Celestron Cavalry 71420 User manual

BINOCULARS | JUMELLE
BINOCULARES | FERNGLAS
BINOCOLI

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Thank you for purchasing a Celestron Cavalry binocular/monocular. We trust this binocular/
monocular will provide you with years of enjoyment and faithful service. Please read the
instructions carefully before using your binocular/monocular to ensure proper use and care.
CELESTRON®CAVALRY BINOCULARS AND MONOCULAR
Power Button
(7x50)
Battery
Compartment
(7x50)
Calculator
Dial (7x50)
LCD Screen
(7x50)
Mode Button
(7x50)
Tripod Adapter
Threads
Focus
Wheel
Eyecup
Rainguard
Diopter
Adjustment
Ring
Eyepiece
Focus Ring
Eyepiece Cap
Compass
Window
(8x42)
Compass
Window
(7x30)
Objective
Lens Cap
Objective
Lens

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The interpupillary distance, or the distance
between the pupils, varies from person to
person. The binocular must be correctly aligned
(adjusted) to the distance between your pupils
to achieve a single, clear image. To adjust this
distance, lift the binocular up to your eyes (using
both hands) and look through them at an object
in the distance. Move the two barrels (halves)
of the binocular closer together or further
apart until you see a single, clear image (Fig. 2).
Check that the interpupillary distance is set
correctly every time you use your binocular.
ADJUSTING THE INTERPUPILLARY DISTANCE (IPD)
Fig. 2
WARNING: Viewing the Sun may cause permanent eye damage. Do not view the Sun with your binoculars/monocular or even with the naked eye.

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Models 71420, 71424, and 71426
To ensure a crisp, sharp image the focusing
system of the binocular must be set to
compensate for any differences in your
eyesight. This is achieved by setting the
diopter (located on the right eyepiece) before
use. To set the binocular to your eyesight
follow the instructions below.
1. View an object in the distance through
the binocular.
2. Cover the right objective lens with your hand
or the objective lens cap.
3. Rotate the focus wheel until the image
viewed with your left eye is clear and sharp.
4. Cover the left objective lens with your hand
or objective lens cap.
5. Viewing the same object, adjust the diopter
ring until the image viewed with your right
eye is clear and sharp.
6. Your binocular is now adjusted to your eyes
and focusing on any object can now be
achieved by simply turning the focus wheel.
Diopter Adjustment
Ring
Focus Wheel
Fig. 3
SETTING THE DIOPTER / FOCUSING

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Model 71422
The Cavalry 7x50 utilizes an individual focus
system which requires you to focus each
eyepiece to ensure a crisp, sharp image. This
is achieved by setting the diopter (located on
each eyepiece) before use. Once the binocular
is adjusted to your eyesight at a distance of
approximately 100 yards, the binocular will be in
focus without additional adjustment to an infinite
distance (for distances closer than 100 yards
readjustment may be necessary). To set the
binocular to your eyesight follow the instructions
below.
1. View an object at a distance of 100 yards
or more through the binocular.
2. Cover the right objective lens with your hand
or the objective lens cap.
3. Rotate the left eyepiece until the image
viewed with your left eye is clear and sharp.
4. Cover the left objective lens with your hand
or objective lens cap.
5. Viewing the same object, rotate the right
eyepiece until the image viewed with your
right eye is clear and sharp.
6. Your binocular is now adjusted to your eyes
and refocusing is not necessary for objects
at 100 yards or more. Adjustment may be
needed for distances closer than 100 yards.
Diopter Adjustment
Ring
Fig. 4

