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u
c
sing The
alculaTOr
M
d
as a
easuring
evice
For example: You observe a lighthouse, and its measured Vertical View
Angle is 6 decade mils. You need to rotate the Active Ring and place
the division marked "6" in the View Scale at the Angle Index Mark. Its
assuming height is 12 m, the division marked "12" in the Size Scale
points to the division marked "200" in the Fixed Scale. This tells us that
the lighthouse's distance is 200 m from us.
The Size Scale and Fixed scale of the Calculator Dial are in a "ratio" to
each other. When your observing object is too large or too small, you
can zoom it tenfold or discretionarily, and zoom the measuring result in
the same way. Thus, you can get more convenience, especially when
you aren't familiar with diversified units.
h
M
OW TO
easure an
(
)
heighT and WidTh
According to the formula for distance measurement, you can calculate
the height using:
H = L × ω. (Height = Distance x View Angle)
When measuring the size, you first estimate the distance to the object
and then measure the View Angle. With these measurements, you can
calculate the height of the target using the formula.
For example:
The distance is 0.6km between the observer and the object. You can
measure that the Horizontal View Angle is 6 decade mils (60mils) and
the Vertical View Angle is 3 decade mils (30mils). So, using the formula
you can get:
The height: H = 0.6 × 30 = 18 m (for feet divide 18 by 3.28)
The width: H = 0.6 × 60 = 36 m
u
c
sing The
OMpass
The Compass is aligned with the vertical range finding scale.
The Compass by itself will only indicate direction to or from an object
but not relative position. To determine position, you need a map or
chart and a protractor.
The azimuth angle can be measured through the analog Compass
which is built into the binocular. It shows the azimuth of the object
relative to the observer. Each graduation of the Compass equals one
degree of angle. When the object lies north from you, the Compass
reads 360°. The Compass degrees will increase when you turn it
clockwise. 90° means the object lies in the east from you, 180° means
the south and 270° means the west.
In order to insure precise angle measurements, the binocular should
be kept horizontal and level when reading the compass, and the object
should lie in the middle of the reticle.
Note: When using the Compass, always keep in mind the local
variation between magnetic north (the Compass reading) and true
north. Do not put your finger or hand over the white button (compass
window), as it allows light to enter the binocular, so the Compass
readings can be seen.
north
360º
West
270º
180º
south
d
ial
O
s
BjecTs
ize
east
90º
a
y
B
TTaching
Our
These binoculars feature a built-in tripod adapter fitting which is a
threaded screw hole underneath a cap. To attach a binocular tripod
adapter, remove the cap and then thread the screw from the binocular
tripod adapter into the threaded screw hole. The other end of the
binocular tripod adapter attaches to a photographic tripod. Mounting
binoculars this way allows for added stability and comfort.
Care and CLeaning: Binoculars do not need routine maintenance
other than making sure that the objective lenses and eyepieces are
kept clean. If repairs become necessary, they should be serviced by
the manufacturer or a qualified binocular repair company. If your
binocular is roughly handled or dropped, there is a good chance that
the collimation (alignment of the optics) will be out and they should
be serviced. Dirty objective lenses and/or eyepieces mean less light
transmission and loss of brightness, as well as unsharp images. Keep
your optics clean! When not using your binocular, store it in the soft
case provided after putting the lens caps on. Avoid touching the
glass surfaces, however, if fingerprints (which contain mild acid) do
get on the glass, they should be cleaned as soon as possible to avoid
damaging the coatings. To clean the optical surfaces, we recommend
a lens/optics cleaning kit available at most photo or optical shops.
Follow the instructions provided with the kit closely. If you have a
lot of dust or dirt accumulated, brush it off gently with a camel's hair
brush and/or utilize a can of pressurized air before using the cleaning
kit. Alternately, you could use the Celestron LensPen (# 93575) made
especially for cleaning binoculars. never attempt to clean your
binocular internally or try to take it apart!
Caution! Viewing the Sun may cause permanent eye damage. Do
not view the Sun with your binocular!
ProbLems or rePair: If warranty problems arise or repairs are
necessary, contact the Celestron customer service department if you
live in the U.S.A. or Canada. If you live elsewhere, please contact the
Celestron dealer you purchased the binocular from or the Celestron
distributor in your country (listings are located at www.celestron.com).
Warranty: Your binocular has the Celestron No Fault Limited
Lifetime Warranty for U.S.A. and Canadian customers. For complete
details of eligibility and for warranty information on customers in other
countries, visit the Celestron website.
Celestron binoculars are designed and intended for those 13 years
of age and older.
f
Or cOMpleTe specificaTiOns and prOducT infOrMaTiOn
:
visiT
WWW
2835 Columbia Street • Torrance, CA 90503 U.S.A. • Tel: 310.328.9560
©2011 Celestron • All rights reserved. • Printed in China • 01-11
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inOculars TO a
ripOd
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.
.
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