background image

Looking at or near the 

Sun

will cause 

irreversable

damage to your eye. Do not point

this telescope at or near the Sun. Do not look through the telescope as it is moving.

6

ASSEMBLE THE TUBE

STEP 6:

Move the circular panels. They should move easily

about, without any stiffness. If not, tighten or loosen them using a

screwdriver while holding the attachment nut in place (with your

fingers or a wrench) on the other end of the bolt. 

STEP 7:

Turn the base so that it is now resting on the feet. 

Place the rear OTA (8) into the base. Make sure that the altitude

bearings fit snugly into the openings on the side panels of the

base. Make sure that the seam of the tube is pointing at the

front 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 add larger eyepieces, cameras or

other accessories to the Meade LightBridge telescope without

causing the tube to slip or drift. To learn how to install the Alti-

tude Adjustment Knob, see page 21. 

STEP 8:

Loosen the three bottom truss knobs (6).

Place each truss (5) into a set of slots.

Tighten the truss knobs after all three trusses are in place.

STEP 9:

After all 3 trusses are in place, loosen the knob (4) on

top of each truss.

Place the secondary mirror tube (3) into the slots at the top of

each truss.... 

STEP 10:

...

and tighten the truss knobs.

Make sure that the seam on the tube is also pointing towards

the front panel (see step 7).

slots

slots

seam

truss

truss

knobs

front

panel

dust

cover

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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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