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.


Telescope Optics
Parabolical Primary Mirrors and Elliptical Secondary Mirrors

primary and secondary mirrors for telescopes

Optical Quality If you put much effort into building your own telescope nothing is as important as the certainty that the optics of your telescope are very good. Only then will you have a satisfying overall result.

All of our mirrors have a very high optical standard. The most important factor in choosing the mirrors was that their quality is very constant, you do not need to fear to get a "lemon". All mirrors are at least diffraction limited, typically much better than that.

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

TS Primary Mirrors
Very good mirrors with an excellent value for money. Available from 150mm to 300mm mirror diameter.		 Orion UK Primary Mirrors
High-quality primary mirrors made of Suprax. HILUX 96 per cent reflective coating.

Available from 150mm to 350mm mirror diameter.
TS Secondary Mirrors
Very good mirrors with an excellent value for money. Available from 21mm to 102mm mirror diameter.		 Orion UK Secondary Mirrors
High-quality primary mirrors made of Suprax. HILUX 96 per cent reflective coating.

Available from 34mm to 81mm mirror diameter.


Telescope-Service (TS) Primary and Secondary Mirrors

GSO primary mirror 150mm

Our TS primary mirrors offer an excellent value for money.

 TS Parabolical Primary Mirrors

Our TS primary mirrors were chosen because of their excellent value for money. The optical quality is constantly at a very high level. You need not fear to get a "lemon"!

We offer the same optical quality in mirrors using four different mirror substrates: Float, BK-7, Suprax (similar to Pyrex) and Low Expansion (similar to Zerodur).

All mirrors have an aluminium reflective coating, reflectivity is approximately 90 per cent. The aluminium coating is protected by a properly applied protective coating.

Delivery Time: we usually have all mirrors in stock. Please request the actual delivery time to be sure.

Our TS mirrors have a surface quality of 1/16 wave RMS at the least, typically better.

Article. No. Aperture / Focal length / f-ratio Thickness / Weight Mirror Substrate Price - Euro incl. VAT
HS 150/750 G 150mm / 750mm / f : 5 18.5 mm Float 140.-
HS 150/1200 G 150mm / 1200mm / f : 8 18.5 mm Float 140.-
HS 200/800 G 200mm / 800mm / f : 4 30 mm / 1.4kg BK-7 196.-
HS 200/1000 G 200mm / 1000mm / f : 5 30 mm / 1.4kg BK-7 188.-
HS 200/1200 G 200mm / 1200mm / f : 6 30 mm / 1.4kg BK-7 177.-
HS 200/1200 LX 200mm / 1200mm / f : 6 30 mm / 1.4kg Low Expansion 420.-
HS 250/1250 G 250mm / 1250mm / f : 5 36.8 mm BK-7 279.-
HS 300/1500 BK7 300mm / 1500mm /  f : 5   BK-7 597.-

GSO Secondary Mirror

 TS Elliptical Secondary Mirrors

Our elliptical flats have the same high optical quality of our primary mirrors. Consequently they are a good choice for anyone who wants an excellent value for money in addition to a good quality.

There are two different variants with 90 per cent reflective coating. The mirror substrate itself shouldn't be the sole argument to choose a more expensive mirror, the influence of the substrate on the optical quality is practically zero in small secondary mirrors.

Article No. Diameter (mm / inch) Reflectivity Mirror Substrate Price - Euro incl. VAT
FS 21 21mm / 0.8" ca. 90% Float Glas 22.-
FS 28 28mm / 1.1" ca. 90% Float Glas 33.-
FS 31 31mm / 1.22" ca. 90% Float Glas 36.-
FS 40 40mm / 1.6" ca. 90% Float Glas 42.-
FS 50 50mm / 2" ca. 90% Float Glas 45.-
FS 63 63mm / 2.5" ca. 90% Float Glas 78.-
FS 70 70mm / 2.7" ca. 90% Float Glas 115.-
FS 88 88mm / 3.6" ca. 90% Float Glas 198.-

Please send requests or online orders to: sales@telescope-service.com


Set for Amateur Telescope Makers
16" Primary Mirror With 2" Crayford Focuser and Primary Mirror

Parabolic Primary mirror We have made an irresistable offer for amateur telescope makers who plan to build their own Newtonian telescope. All parts are of course new.

