440 x 60 Refractor Telescope
Model 78-9440
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4. Attach Acces s ory Tray
Locate the Acces s ory Tray (8). Using the accessory tray bolts, wingnuts and washers connect the
Acces s ory Tray to the Acces s ory Tray Braces (7). Start with one tripod leg and attach wingnuts.
Wingnuts should be positioned beneath the accessory tray. Do not tighten wingnuts until all
Acces s ory Tray Braces are attached, as some adjustments may be required.
5. Attach Eyepiece Acces s ories
Attach accessories as suggested in Intended Use Diagram. For example insert penta mirror
assembly into focusing tube, then insert desired eyepiece into penta mirror assembly.
6. Remove Lens Cover from 60mm Objective Lens (1).
Your Bushnell Voyager Telescope is now ready to be used. To obtain the fullest
enjoyment from your telescope, please refer to the additional information below.
HOW TO USE YOUR NEW TELESCOPE
Us ing the Penta Mirror As s embly:
1. A Bas ic Des cription: Bushnell is proud to present
the Exclusive Penta Mirror Technology. This
Penta Mirror Assembly provides the benefit of a
convenient 90-degree viewing angle commonly
associated with diagonal mirrors. However, the
Penta Mirror provides something that diagonal
mirrors cannot provide--right to left correct views of
the any object viewed through the telescope.
Unlike traditional diagonal mirrors that provide
backward images of objects seen on land and in
the night sky, the Penta Mirror allows correct
images to be viewed. The groundbreaking benefit
of this technology is that when viewing and
locating objects through the telescope, when you
want to move to the left, you move it to the left
intuitively instead of fumbling around the sky
becoming increasingly frustrated that you can’t
move the telescope the way your intuition tells you
that you need to move it. Objects on land at great
distances can be seen naturally (and readable) as
if you were many times closer to the object.
Objects in the sky appear as they appear in most
star charts. For the first time ever, you will be able
to see what you would expect resulting in excellent
viewing satisfaction. In addition, the penta mirror
has a special insert that is easily removed by
backing out the eyepiece set screw and removing
the insert to yield an 1.25” optical format receiver.
Fully Correct Image
Reversed Image
Upside-Down Image
Upside-Down & Reversed Ima
Insert
2. How-To-Us e: Just like any traditional diagonal
mirror, place the eyepieces directly into the rear of
the Penta Mirror Assembly then place the Penta
Mirror directly into the back of the telescope
focusing tube, erecting lens or Barlow lens (See
Intended Configuration Diagram).
Penta Mirror
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Please find below an image depicting how to attach the red dot finderscope and an
image depicting a fully-attached unit.
How-To-Attach: Place Finderscope Cylindrical Groove over Cylindrical Finderscope
Mount Post until it clicks into place.
Plastic Insert
Adjustment
Wheels
Aligning and Using Red Dot Finderscope
Remove plastic insert on bottom side of finderscope to allow battery to make connection with
battery contact for power. Turn power switch on.
Look through main telescope tube at low power and establish a well-defined stationary
target. Looking through red dot finderscope, alternate tightening each adjustment wheel
(at rear and left side of finderscope) until the red dot of finderscope is precisely aligned
and centered on the same object being viewed in main telescope tube.
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Selecting an Eyepiece:
1. You should always start viewing with the lowest power eyepiece, which in this case is the 12.5mm
lens. Note: the base power of each eyepiece is determined by the focal length of the telescope
objective lens, which for this model is 700 mm. A formula can be used to determine the power of
each eyepiece: teles cope OBJ ECTIVE lens focal length
EYEPIECE focal length
=
MAGNIFICATION (e.g. Using the 12.5 mm lens, the calculation would look like this: 700 mm ¸
12.5mm = 56x or 56 power.)
2. Included with this telescope is a Barlow lens. Barlow lenses are used to double or triple the power of
your telescope. Place your Barlow between the focusing tube and the penta mirror. Note: The
Penta Mirror As s embly when us ed in conjunction with the Barlow Lens and Eyepiece as
s hown in the Intended Configuration Diagram will yield an effective doubling power of the
magnification already achieved with the Barlow and Eyepiece configuration alone.
The
magnification calculation would look like this: 700 mm ¸ 12.5mm = 56 power. 56 power x 2.5=140
power. 56 x 2.5 x 2=280 power. (See Intended Configuration Diagram).
Focus ing Teles cope:
1. After selecting the desired eyepiece, aim main telescope tube at a land-based target at least 200
yards away (e.g. telephone pole or building). Fully extend focusing tube by turning Rack and Pinion
Focus ing Mechanis m (11).
2. While looking through selected eyepiece (in this case the 12.5 mm), slowly retract focusing tube by
turning Rack and Pinion Focusing Mechanism until object comes into focus.
Viewing Land-Bas ed Objects :
1. As described above, the Erecting Lens will correct the normally upside down and reversed image so
that you can easily enjoy observing land-based objects through your telescope.
2. Simply insert the Erecting Lens into the focusing tube of the telescope, penta mirror into erecting lens,
then insert an eyepiece into the erecting lens.
(See Intended Configuration Diagram).
3. Repeat focusing directions as described above except that you will be looking through the Erecting
Lens and eyepiece instead of just the eyepiece.
Aligning Finders cope:
Look through main telescope tube at low power and establish a well-defined stationary target. Looking
through red dot finderscope, alternate tightening each adjustment wheel (at rear and left side of
finderscope) until the red dot of finderscope is precisely aligned and centered on the same object being
viewed in main telescope tube. See finderscope page.
