Sun Do not lo...

Page 3: ...RUCTIONS Always purchase the correct size and grade of battery 4 x AA type Alkaline batteries ANSI 15A 15AC IEC LR6 Always replace the whole set of batteries at one time taking care not to mix old and...

Page 4: ...ottom truss lock knobs 3 7 Altitude bearing 8 Rear OTA Base Assembly 9 Side base panels 2 10 Front base panel 11 Circular base plates 2 12 Feet 3 Inset A 13 a Focus knob b Fine focus knob 16 models on...

Page 5: ...se STEP 5 Next attach the three feet to the bottom panel Line up each foot and thread a small attachment screw into the foot to hold it in place Tighten to a firm feel STEP 4 Place the center bearing...

Page 6: ...t panel Lift to remove the dust cover from the mirror Note You can thread the Altitude Adjustment Knob into the protrusion just below the Altitude Bearing 7 Use the Altitude Adjustment Knob when you a...

Page 7: ...s to make it easier to line up more precisely with a target First assemble the red dot finder Slide the bracket over the groove of the red dot finder scope Tighten the two hex screws with the supplied...

Page 8: ...D shows a correctly collimated LightBridge Dobsonian telescope as it appears when viewed through the focuser with the eyepiece removed To check and if necessary set the optical collimation follow thes...

Page 9: ...flecting Telescope 1 Spider Vanes 2 Secondary Mirror 3 Parabolic Primary Mirror 4 Primary Mirror Hex Screws 5 Focuser Drawtube 6 Focused Image 1 2 3 4 5 6 Looking at or near the Sun will cause irrever...

Page 10: ...veal oblong or elongated circles 2 Fig F Adjust the 3 collimating screws on the primary mirror housing until the circles are con centric on either side of the focus In summary the adjustment screws on...

Page 11: ...too easily Just keep these bearing surfaces clean that s all the maintenance required 2 The altitude bearing surfaces 7 Fig 1 of the telescope are lightly lubricated at the factory for optimum perfor...

Page 12: ...gher power eyepiece If the image starts to become fuzzy when you use higher magnification back down to a lower power The atmosphere is not sufficiently steady to support high powers Keep in mind that...

Page 13: ...enus going through crescent phases But you cannot see any surface detail on Venus because it has a very thick atmosphere of gas When Mars is close to the Earth you can see some details on Mars and som...

Page 14: ...e like a large football and are called elliptical galaxies There are many galaxies that are irregularly shaped and are thought to have been pulled apart because they passed too close to or even throug...

Page 15: ...r blurred or distorted due to temperature differences between inside and outside air Also it is a good idea to allow your telescope to reach the ambient surrounding outside temperature before starting...

Page 16: ...nded period perhaps for one month or more it is advisable to remove the batteries from the battery pack Batteries left in the telescope for prolonged periods may leak causing damage g Do not leave you...

Page 17: ...luminum altitude bearings Secondary Mirror Support 4 vane steel Mirror 10 Focal length 1270mm 50 Focal ratio f 5 Resolving Power 0 56 arc seconds Limiting visual magnitude 14 Focuser h t u m i z a r o...

Page 18: ...ware and captive bolts Machined aluminum altitude bearings Secondary Mirror Support 4 vane steel 2 1 r o r r i M Focal length 1524mm 60 Focal ratio f 5 Resolving Power 0 45 arc seconds Limiting visual...

Page 19: ...olts Machined aluminum altitude bearings Secondary Mirror Support 4 vane steel m m 6 0 4 6 1 r o r r i M Focal length 1829mm 72 Focal ratio f 4 5 Resolving Power 0 45 arc seconds Limiting visual magni...

Page 20: ...hoto Visual Color Filters Color filters significantly enhance visu al and photographic image contrast of the Moon and planets Each filter threads into the barrel of any Meade 1 25 eyepiece and into th...

Page 21: ...otrusion at the bottom of the tension plate The protrusion fits into the indent at the bottom of the brake Thread the tension adjustment bolt into the tension plate on the side panel of the base assem...

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Page 24: ...or part a Return Goods Authorization RGA number must be obtained from Meade by writing or calling 800 626 3233 Each returned part or product must include a written statement detailing the nature of t...

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