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optical tube’s eyepiece. If you have aligned your 
finder, you will you see the object in your eyepiece.

Focus:  Look through the eyepiece and practice 
focusing on the object you have chosen. The focuser 
has a tension knob (25, Fig. 2) that allows the user 
to adjust how tight the focuser feels. Experiment 
with this knob to discover which adjustments are 
comfortable with your viewing style.

Observe the Moon:  When you feel comfortable 
with the finder, the eyepieces, the locks and the 
adjustment controls, you will be ready to try out the 
telescope at night. The Moon is the best object to 
observe the first time you go out at night. Pick a 
night when the Moon is a crescent. No shadows 
are seen during a full Moon, making it appear flat 
and uninteresting.

Look for different features on the Moon: The most 
obvious features are craters. In fact you can see 
craters within craters. Some craters have bright 
lines about them. These are called rays and are 
the result of material thrown out of the crater when 
it was struck by a colliding object. The dark areas 
on the Moon are called Maria and are composed 
of lava from the period when the Moon still had 
volcanic activity. You can also see mountain ranges 
and fault lines on the Moon.

Use a neutral density filter (sometimes called a 
“moon filter”) when observing the Moon. Neutral 
density filters are available from Meade as an 
optional accessory.

Spend several nights observing the Moon. Some 
nights, the Moon is so bright that it makes other 
objects in the sky difficult to see. These are nights 
that are excellent for lunar observation.

Observe the Solar System:  After observing the 
Moon, you are ready to step up to the next level 
of observation, the planets. There are four planets 
that you can easily observe in your telescope:  
Venus, Mars, Jupiter and Saturn.

Nine planets travel in a fairly circular pattern around 
our Sun. Any system of planets orbiting one or 
more stars is called a solar system. Our Sun, by 
the way, is a single, dwarf star. It is average as far 
as stars go and is a middle aged star.

Beyond the planets are clouds of comets, icy 
planetoids and other debris left over from the birth 
of our sun (the Oort cloud). Recently astronomers 
have found large objects in this area and they may 
increase the number of planets in our solar system.

The four planets closest to the Sun are rocky and 
are called the inner planets. Mercury, Venus, Earth 
and Mars comprise the inner planets. Venus and 
Mars can be easily seen in your telescope.

Venus is seen before dawn or after sunset, because 
it is close to the Sun. You can observe Venus 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 sometimes even Mars’ 
polar caps. But quite often, Mars is further away 
and just appears as a red dot with some dark lines 
crisscrossing it.

Jupiter, Saturn, Uranus, Neptune and Pluto 
comprise the outer planets. These planets, except 
for Pluto, are made mostly of gases and are 
sometimes called gas giants. If they had grown 
much bigger, they may have become stars. Pluto is 
made mostly of ice.

Jupiter is quite interesting to observe. You can see 
bands across the face of Jupiter. The more time 
you spend observing these bands, the more details 
you will be able to see.

One of the most fascinating sights of Jupiter are 
its moons. The four largest moons are called the 
Galilean moons, after the astronomer Galileo, who 
observed them for the first time. If you’ve never 
watched the Galilean moons in your telescope 
before, you’re missing a real treat! Each night, the 

Summary of Contents for LightBridge Plus

Page 1: ...Instruction Manual LightBridge Plus Truss Tube Dobsonian Telescopes...

Page 2: ...eversible 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 look...

Page 3: ...l system 10 Simplified collimation 10 Enhanced collimation 12 Aligning the red dot finder 13 Using the Dobsonian telescope 13 Calculating magnification 14 Observing 14 Some tips 17 Care of the optics...

Page 4: ...cage 10 Altitude bearing 2 11 Primary mirror cover 12 Side base panels 2 13 Front base panel 14 Rear base panel 15 Base panel thumbscrews 12 16 Base bottom panels 2 17 Integrated carry handles 18 Eye...

Page 5: ...s without springs 38 Fan 39 Fan power connector FIGURE 2 FOCUSER ASSEMBLY 23 Coarse focus knob 24 Fine focus knob 25 Tension knob 26 Focuser draw tube 27 2 to 1 25 eyepiece adapter 28 Eyepiece lock th...

