Omegon Brightsky 22x70-45 User manual

The complete or partial reproduction of the contents of this document outside of private use is expressly prohibited in every way.
Errors and omissions excepted. All texts, photos and drawings are the property of nimax GmbH.
Operating instructions
Omegon® Brightsky Large Binoculars
22x70 - 45° & 90°
26x82 - 45° & 90°
30x100 - 45° & 90°
Version 9.2019, art. no. 61488, 61489, 61490, 61491, 61492, 61493
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1120 - EN - Omegon Brightsky

The Omegon® Brightsky large binoculars
Thank you very much for purchasing these high-quality “Brightsky large binoculars from Omegon”.Please read through
these instructions carefully so that you can make full use of the binoculars. The safety-related instructions related to these
large binoculars are also described here and must be followed. The three sizes of these binoculars, with lens diameters of
70, 82 and 100mm, are each available in two variants:
45° angled viewing
90° angled viewing.
Operating elements:
1- Eyepieces
2- Clamping ring for eyepieces
3- Individual eyepiece focusing
4- Adjustment of interpupillar distance
5- Tripod adapter
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The complete or partial reproduction of the contents of this document outside of private use is expressly prohibited in every way.
Errors and omissions excepted. All texts, photos and drawings are the property of nimax GmbH.

Lens shade
When nature-watching by day and star-gazing by night, sunlight
from the side (stray light at night) is reduced when the lens shade
is extended, thus significantly increasing the contrast.
Carry handle
There is a groove in the middle of the handle which runs along the
entire length of the handle. This groove helps with alignment and
direction finding. In addition, it is possible to mount an optional
finderscope, an illuminated dot finder or an optical finder with
crosshairs, with the aid of two M5 screws.
Tripod connection
There is a ⅜” thread in the centre of the tripod connection flange
which is reduced to a ¼” thread, in other words photo standard,
with a small threaded adapter. This threaded adapter can simply
be screwed out if necessary. Many quick-release plates have a
spring-loaded pin. This engages in one of the two other holes and
prevents the binoculars twisting on the tilt head.
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The complete or partial reproduction of the contents of this document outside of private use is expressly prohibited in every way.
Errors and omissions excepted. All texts, photos and drawings are the property of nimax GmbH.

Ultra flat field eyepieces
The scope of delivery includes two 18mm, 65°, ultra flat field
eyepieces (1) with 1.25" plug-type adapter, in other words the
standard diameter for astronomical eyepieces that can also be
used here. The field of view of the eyepieces of 65° makes
extremely comfortable viewing possible.
These eyepieces have the following degrees of magnification
70mm Brightsky –22x magnification
82mm Brightsky –26x magnification
100mm Brightsky –30x magnification
The eyepieces are focussed separately as is usual
with large binoculars and double refractors. First,
remove the two light-covered protective caps
which protect the eyepiece shaft from dust.
Remove the eyepieces from the packaging and
insert these as far as they will go into the
respective eyepiece shaft. The first ring (2), which
faces the eyepieces, is used for securing and
clamping the individual eyepiece. The two
eyepieces are then focussed using the rings no.
(3).
A pin sharp image must be able to be seen with both eyes. Dioptre adjustment is not necessary here since this takes place
anyway through individual focusing.
Now "interpupillar distance" must be set. This means that the distance between the two eyepieces must be adjusted until
you perceive one large image with both eyes. To do this, grasp the eccentric knobs (4) on the left and right with both hands
and use your thumbs to swivel the eyepieces apart or push them together until a round image appears for both eyes.
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The complete or partial reproduction of the contents of this document outside of private use is expressly prohibited in every way.
Errors and omissions excepted. All texts, photos and drawings are the property of nimax GmbH.

Astronomical use
We recommend the use of a sturdy tripod with video tilt head or fork mount. This guarantees a wobble-free, steady image
and simple alignment to the required area of the sky.
The eyepieces included in the scope of supply are equipped with the 1.25" filter threads as usually used in amateur
astronomy. You can enhance your viewing experience by using astronomical light pollution or nebula filters.
You can also use all the 1.25" eyepieces customary in amateur astronomy rather than the eyepieces included in the scope
of supply if you wish. This makes a large number of different magnifications and fields of view possible for different
observation targets. We recommend eyepieces with focal lengths of between 3mm minimum and 40mm maximum.
Maintenance and care
Generally speaking, these binoculars are maintenance-free. A "very sparingly" used drop of oil or silicone grease will
certainly not harm the threaded holes. Lubricants must never be used on the lens shades.
If the lenses or eyepieces should become soiled at any time, please use a soft optics brush such as the one included in the
optional Omegon cleaning set #5551, and brush the loose dust particles from the optical surface by squeezing the blower
to create an air flow. Then use isopropanol (alcohol from the chemist) and a soft, lint-free paper cloth to carefully clean the
optical elements. If you are not sure, our support team will be happy to help.
If the binoculars should become wet through water splashes, they must be dried with care immediately.
The Brightsky large binoculars must not be subjected to any hard impact in order to avoid damage.
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The complete or partial reproduction of the contents of this document outside of private use is expressly prohibited in every way.
Errors and omissions excepted. All texts, photos and drawings are the property of nimax GmbH.

Data sheet
Model
22x70 –45° (#61488)
22x70 –90° (#61489)
26x82 –45° (#61490)
26x82 –90° (#61491)
30x100 –45° (#61492)
30x100 –90° (#61493)
Front lens diameter
70mm
82mm
100mm
Focal length
400mm
470mm
550mm
Aperture ratio
f/5.7
f/5.7
f/5.5
Adjustable interpupillar
distance
54 –78mm
54 –78mm
56 –83mm
Length
39cm
45cm
51cm
Width
21.5cm
22cm
26.5cm
Height
18.5cm
19cm
20cm
Weight
3.9kg
4.6kg
6.8kg
Type of build
Porro prisms
Lens coating
Fully, multiple
Focussing system
Single focussing, helical
Tripod connection thread
1/4”& 3/8”
Eyepiece seat
1.25”, spring-mounted rings
Colour
Grey
Housing material
Magnesium
Splash-proof
Yes
Resistant to pressurised
water
Yes
Inert gas charge
Yes, nitrogen
Handle
Yes
Lens cover
Yes, can be screwed in place
Dew cap, stray light
protection
Yes, extendable
When the eyepieces included are used
Magnification
22x
26x
30x
Exit pupil
3.2mm
3.2mm
3.3mm
True field of view
3.3°
2.5°
2.1°
Field of view at 1,000 m
57m
40m
35m
Close focus limit
13m
18m
32m
Light intensity
10
10
11
Twilight factor
39
46
55
Eyepieces included:
Number
2
Focal length
18mm
Own field of view
65°
Eye distance
25mm
Connection
1.25”sleeve
Filter thread
Yes –1.25”
Lens coating
Fully, multiple
Eyepieces for spectacle
wearers
Yes
Eyepiece cups
Folding
Eyepiece cover
Yes, can be clipped in place
Designation
Ultra flat field FMC
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The complete or partial reproduction of the contents of this document outside of private use is expressly prohibited in every way.
Errors and omissions excepted. All texts, photos and drawings are the property of nimax GmbH.