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sing the
eticle to
The distance measurement of a target can be calculated by
using the mil reticle.
The formula of distance measurement: L(km)= H (m)/ω
L — the distance between the observer and the
object (km)
H — the height of the object (m)
ω — the View Angle of the object measured with the
reticule of the monocular (mil).
When measuring the distance estimate the width or height
of the object, then measure the View Angle of the object.
Accordingly, you can calculate the distance between the
observer and the object using the formula.
For example:
There is an adult whose height is 1.70m. (H = 1.70m)
The Vertical View Angle of the adult is 4 decade mils (40mils)
L = H/ω = 1.7/40 = 0.0425km = 42.5m
Therefore: the distance between the observer and the adult is 42.5m.
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.
The azimuth angle can be measured through the analog Compass built into
the monocular. 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
in the north from you, the compass shows 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 monocular 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, as it allows light to enter
the monocular so the compass readings can be seen.
c
c
are and
leanIng
Monoculars do not need routine maintenance other than
making sure that the objective lens and eyepiece are
kept clean. If repairs become necessary, they should be
serviced by the manufacturer or a qualified monocular
repair company. If your monocular 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. A dirty objective lens and/or eyepiece means
less light transmission and loss of brightness as well
as unsharp images. Keep your optics clean! When not
using your monocular, store it in the soft case provided.
Avoid touching the glass surfaces of the monocular,
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 for best results.
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 monoculars. Never attempt to
clean your monocular internally or try to take it apart!
M
D
eAsure
istAnce
ω
Caution! Viewing the Sun may cause permanent eye
damage. Do not view the Sun with your monocular!
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 monocular from or the Celestron
distributor in your country (listings are available at www.
celestron.com).
Warranty: Your monocular 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 monoculars 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 • Fax: 310.212.5835
©2011 Celestron
All rights reserved. • Printed in China • 01-11
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