Manufacturer: -TS Teleskope
Product number: UNC20012

EUR 1.445,00


incl. 19 % VAT (DE)  
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excl. 11.95 € shipping costs (DE)  
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The UNC Newtonian series from Teleskop-Service offers an alternative to the Far East Newtons
With these telescopes you do not have to make any compromises. UNC stands for Universal Newtonian telescope with Carbon tube. Each UNC Newtonian is individually manufactured for you and optimized according to your wishes - a telescope Made in Germany!.

The 8" f/6 UNC Newtonian is a specialist for moon and planets but also good for deep-sky observing. At moon and planets mostly only the atmosphere limits the resolution of the telescope, the regular small secondary mirror provides a high contrast due to the low obstruction of only 25%.

Deep sky images with high detail resolution and high contrast, otherwise only known from apos, are within your reach. The secondary mirror offers a 100% illumination of 19 mm. With flats, sensors up to APS-C format can be used.

We suggest the well known Skywatcher EQ5 or the very stable Celestron Advanced VX as mount for this telescope.


The advantages of the TS UNC Newtonian telescopes:
High-quality, German-made carbon tube with highest stability - individual manufacture.
Optimized focus position as desired and thus also best possible illumination
Primary mirror cell and secondary mirror cell improved by Teleskop-Service
Easy collimation of primary and secondary mirror - by hand, without tools
The edge of the secondary mirror is blackened
TS UNCN2-G2 2" rack and pinion focuser with M54x0.75 intermediate thread
The secondary is attached to the secondary mount with correct offset by Teleskop-Service
94 % reflectivity on primary mirror and secondary mirror for a brighter image
Diffraction limited primary mirror - each telescope is tested on our optical bench before shipment



Every UNC Newtonian is darkened inside

The tube inner side of our UNC Newtonian telescopes is darkened. This prevents reflections and provides better contrast. The TS "Black" anti-reflective paint or a velour film is used. The result is a matte black tube interior. Velour film and the TS "Black" have a similar effect and darken better than the commonly used chalkboard paint.

The illustration shows how dark the anti-reflective paint is. The diagram (at the images at the top of this page) shows the direct comparison chalkboard paint and antireflective paint.

The carbon tube - finest precision work
The carbon tube is extra solid and completely reinforced, not only around the focuser. This makes the tubes much stiffer and the adjustment stability is high. The openings for the secondary are precisely fitted with turned mating parts, so we ensure that the secondary spider vanes are correct and the telescope produces perfect spikes right from the start.

Focus position optimized for astrophotography:
The focus point is 135 mm above the tube. This allows you to use different focusers and still have a comfortable working distance. With the standard focuser UNCN2-G2 you even get 80 mm working distance, this even allows the use of focal reducers or a binoviewer with moderate glass path compensation. For standard correctors like the Baader MPCC or the TS-Optics MAXFIELD corrector we recommend the 20 mm spacer, which comes between the focuser. This gives you 60 mm backfocus.

For visual observation you need a 2" extension tube - item # TSV235.

The 2" TS UNCN2-G2 RAP focuser:
A core component of the TS UNC-Newtons is the modern TS UNCN2-G2 focuser. The focuser builds up only 58 mm from the tube edge and still carries heavy cameras and accessories without tilting. The focuser is superior to conventional Crayford focusers.
High stiffness with extremely short length
Exact 1:10 dual-speed reduction - for perfectly focused astrophotographs
Adjustment is decoupled from the ball bearing - a clear advantage over Crayford focusers
Upgradable with motor focus - with the TS motor focus advantage: manual adjustment possible with mounted focuser
Ball bearings are adjustable, so the focuser can be adjusted perfectly - but we deliver the focuser already optimally adjusted.
Screw connection of the accessories possible - the 2" receptacle can be unscrewed, then an M54x0.75 female thread is available.


