Bushnell Telescope 78 6114 User Manual

INSTRUCTION  
MANUAL  
Model # 78-6114  
LIT. #: 98-0810/08-06  
 
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PARTS DIAGRAM  
G
E
H
C
B
F
L
A
M
L
D
I
P
O
NOTE: Actual product may have improvements that are not shown in this diagram  
A. Yoke Mount  
G. Finderscope  
B. Focus Knob  
C. Focus Tube  
D. Objective Mirror (not  
shown)  
H. Telescope Main Body  
I. Tripod Leg  
L. Yoke Locking Knob  
M. Azimuth Lock  
O. Tripod Leg  
E. Eyepiece  
F. Dust Cap (remove  
before viewing)  
Adjusting Clamp  
P. Accessory Tray  
 
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ASSEMBLY DIAGRAMS  
1.  
2.  
3.  
4.  
5.  
CAUTION! Viewing the sun can cause permanent eye damage.  
Do not view the sun with this telescope or even with the naked eye.  
 
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TELESCOPE ASSEMBLY INSTRUCTIONS  
1. Your telescope has adjustable (telescoping) legs (Fig. 1).  
2. Stand tripod and spread legs. Loosen the three leg clamps. Grab tripod head and lift.  
Extend the tripod legs to the desired height (at equal lengths) and tighten the clamps  
on each leg to hold it in position (Fig. 1). Note: please tighten tripod head bolts after  
removing from box, as some vibration during shipment may have loosened them.  
3. Attach the accessory tray (P) to the center leg braces on the tripod legs (Fig 2) and  
insert accessory tray and bolt through center of tray into braces and tighten bolt.  
4. Remove telescope main body from the box. Attach telescope main body (H) by aligning  
the hole in the telescope saddle with that in the yoke. Screw yoke locking knobs (L)  
through both holes and tighten the knob.  
5. Remove the finderscope (G) from the box. Remove the two knurled thumbscrews from  
the telescope main body. Position the finderscope bracket on the telescope main body so  
that the holes in the base of the bracket line up with the exposed bolts in the telescope  
main body. Replace the two-knurled thumbscrews and tighten securely (Fig. 3).  
6. Insert eyepiece (E) into focus tube (C). Secure by tightening small retaining screw.  
NOTE: In all astronomical telescopes, the image appears upside down. To use the  
telescope for terrestrial view and to correct the mirrored image, insert the erecting  
eyepiece in between the focus tube (C) and the eyepiece (E). We recommend the use  
of the low magnification eyepiece when the telescope is used for terrestrial viewing.  
Reflectors (mirrors) are used mainly for astronomical purposes.  
The telescope is now fully assembled and ready for use.  
7. To use the Barlow, insert Barlow (Fig. 5) into the focus tube. Secure by tightening small  
retaining screw. Insert eyepiece into open end of Barlow and secure.  
8. To use the erecting lens, insert erecting lens (Fig. 5) into the focus tube. Secure by  
tightening small retaining screw. Insert eyepiece into the open end of the erecting lens  
and secure. This will allow you to view objects naturally on land—not upside down or  
backwards.  
TO USE THE FINDERSCOPE  
The finderscope is a small wide field of view telescope mounted alongside the main  
telescope and is used to search for the target and aim the main telescope at it. But before  
you can use the finderscope, you will need to line it up with the telescope. This procedure  
will become easier with practice.  
1. Install the lowest power eyepiece (25mm) into the eyepiece tube. Pick out an easily  
recognized, unmoving object no closer than a thousand yards away. Aim your telescope  
toward your object until its image is centered in the eyepiece. Lock all the knobs on the  
mount so the telescope will not move.  
2. Look through the finderscope. If the object you lined up in the telescope is not visible,  
adjust the two adjustment screws and move the finderscope around until you see it.  
3. Recheck your telescope to make certain it is still on target. If it moved, realign it and  
adjust your finderscope. If it hasn’t, you’re all set. Your finderscope is now operational.  
 
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FINDING OBJECTS  
1. Loosen the altitude locks on the sides of the telescope tube and the silver azimuth lock on the  
base of the altazimuth mount, then move the telescope in the desired direction.  
2. Look through the finderscope and pan the telescope until the object appears in the field of view.  
Once it's in the field of view, tighten the altitude and azimuth locks.  
FOCUSING  
1. Once you have found an object in the telescope, turn the focus knob until the image is sharp.  
2. To focus on an object that is nearer than your current target, turn the focusing knob toward the  
eyepiece (i.e., so that the focus tube moves away from the front of the telescope). For more  
distant objects, turn the focus knob in the opposite direction.  
3. To achieve a truly sharp focus, never look through glass windows or across objects that produce  
heat waves, such as asphalt parking lots.  
MAGNIFICATION  
1. The magnification (or power) of a telescope varies depending upon the focal length of the  
eyepiece being used and the focal length of the telescope.  
2. To calculate magnification, use the following formula, in which FL = focal length:  
Magnification = FL (telescope) in mm  
FL (eyepiece)  
TECHNICAL SPECIFICATIONS  
Objective Diameter:  
Focal Length:  
Eyepieces:  
114mm (4.5”)  
500mm  
H20mm (Low Power)  
H12.5mm (High Power)  
Erecting Eyepiece:  
Barlow:  
Maximum Magnification:  
Accessories:  
1.5X  
3X  
120X  
Finderscope, moon  
map, astronomy CD  
EYE LENS CHART & THEORETICAL POWER LIMITS  
40X  
25X  
H12.5mm Eye Lens Power:  
H20mm Eye Lens Power:  
NOTE: Magnification is calculated magnification.  
Low power is recommended for most viewing conditions.  
 
