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gsd400tdi

GSO Guan Sheng Optical
in stock
GSO Dobsonian 400/1800 -Truss Tube Design


instead 1.998,00 EUR
only 1.898,00 EUR
incl. 19 % Tax
excl.Shipping costs
Description
GSO Dobsonian 400/1800mm - Truss Tube Design

GSO 16

 

GSO Dobsonian GSD 400 T

Aperture 400mm / Focal Length 1800mm

Dobsonian telescopes from GSO (Guan Sheng Optical) offer perfect fun of observing - both the mechanical and optical quality are on a very high level.

Optical Performance ...
The telescope is equipped with a high quality GSO parabolical primary mirror. We guarantee a diffraction limited performance.

As a result you get sharp and contrasty images of the moon and the planets as well as impressive views of countless deep sky nebulae and galaxies. Many details can be seen in these nebulae.

High Quality Focuser ...
The GSD doesn't have a cheap rack and pinion focuser, but uses a high quality Crayford focuser. Even at high magnifications focusing is easy and smooth. The focuser is compatible with 2" and 1.25" accessories.

High Mechanical Quality ...
The metal tube is very sturdy. The primary and secondary mirror cells hold the optical elements securely in place. As a result the GSO Dobsonians do not easily lose collimation.

Simple Operation ...
The telescope is operated with ease by a single person. The weight and dimensions are small enough to be handled by one person as well. The tube will fit on the back seats of most cars.

Using a Dobsonian is very simple. The telescope is moved manually around a horizontal (azimuth) and vertical (altitude) axis. An azimuth roller bearing and an adjustable tension altitude bearing are used to offer good smoothness of operation.

Quality Control ...
We do careful tests of all shipments so that we can guarantee a constantly high level of quality.

 

Visual Performance of the GSD 400 T


With its enormous aperture of 400mm the GSD 400 shows myriads of deep sky objects in detail. You have nearly twice the light gathering power of a 300mm Dobsonian. Several objects will already begin to show colour. For example, the Great Orion Nebula will glow in a fascinating greenish hue.

At the same time the excellent parabolical primary mirror offers excellent images of the moon and the planets, only limited by atmospheric seeing conditions. Under good conditions you will be able to see details invisible in smaller telescopes.

 "A lifetime of observing isn't enough to see everything this large telescope has to offer on the night-sky!"

 

GSO Micro Focuser

Truss Tube Design

Above a certain size telescopes can no longer be considered portable. This sets an upper limit for the useful aperture of classic telescope designs. At the same time the old rule "aperture can only be replaced by even more aperture" dictates that a telescope should be as large as possible for maximum light gathering power.

The solution for this problem is the truss tube design. It allows you to split the telescope into smaller, more compact parts that can be transported more easily.

The new GSO Truss Dobsonians use this principle and thus offer a greater aperture than would be considered portable in a conventional tube design. On the whole the 400mm Truss Tube Dobsonian can be transported just as easily as the classic 300mm Dobsonians.


High Quality 2" - 1:10 Micro Crayford Focuser 

... a high quality, high performance Crayford-type focuser with 1:10 dual speed micro-focusing knob allows you to fully use the excellent optical quality the GSO Dobsonian has to offer. The focuser has a 2" brass compression ring. An adaptor for 1.25" eyepieces is included - of course also with 1.25" compression ring.

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E-Mail: info@teleskop-service.de · Telefon: +49 (0)89-1892870 · Fax: +49 (0)89-18928710
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