Page 6: ...using The correct orientation of the top panel is with the six threaded holes facing up See Figure 4 Step 4 To secure the azimuth bearing system in place On the adjustment knob bolt 34 place one small...

Page 7: ...ct tray orientation is with the screws placed under the tray and out of view Note It is not recommended to install the altitude brake 19 until the optical tube lower cage 9 is placed onto the base ASS...

Page 8: ...w and brake parts provided The altitude brake can be adjusted as needed to induce additional friction on the altitude motion Note When using heavy eyepieces or accessories the optical tube balance poi...

Page 9: ...position under the heavy accessory weight Experiment with these knobs to discover which adjustments are comfortable with your viewing style Step 7 Lift to remove the dust cover from the primary mirror...

Page 10: ...er collimator to help you to collimate your telescope see Optional Accessories Before your first observing session take the time now to familiarize yourself with the following collimation procedure so...

Page 11: ...lder 1 2 Correct 1 and incorrect 2 collimation as viewed by a star test Figure 24 1 2 3 4 5 1 2 1 1 2 2 3 3 4 Figure 25 Figure 26 Figure 27 Figure 28 4 3 2 5 1 6 1 Parabolic Primary Mirror 2 Secondary...

Page 12: ...can be seen centered within the secondary mirror s reflection With the secondary mirror thus aligned the image through the draw tube appears as in Fig 28 4 Primary mirror adjustments If the secondary...

Page 13: ...ield of view and keep it centered during the finders alignment procedure 2 Rotate the dial on top of the finder to change the intensity until you are comfortable with the brightness Push the lever bel...

Page 14: ...al Length ___________________ Eyepiece Focal Length Example Using the 26mm eyepiece supplied with the 10 f 5 LightBridge Plus telescope the power is Power 1270mm ______ 49x approx 26mm The type of eye...

Page 15: ...planets that you can easily observe in your telescope Venus Mars Jupiter and Saturn Nine planets travel in a fairly circular pattern around our Sun Any system of planets orbiting one or more stars is...

Page 16: ...housands of stars with your telescope At first you may think stars are just pinpoints of light and aren t very interesting But look again There is much information that is revealed in stars The first...

Page 17: ...es vertically and or horizontally as needed At higher powers astronomical objects will seem to move through the field of view of the eyepiece more rapidly Place the object to be viewed at the edge of...

Page 18: ...g lens causes virtually no degradation of image quality and should not be considered reason to clean the lens B When absolutely necessary dust on the mirror should be blown off with an ear syringe ava...

Page 19: ...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 Azimuth...

Page 20: ...e 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 Azimut...

Page 21: ...e 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 Azimut...

Page 22: ...tion that you want but also give you the eye relief you need Other qualities to look for with eyepieces are the apparent field size which is how large an object looks in an eyepiece and coatings which...

Page 23: ...ctors use a parabolic figured mirror which corrects for spherical aberration inherent in other more standard reflector types that use a spherical mirror The secondary mirror is a flat optical surface...

Page 24: ...o Meade freight prepaid with proof of purchase This warranty applies to the original purchaser only and is non transferable Meade products purchased outside North America are not included in this warr...

Page 25: ...25 DRAWING OF IMAGE photocopy this page OBSERVER OBJECT NAME DATE TIME OBSERVED CONSTELLATION EYEPIECE SIZE SEEING CONDITIONS EXCELLENT GOOD POOR NOTES OBSERVATION LOG...

Page 26: ...26 DRAWING OF IMAGE photocopy this page OBSERVER OBJECT NAME DATE TIME OBSERVED CONSTELLATION EYEPIECE SIZE SEEING CONDITIONS EXCELLENT GOOD POOR NOTES OBSERVATION LOG...

Page 27: ...27 DRAWING OF IMAGE photocopy this page OBSERVER OBJECT NAME DATE TIME OBSERVED CONSTELLATION EYEPIECE SIZE SEEING CONDITIONS EXCELLENT GOOD POOR NOTES OBSERVATION LOG...

Page 28: ...14 2725 00 Sept 2018 REV 0 We appreciate your business Keep in touch Let s get social meadeinstruments meadeinstruments meadeinstrument Share your photos with us MeadeMoments Social meade com For spec...

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