Telescope-Service Binoculars

Telescope-Service - Your Expert for Telescopes, Mounts, Binoculars, Spotting Scopes and Accessories. We offer a broad selection of eyepieces, filters, accessories for astro-imaging and many more interesting items.

Experience Nature With Both Eyes - With Telescope-Service Binoculars

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Telescope-Service binoculars combine a modern design, an outstanding mechanical and optical quality and - most importantly - extremely crisp and contrasty images.

As General Distributor we get these binoculars directly from the factory - we can therefore offer our binoculars at very low prices.

One of the most important factors of a pair of binoculars is described by the so-called twilight factor. It is supposed to inform about how bright an image is. You can easily calculate the twilight factor for any pair of binoculars yourself:

Twilight Factor = Square root of ( Lens Diameter x Magnification )
Example: 10x50 binoculars => Twilight factor = SQRT ( 50 x 10 ) = 22.4

In our opinion the twilight factor is a misleading figure, though: It doesn't really tell much about what you can expect. A very powerful 7x50 has the same twilight factor as an overly dim 12x30.

We prefer a different, much more simple figure: The diameter of the exit pupil.

The exit pupil is the cross-section of the light that leaves the binoculars at the rear. When you hold your binoculars in front of a bright background and look at the eyepieces from a distance you will see a bright circle - the exit pupil. You can see it on the image to the right.

How To Calculate The Diameter of the Exit Pupil:

Exit Pupil Diameter = Lens Diameter / Magnification
Example: 10x50 binoculars => Exit Pupil Diameter = 50 / 10 = 5mm

How to Interpret the Exit Pupil Diameter:

The human pupil opens up to a diameter of up to 7mm at night - on average. This limits the maximum useful exit pupil diameter to that same 7mm - a pair of 10x80 binoculars, for instance, would have an exit pupil diameter of 8mm. Some of its light would be wasted on the iris of your eyes.

Which Exit Pupil Diameter To Choose:

6-7mm ... very bright images. Typical binoculars of this category are 7x50 binoculars. This is very useful for nighttime observing and in the twilight.

4-5mm ... good compromise. Bright image and at the same time usable during the daytime.

up to 4mm ... primarily suited for daytime use.

Exception: ... Large binoculars beyond 80mm lens diameter tend to have an exit pupil around 4mm. Due to their large aperture and consequently large light-gathering power they are still very well suited for nighttime use.

Easy Payment: We offer our customers several easy and fast payment methods. You will receive exact payment details when ordering or on request!

Compact Binoculars
25mm to 42mm objective diameter

Medium-Sized Binoculars
50mm to 70mm objective diameter
waterproof, fogproof, marine, ...

Giant Binoculars
80mm to 100mm objective diameter

Test reviews of some of our binoculars (Italian language): www.binomania.it


10x50 LE - Universal Binoculars excellent contrast - full broadband multicoating very comfortable eye relief ..... only SEK 495,-	10x50 WP - Nitrogen Filled and Waterproof a very robust high-quality binocular for outdoor use excellent image quality - comfortable eye relief ...... SEK 995,-

7x50 Marine - Excellent Quality Binoculars An extremely powerful pair of binoculars for demanding users. Top image quality. .... SEK 2885,-	10x50 MX Marine - Excellent Quality Binoculars An extremely powerful pair of binoculars for demanding users. Very good image quality. .... SEK 3075,-

10x60 - Powerful Astronomical Binoculars This is the largest binocular that can be used free-handed. Bright images at a particularly low price .... SEK 920,-	15x70 - Best-Price Astronomical Binoculars Powerful big binoculars for demanding observations of the wildlife and the night-sky - long eye-relief - Best Price ...... SEK 1395,-

10.5x70 Marine - Excellent Quality Binoculars Very powerful binoculars for nighttime wildlife observing and demanding astronomical use .... SEK 4575,-	15x70 Marine - Excellent Quality Binoculars Very powerful binoculars for nighttime wildlife observing and demanding astronomical use .... SEK 4575,-

Canon offers a selection of excellent quality image stabilized binoculars. The image stabilizer allows you to use higher magnifications free-handed.

Canon 15x50 IS All Weather 15x magnification, 50mm aperture	Canon 18x50 IS All Weather 18x magnification, 50mm aperture


20x80 - Triplet Objective - Excellent Image Quality Triplet Objective: better field correction - reduced false colour robust design - integrated tripod adaptor .......SEK 2375,-	20x90 - Powerful Night-Sky Binoculars enormous light-gathering power for astronomical use - gas nebulae and star clusters get into your reach - integrated tripod adaptor - long eye-relief .... Sold

25x100 - Light Gathering Giant Our new and improved 25x100 is now available. Better optics, mechanics and larger prisms make for a supreme binocular particularly well suited for astronomical use ... SEK 3350,-	20x88 - 90° Angled View Binoculars - Exchangable Eyepieces excellent image quality through triplet objective lenses - reduced colour aberration - 90° angled view for superb observing comfort ... Sold

25x100 - Our Giant 45° Angled-View Binoculars - 1.25" eyepieces! oversized prisms for true wide-angle views - for maximum observing fun ... from SEK 14995,-


TS Solar Scanner - Monocular and Binocular for perfectly safe Solar Observation Monocular - multi-coating - with Soft Case ....... Sold out Binocular - similar to the monocular, but for both eyes Sold out	10x25 Pocket Binoculars - also available as Monocular very good performance - Multi-coating - with Soft Case .......... SEK 195,- the 10x25 for one eye - it doesn't get more compact than this.. SEK 155,-

8x40 Best Price Universal Binoculars A compact and very comfortable binocular - lightweight - with soft case ....... SEK 325,-	8x42 & 10x42 - Roof Prism - Top Price Fully multi-coated, nitrogen filled, waterproof compact design .... SEK 995,-

SALE - 8x42 - Roof Prism - Triplet Objectives Excellent contrast and sharpness over the entire field of view - excellent mechanical quality .......... SEK 1225,-	TS Nevada 10x42 - Roof Prism - High End Nature and Hunting Binoculars Excellent contrast and sharpness over the entire field of view these binoculars are among the best we know in this price range .......... SEK 1450,-

Canon offers a selection of excellent quality image stabilized binoculars. The image stabilizer allows you to use higher magnifications free-handed.

Canon 8x25 IS 8x magnification, 25mm aperture	Canon 10x30 IS 10x magnification, 30mm aperture

Canon 12x36 IS II 12x magnification, 36mm aperture	Canon 10x42 L IS WP 10x magnification, 42mm aperture