Test and adjustment GSD200C GSO Dobson 200 / 1200mm - Action model
This telescope is inspected by us before delivery and in any case pre-adjusted. The eyepiece output is stopped.

Please contact for advice on this telescope.

This telescope will not be shipped. Can be picked up at our hotel.

Alternatively, we recommend SkyWatcher SkyLiner-200P Pyrex Dobson.

How we adjust: About us


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GSD200C GSO Dobson 200 / 1200mm - Action model - from 12 years

GSO Dobson GSD 200C - 8 "Dobson opening 200mm / focal length 1200mm
94% forced mirroring

Dobson telescopes from GSO (Guan Sheng Optics) offer an optimal viewing experience because optics and mechanics are right.

GSD200C GSO Dobson 200 / 1200mm Guan Sheng Optics

Very good diffraction-limited optics ... GSO produces excellent mirrors with excellent image quality. They can reach the full resolution, with appropriate atmospheric conditions. By 94% forced mirroring you get a brighter picture.

Very good eyepiece ...
No cheap tooth and drive, but a high-quality ball-bearing extension (Crayford) is used. Even at the highest magnifications, a precise focusing is possible without problems. The extension is suitable for 2 "and for 1.25" eyepieces.

Solid mechanics ...
The metal tube provides a very high stiffness and the adjustable main and focal mirror mount keep the optical elements very well. The result is that GSO's Dobsons are very stable.

Set up and get started ...
Dobsons from GSO are simple and solidly built, even as a beginner you have the telescope quickly under control. Within minutes, the device is ready for use.

Observation of mists and galaxies
200mm opening offer you structures in Planetary Nebulae and first signs of spiral arms in galaxies. Large fog structures, such as the Cirrus Nebula in the Swan, are already illustrated with details.

Observation of the Moon and the Planets
Especially in this area, the performance of the device is exceptionally good. The very small catching mirror and the thin catching mirror struts allow an excellent contrast and sharpness performance. This is where the high optical quality of the mirror comes into play.

Set up and get started
Just beginners are faced with the easy handling of the TS Dobson. Place the rocker box, which is the lower part of the unit. Hang the tube with the round heights into the cavity and tension the springs. The unit is ready for observation.

The quality of the picture

Not only the high-quality optics, but also the optimized mechanics are the prerequisite for a good image. The thin mudguards
(See picture on the left) increase the contrast and sharpness.

The adjustment of the GSD 200C

It is precisely the centering of objects, but also the exact tracking, which is done by hand on Dobson telescopes. A precise and smooth adjustment must therefore be guaranteed. A spring ensures a controlled contact pressure. This ensures that when the eyepiece is replaced, the device does not move inadvertently. In the azimuth, a Teflon bearing provides easy adjustment.

The advantages of the ball bearing Crayford Extractor on the GSD 200C

=> Much easier than many simple eyepieces
Very sensitive adjustment
=> Incl. Adapter for 1,25 "accessories
=> Gentle clamping of the eyepieces by a clamping ring
=> Thanks to ball bearing shifting-free adjustment = more precise, sensitive focus. The observed object retains its position during the arming process, which is often impossible with simple extracts. In addition, the pull-out responds much more directly, completely without play, which makes the focus much easier.

Delivery:

eyepiece

Plössl 25mm Multivergüttet

abstract

2 "Crayford eyepiece extractor
With 1.25 "adapter

Searcher

Powerful 8x50
Searcher for quick finding

- robust metal tube with 2 "Crayford extension
- Rockerbox with Teflon bearing
- Friction bearing in height
- Plössl eyepiece 25mm
- 8x50 viewfinder - multi-purpose lens
- German Manual
- Precise diffraction-limited optics
- Highly reflective coating with 95%
- Detailed German manual
- Central marking on the main mirror


Technical specifications:

Opening / focal length: opening 200mm / focal length 1200mm
Catching mirror / shading: Catching mirror diameter 50mm - Shading 25% linear (approx. 6.3% area)
Main mirror / mirror support: Parabolic mirror - diffraction-limited quality optics made of BK-7 with 94% forced mirroring
Okularauszug: Good solid 2 "eyepiece extractor with reduction to 1.25" metal
Tube: metal tube - height 115cm - diameter 23cm - weight 9,5 kg
Rocker Box: Height 60 cm - Diameter 50 cm - Weight 11.2 kg
Storage: Storage in azimuth over Teflon bearings. Storage of the height via Teflon washers and spring preload on both sides
Viewfinder: 8x50 viewfinder with metal holder - fully multivergütet
Instruction manual: Assembly instructions and adjustment instructions - in English


Benefit from our experience as a telescope specialist:
 
For more than 30 years we have been passionate about astronomy
Every day we check, optimize & adjust telescopes, mounts & accessories, before handing over to the customer
In this way we know the advantages and disadvantages of the individual products
We sell & recommend only products we use ourselves of which we are convinced
For a comprehensive, brand-independent consultation we take a lot of time for you
As the first astronomy specialist, we offer our customers real-time video consulting,
For to see is to understand
Even after the purchase we are there for you & are still at the side for setup and operation
In case of questions or new entry, we offer instruction & In special cases also on-site service in the Munich area