More information about the focuser UNCN2-G2

Parabolic primary mirror:
Newtonian primary mirrors made of fused silica are free of strain and provide an image that is usually even much better than diffraction limited. The surface is coated with an enhanced 94% reflection layer and a protective quartz layer. The primary mirror has a central marking as an adjustment aid.

Primary mirror fan for faster cool-down time:
A cooling fan to accelerate cool-down time to ambient temperature. Until a mirror is properly cooled down, it will create currents of warm air that will deteriorate the image - no matter which mirror substrate is used. Only after the mirror has cooled down this effect stops.

Every TS Carbon Newtonian is tested on our optical bench before shipping:
You are not buying a "pig in a poke" when you buy a UNC Newtonian from TS, but a solid telescope for life. After assembly, we subject each UNC Newtonian to an optical test in our workshop before shipping. This ensures that the telescope will fit your accessories perfectly and will deliver the optical performance we promise.

Before shipping, the primary mirror with the cell is removed from the tube and packed separately. This way we guarantee a safe shipment and avoid unnecessary transport damages.

Additional focus positions and change of secondary mirror diameter:
The focus position No. 1 with 60 mm above the 2" receptacle has proven to be very versatile. Nevertheless, we can also offer you individual focus positions and other secondary mirror sizes at no extra charge:
Focus position No. 2: 30 mm above the 2" connection - optimal for visual observation. The secondary mirror can be slightly smaller, we recommend a secondary mirror with 63 mm (minor axis) which is sufficient even for 2" eyepieces.
Focus position no. 3: 90 mm above the 2" connection - this allows you to use the TS2KORRR 0.73x reducer/corrector and change the focal ratio from f/4 to f/2.9. The combination is then designed for cameras up to APS-C format. We recommend the secondary mirror with 70 mm (minor axis).


Ordering the special versions in our online shop:
On the last page of the order process, where you can complete the order, you have a text field. Here you simply copy the desired focus position into it. Please note that this is then a special version with delivery time.

Assembly and collimation instructions
The telescope is delivered disassembled into several units for safety. The assembly and adjustment are not complicated, you can download the instructions in advance. The PDF can be found here.

Production video
Our customer Jörg Weiskopf made a video in German language about his new UNC and also showed the production: Link to the video (from 7:21 the visit to TS begins)

General product video
Teleskop-Service has made an information video about the UNC and ONTC telescopes:


Telescope type:Newtonian telescope
Diameter primary mirror:200 mm - 8"
Focal length:1200 mm
Focal ratio:f/6
Primary mirror:Parabolic primary mirror - mirror substrate quartz glass
Optical quality:Significantly better than diffraction limited
Reflectivity of primary mirror and secondary mirror:94 %, enhanced
Diameter secondary mirror:50 mm mm minor axis - other secondary mirror sizes on request
Tube:Carbon tube - solid material with reinforcing aluminum ring - wall thickness 2.5 mm
Tube inner diameter:230 mm
Focuser:2" UNCN2-G2 rack and pinion focuser with M54x0.75 adapter thread for screw adaptions
Weight:approx. 8 kg with tube rings
Length:approx. 1200 mm (depending on focus position)
Dimensions:The specified dimensions and weights are to be regarded as approximate values, they may vary depending on individualization.
TS UNC Carbon Newtonian telescope with 2" UNCN2-G2 focuser
Aluminum tube rings with two flat bearing surfaces per ring
Dust caps for the telescope opening and the focuser
Vixen style finder shoe
8x50 finder with finder bracket
Reduction from 2" to 1.25"
Fan for cooling down the primary mirror
Instructions for assembling and collimating the telescope

Astrophotographic results obtained with this telescope on Astrobin
Here you can find some astrophotographs made with this telescope model: Link to Astrobin

JUPITER - Newton TS UNC200 F5
ToU Cam
Stacking: Registax 6
... made by French Amateur Astronomer Jean-Baptiste Gordien - Congratulations!

Jupiter UNC 200mm f5

More results:
http://www.astrosurf.com/ubb/Forum3/HTML/036322.html




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