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EYECUP ADJUSTMENT
The Cavalry models 71420 and 71424 feature
twist-up eyecups and models 71422, 71426
and 71215 feature foldable rubber eyecups to
accommodate both eyeglass and non-eyeglass
wearers. If you do not wear eyeglasses, leave
the rubber eyecups in the up position or twist
the eyecups counterclockwise until they reach
the up position. If you wear eyeglasses, make
sure that the eyecups are in the down position
to obtain the maximum field of view. The twist-
up eyecups can be set at positions between
fully up and down which may suit some users
better. When done observing, make sure the
rubber eyecups are in the up position for storage.
Model 71215
The focus of the Cavalry 8x42 monocular
is adjusted by simply turning the focus ring
located in front of the eyepiece.
Tip: Eyeglasses worn for nearsightedness should be worn when using a
binocular/monocular as you may not be able to obtain focus at infinity
without them.
Focus Ring
Fig. 5
Fig. 6bFig. 6a

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TRIPOD ADAPTABILITY
The Cavalry binoculars feature built-in threads
that allow the binocular to be attached to a
tripod using a binocular tripod adapter. These
threads can be accessed by unscrewing the
logo plate found on the front of the hinge (Fig. 7).
To attach the binocular to a tripod, thread the
adapter into the binocular and attach the other
end of the adapter to a photographic tripod.
Mounting the binocular on a tripod allows for
added stability and comfort during prolonged
viewing.
WATERPROOF / FOGPROOF
The Cavalry Series is waterproof and filled with dry nitrogen gas to prevent the housing from
fogging internally.
Fig. 7

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USING THE RETICLE
CALCULATING DISTANCE
Cavalry models 71420, 71422 and 71215
have an integrated reticle that can be used to
estimate size and distance. The reticle is divided
into 10mil increments with 5mil marks between
each 10mil increment. Each 10mil increment
is indicated using single digit numbers (1, 2,
3, etc.). For finer ranging ability the last 5mils
of the reticle are divided into 1mil and 0.5mil
increments.
Note: The reticle varies slightly from model to model but this does not
affect how distance and size are calculated.
Using the simple formulas below, you can
effectively determine the distance to the
target if its size is known.
Target Size (Yards) x 1000
Measured Mils
= Range (Yards)
Fig. 8
Fig. 9

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The Calculator Dial located on the left objective
barrel can be used to determine distance quickly
and easily without using the formulas above. The
calculator is composed of a triangular indicator
marked “Angle”, a rotating ring and three number
scales. The first two scales are on the rotating
ring; the first scale is the “Angle” measured in
MILS and the second scale is the “Object Size”.
The third scale below the rotating ring is the
“Distance” reading. To use the calculator, look
through the binoculars and measure the height
of an object using the reticle. Using the same
example above, a man is seen that measures
20mils tall. Using the rotating ring, align the
triangular indicator to the number 2 (20mils) on
the Angle scale. Estimating that the man is 6
feet tall (2 yards), locate the number 2 on the
“Object Size” scale. Each number on the “Object
Size” scale will correspond to a number on the
fixed distance scale. In this example the 2 on the
distance scale is lined up with 100, so the man
measured in the binocular is 100 yards away.
For example:
You range a 6-foot tall man (2 yards) that is
20mils tall and you want to know the distance
to him.
USING THE CALCULATOR DIAL (MODEL 71422 ONLY)
Target Size (Inches) x 27.8
Measured Mils
= Range (Yards)
2 (Yards) x 1000
20Mils
= 100 Yards
Target Size (Meters) x 1000
Measured Mils
= Range (Meters)

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CALCULATING SIZE (HEIGHT AND WIDTH)
Using the simple formulas below, you can
effectively determine the size of a target if
the distance to the target is known.
For example:
You are 300 meters away from a tank that
measures 15 miles tall and 20mils wide and
you want to know the size of the tank.
Range (Yards) x Measured Mils
1000
= Target size (Yards)
Range (Meters) x Measured Mils
1000
= Target size (Meters)
300 (Meters) x 15 Mils
1000
= 4.5 Meters tall
300 (Meters) x 20 Mils
1000
= 6 Meters wide
Range (Yards) x Measured Mils
27.8
= Target size (Inches)
Fig. 10