Now, objects located first with the wide field Finders cope (14) will be centered in the field of view of the
main telescope.
Never Look Directly At The Sun With Your Teles cope
Permanent Damage To Your Eyes May Occur
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Enjoying Your New Teles cope
1. First determine your targeted object. Any bright object in the night sky is a good starting point. The
moon is a starting point that is sure to please the budding astronomer as well as the experienced
veteran. When you have developed proficiency at this level, other objects become good targets.
Saturn, Mars, Jupiter, and Venus are good second steps to take.
2. The first thing you need to do after assembling the telescope as planned is center the desired object
in the finderscope's cross hairs. Provided you did a reasonable job aligning the finderscope, a quick
look through the main telescope tube at low power should reveal the same image. With the lowest
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 highest
power. The low power eyepiece will give you a wider field of view, and brighter image--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 might consider aligning
your finderscope again. Once you pass this step, you'll enjoy the time spent ensuring a good
alignment. Every object you center in the finderscope will be easily found in the main telescope tube,
which is important for continuing your exploration of the night sky.
3. The low power eyepieces are perfect for viewing the full moon, planets, star clusters, 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. You can
see mountains, ridges and craters jump out at you due to the highlights. Similarly, you can move up
to higher magnifications on the planets and nebulae. Star clusters and stars are best viewed through
the low power no matter what.
4. The recurring astronomical theater we call the night sky is an ever-changing billboard. In other words,
not the same movie plays 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 you 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 the fine
adjustment controls on your telescope to "track" it in the necessary path.
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 considerable 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."
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Where do I s tart?
Your Bushnell telescope can bring the wonders of the universe to your eye. While this manual is
intended to assist you in the set-up and basic use of this instrument, it does not cover everything you
might like to know about astronomy. The first thing you need to do is get a very simple star chart and a
flashlight with a red bulb or red cellophane over the end. For objects other than stars and constellations,
a basic guide to astronomy is a must. Some recommended sources appear on our website at
www.bus hnell.com. Also on our website will be current events in the sky for suggested viewing. But,
some of the standbys that you can see are:
The Moon--a wonderful view of our lunar neighbor can be enjoyed with any magnification. Try viewing at
different phases of the moon. Lunar highlands, lunar Maria (lowlands called "seas" for their dark
coloration), craters, ridges and mountains will astound you.
Saturn--even at the lowest power you should be able to see Saturn's rings and moons. This is one of the
most satisfying objects in the sky to see simply because it looks like it does in pictures. Imagine seeing
what you've seen in textbooks or NASA images from your backyard!
Jupiter--the largest planet in our solar system is spectacular. Most noted features are its dark stripes or
bands both above and below its equator. These are the north and south equatorial belts. Also interesting
are Jupiter's four major moons. Pay close attention to their positions from night to night. They appear to
be lined up on either side of Jupiter.
Mars--The Great Red Planet appears as a reddish-orange disk. Look at different times of the year and try
to catch a glimpse of the white polar ice caps.
Venus--just like the moon, Venus changed phases from month to month. Some views of brilliant Venus
appear as if you were looking at a distant crescent moon.
Nebulae--The Great Orion Nebula is a very well known night sky object. This and many others are
brought to you by this telescope.
Star Clusters--View millions of stars densely packed in a cluster that resembles a ball.
Galaxies--One of the greatest and most interesting galaxies is our neighbor the Andromeda Galaxy.
Enjoy this and many others.
Much, much, more!
For further questions or additional information please contact:
Bushnell Sports Optics Worldwide
9200 Cody
Overland Park, KS 66214
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ANSWERS TO COMMONLY ASKED QUESTIONS
1. The image I see in the telescope is upside
·
·
·
An upside-down image is
a
common
down?
characteristic of most astronomical telescopes.
However, as described above, the Erecting
Eyepiece will provide erect images allowing
objects that you see to be right-side-up.
2. How do I determine the power my telescope?
The power of your telescope can be determined
by dividing the focal length of the objective lens
by the focal length of the eyepiece. The
eyepiece focal length is the number printed on
the eyepiece. (For example: 1000 ¸ 25 = 40X)
3. Where do I find the Telescope Focal Length?
The telescope focal length is the same focal
length as the objective focal length. For this
telescope it is 700mm. Telescope focal lengths
range from 600mm to 910mm on Bushnell
telescopes.
4. What can I see with my telescope?
·
·
Telescopes with power ranging from 25X to 50X
can be used to view Star Clusters and Nebulae.
90X to 120X telescopes can view galaxies. Most
planets can be seen at 150X and higher.
5. What do the numbers on the eyepiece mean?
The numbers on the eyepiece represents the
“focal Length” of the eyepiece.
TROUBLESHOOTING GUIDE
If after you have set-up your new telescope you are unable to see any objects, use this Quick
Reference guide to help you to understand the cause of the problem and quickly determine a remedy
1. I’ve completed the set-up yet I cannot see
anything.
·
·
·
Check to see if objective lens cover has been
removed.
Try to view an object that is 200 or more yards
away.
If there is more than one eyepiece included with
the telescope, use the lowest power (highest
number) eyepiece to begin viewing.
·
Use the Rack & Pinion Focus ing Mechanis m (3)
to bring the object you are trying to view into
focus
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Intended Configuration Diagram
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