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ENJOYING YOUR NEW TELESCOPE  
1. First determine your targeted object. Any bright object in the night sky is a good starting point  
One of the favorite starting points in astronomy is the moon. This is an object sure to please any  
buddingastronomerorexperiencedveteran. Whenyouhavedevelopedproficiencyatthislevel,  
other objects become good targets. Saturn, Mars, Jupiter, and Venus are good second steps  
to take.  
2. Thefirstthingyouneedtodoafterassemblingthetelescopeasplannediscenterthedesiredobject  
in the finderscope. Provided you did a reasonable job aligning the finderscope, a quick  
lookthroughthemain telescopetubeatlowpowershouldrevealthesameimage.Withthelowest  
power eyepiece (the one with the largest number printed on it) you should be able to focus the  
same image that you saw through the finderscope. Avoid the temptation to move directly to the  
highestpower.Thelowpowereyepiecewillgiveyouawiderfieldofview,andbrighterimage—thus  
making it very easy to find your target object. At this point with a focused image in both scopes,  
you’ve passed the first obstacle. If you don’t see an image after attempting to focus it in, you  
mightconsideraligningyourfinderscopeagain. Onceyoupassthisstep, you’llwillenjoythetime  
spentensuringagoodalignment.Everyobjectyoucenterinthefinderscopewillbeeasilyfoundin  
the main telescope tube, which is important for continuing your exploration of the night sky.  
3. Thelowpowereyepiecesareperfectforviewingthefullmoon,planets,starclusters,nebulae,and  
even constellations. These should build your foundation. However, for more detail, try bumping  
up in magnification to higher power eyepieces on some of these objects. During calm and crisp  
nights, the light/dark separation line on the moon (called the “Terminator”) is marvelous at high  
power.Youcanseemountains, ridgesandcratersjumpoutatyouduetothehighlights. Similarly,  
youcanmoveuptohighermagnificationsontheplanetsandnebulae.Starclustersandindividual  
stars are best viewed through the low power no matter what.  
The recurring astronomical theater we call the night sky is an ever-changing billboard. In other  
words, the same movie does not play all the time. Rather, the positions of the stars change not  
only hourly as they seem to rise and set, but also throughout the year. As the earth orbits the  
sun, our perspective on the stars changes on a yearly cycle about that orbit. The reason the  
sky seems to move daily just as the sun and the moon "move across our sky is that the earth  
is rotating about its axis. As a result you may notice that after a few minutes or a few seconds  
depending on what power your are viewing at, the objects in your telescope will move. At  
higher magnifications especially, you will notice that the moon or Jupiter will :race: right out of  
the field of view. To compensate, just move your telescope to "track" it in the necessary path.  
4.  
 
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HELPFUL HINTS  
1. Your telescope is a very sensitive instrument. For best results and  
fewer vibrations set your telescope up on a level location on the  
ground rather than your concrete driveway or your wooden deck. This  
will provide a more stable foundation for viewing, especially if you’ve  
drawn a crowd with your new telescope.  
2. If possible, view from a location that has relatively few lights. This will  
allow you to see much fainter objects. You’d be surprised how much  
more you’ll see from your local lake or park when compared to a  
backyard in the city.  
3. Using your telescope out a window is NEVER recommended.  
4. View objects that are high in the sky if possible. Waiting until the  
object rises well above the horizon will provide a brighter and crisper  
image. Objects on the horizon are viewed through several layers of  
earth’s atmosphere. Ever wonder why the moon appears orange as it  
sets on the horizon? It’s because you are looking through a consider-  
able more amount of atmosphere than you would directly overhead.  
(Note: If objects high in the sky are distorted or wavy, you are probably  
viewing on a very humid night.) During nights of unstable atmosphere,  
viewing through a telescope can be frustrating if not impossible.  
Astronomers refer to crisp, clear nights as nights of “good seeing.”  
Customer Service (800) 423-3537  
©2006 Bushnell Outdoor Products  
 
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TELESCOPE LIFETIME LIMITED WARRANTY  
Your Bushnell® telescope is warranted to be free of defects in materials and workmanship for the lifetime of  
the original owner. The Lifetime Limited Warranty is an expression of our confidence in the materials and  
mechanical workmanship of our products and is your assurance of a lifetime of dependable service.  
If your telescope contains electrical components, these components are warranted to be free of defects in  
materials and workmanship for two years after the date of purchase.  
In the event of a defect under this warranty, we will, at our option, repair or replace the product, provided  
that you return the product postage prepaid. This warranty does not cover damages caused by misuse,  
improper handling, installation, or maintenance provided by someone other than a Bushnell Authorized  
Service Department.  
Any return made under this warranty must be accompanied by the items listed below:  
1) A check/money order in the amount of $15.00 to cover  
the cost of postage and handling  
2) Name and address for product return  
3) An explanation of the defect  
4) Proof of Date Purchased  
5) Product should be well packed in a sturdy outside shipping carton, to prevent  
damage in transit, with return postage prepaid to the address listed below:  
IN U.S.A. Send To:  
Bushnell Outdoor Products  
Attn.: Repairs  
IN CANADA Send To:  
Bushnell Outdoor Products  
Attn.: Repairs  
8500 Marshall Drive  
Lenexa, Kansas 66214  
25A East Pearce Street, Unit 1  
Richmond Hill, Ontario L4B 2M9  
For products purchased outside the United States or Canada please contact your local dealer for applicable  
warranty information. In Europe you may also contact Bushnell at:  
BUSHNELL Outdoor Products Gmbh  
European Service Centre  
MORSESTRASSE 4  
D- 50769 KÖLN  
GERMANY  
Tél: +49 (0) 221 709 939 3  
Fax: +49 (0) 221 709 939 8  
This warranty gives you specific legal rights.  
You may have other rights which vary from country to country.  
©2006 Bushnell Outdoor Products  
 
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