The set consists of:

Primary Mirror 16" f/4.5

-- image quality: Diffraction limited or better
-- Diameter / Aperture 406mm
-- Edge Thickness 42mm
-- Mirror Substrate B 270
-- Focal Ratio f/4.5

Secondary Mirror

-- Diameter 88mm

Focuser

-- 2" Crayford focuser with 2" brass compression ring. Including 1.25" adaptor with compression ring.

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Absolute Top Price for the Set ........................................................................................ 1098.- Euros

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Of course we also offer primary and secondary mirror cells. Please check our German website or request details!

Please send requests or online orders to: sales@telescope-service.com



Orion (UK) Primary Mirrors

Orion 350mm parabolic mirror for telescopes

The optical quality of the Orion (UK) mirrors - Made in Europe - is extremely good.

These are the same mirrors that we offer in our TS-Lightweight Newtonians.		 Orion (UK) Parabolical Primary Mirror for Newtonian Telescopes

These mirrors are made by Orion Optics in England. They are truly Made in Europe.

The mirror substrate is Schott Suprax. With their HILUX 96 per cent reflective coating there will be more light entering your eyes, giving overall brighter images.

Suprax is very similar to Pyrex in thermic properties. The cool-down time is only marginally longer than that of Pyrex.

At the same time Suprax is a much longer material. As a consequence mirrors can be made thinner than regular mirrors, drastically reducing cool-down time in the process. Obviously, these mirrors also weigh less than thicker Pyrex mirrors.

You will not need a complicated mirror cell - the mirrors are ideally suited if you want to build a lightweight Newtonian telescope.

Delivery Time: we have most mirrors in stock. Please request the delivery time to be sure.

The optical quality of all our Orion UK mirrors is 1/16 wave RMS or better.

Article No. Aperture / Focal Length / f-ratio Weight / Thickness Price - Euro incl. VAT
HS 6" f/5 O 153mm / 750mm / f-5 - 388.-
HS 6" f/8 O 153mm / 1200mm / f-8 - 388.-
HS 6" f/11 O 153mm / 1600mm / f-11 - 418.-
HS 8" f/4.4 O 203mm / 880mm / f-4.4 1.5kgs 615.-
HS 8" f/6 O 203mm / 1200mm / f-6 1.5kgs 585.-
HS 8" f/8 O 203mm / 1600mm / f-8 1.5kgs 645.-
HS 10" f/4.8 O 254mm / 1200mm / f-4.8 3kgs 810.-
HS 10" f/5.0 O 250mm / 1250mm / f-5.0 3kgs 810.-
HS 10" f/6.3 O 254mm / 1600mm / f-6.3 3kgs 810.-
HS 12" f/4 O 300mm / 1200mm / f-4 4.4 kgs  /  29mm 1080.-
HS 12" f/5.3 O 300mm / 1600m / f-5.3 4.4 kgs  /  29mm 1035.-
HS 13,8" f/4.6 O 350mm / 1600mm / f-4.6 6.7kgs / 35mm 1882.-
Orion secondary mirrors Orion Elliptical Secondary Mirrors

The secondary mirrors have the same high-grade surface quality of the parabolical primaries. Their reflectivity is also 96 per cent (HILUX)

The mirror substrate is plate glass - in such small mirrors the mirror substrate has practically no influence on the performance of the mirror.
Article No. Diameter Price - Euro incl. VAT
FS 35 O 36 mm 51.-
FS 44 O 43 mm 61.-
FS 50 O 50 mm 79.-
FS 63 O 62mm 120.-
FS 75 O 74mm 155.-
FS 82 O 81mm 217.-
FS 90 O 90mm 224.-
FS 100 O 100mm 268.-
FS 110 O 110mm 311.-
FS 120 O 120mm 348.-
FS 130 O 130mm 435.-
FS 140 O 140mm 609.-
FS 150 O 150mm 638.-
FS 160 O 160mm 812.-

Please send requests or online orders to: sales@telescope-service.com



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