Celestron Cometron User Manual

4 I ENGLISH
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, rotate the right
eyepiece (the diopter) 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.
TIP:
Eyeglasses worn for nearsightedness should be worn when using
binoculars as you may not be able to obtain focus at infinity
without them.
Diopter Adjustment
Focus Wheel
Fig. 3
SETTING THE DIOPTER / FOCUSING

Celestron Cometron Specifications

General

Brightness	50.41 cd/m²
Exit pupil	7.1 mm
Eye relief	- mm
Prism type	BK-7
Waterproof	Yes
Lens coating	Multi Coated (MC)
Magnification	7 x
Product color	Black
Twilight factor	18.7
Objective diameter	50 mm
Apparent field of view	6.8 °
Closest focusing distance	8 m
Diopter compensation (±)	3
Field of view (at 1000 m)	119 m
Interpupillary distance (max)	72 mm
Interpupillary distance (min)	56 mm

Weight and Dimensions

Depth	198 mm
Width	168 mm
Height	64 mm
Weight	774 g