GSD300C GSO Dobson Telescope - 12 "300mm 1500mm

GSD300C GSO Dobson Telescope - 12 300mm 1500mm
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Shipping time: In stock + testing In stock + testing
Product no.: GSD300C
MPN: GSD300C
Our previous price 990,00 EUR Now only 849,00 EURyou save 14% / 141,00 EUR
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Products description

Test und Justage GSO GSD300C Dobson 300/1500mm


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-300PX Pyrex Dobson.

How we adjust: About us








 

GSD300C GSO Dobson Telescope - 12 "300mm 1500mm




Opening 300mm / focal length 1500mm
94% forced mirroring for a brighter picture

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

Very good diffraction-limited optics:
GSO produces excellent mirrors with excellent image quality. They can reach the full resolution, with appropriate atmospheric conditions.

Very good eyepiece extraction:
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.

Setting up and getting 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.

The quality check:
We carry out regular tests in our house, so that a consistently high quality is guaranteed.



Observations with the GSD 300 C

With its large opening, the GSD 300 C offers spectacular views into space.
Fine structures in gas nebulae and galaxies, as you can only see from recordings, can already be seen live. Distant galaxies are also within reach of this powerful Newton.
Globular clusters of our galaxy are already dissolved in single stars down to the center. Supernova remains, like the Cirrus Nebula, show a plethora of finest filaments.

Moon and planets will show you, in calm air, many details, even in color. Structures in the Saturn rings or the moons of Jupiter as different sized discs are, if all the surrounding conditions fit, no problem for the exact quality optics of this device.

Operation is still possible by one person. For the transport you need at least a combi, because this device is no longer located on the back seat of a small car.

The design itself is very simple, within minutes the device is ready for use.



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 300C

The centering of objects, as well as the exact tracking, is done by hand in Dobson's 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 plain bearing offers easy adjustment.


The advantages of the ball bearing Crayford Extractor on the GSD 300C

=> 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
Super Plössl 25mm
multivergütet

Okularauszug
2 "Crayford eyepiece extractor
With 1.25 "adapter

viewfinder
Powerful 8x50
Searcher for quick finding


- tube with 2 "Crayford extension
- Rockerbox with ball bearing
- Friction bearing in height
- Eyepiece
- 8x50 viewfinder - multi-purpose lens
- German Manual
- Precise diffraction-limited optics
- Highly reflective coating
- Detailed German manual
- Central marking on the main mirror
- Computer-optimized 9-point main mirror cell

Technical specifications:


Opening / focal opening 300mm / focal length 1500mm
Catching mirror / shading Catching mirror diameter 70mm - Shading 23.3% linear (approx. 5.4% area)
Main mirror / mirror support Precise parabolic mirror - diffraction-limited quality optics made of BK-7
94% mirror for a lighter image
Eyepiece extractor 2 "Eyepiece extractor - complete Made of metal - with reduction to 1.25" (ring clamp and 2 "filter screw thread)
Tube metal tube - height 145cm - diameter 35.7 cm - weight 19.5 kg
Rocker Box height 64 cm - diameter 63,5 cm - weight 13,5 kg
Viewfinder 8x50 Viewfinder with metal holder - fully multivergütet
Standard eyepiece 1.25 "Superplössl 25mm
Instruction manual and adjustment instructions - in English


GSO Dobson 300mm opening - mudguard brackets Thin mudguard braces for more contrast

The less diffraction phenomena, the more contrast - thin reflector struts increase the contrast in the moon and planets.


Good internal swelling of the tube

The tube is dyed in matt black. This results in a clean contrast and prevents unpleasant reflections.
GSO Dobson 300mm opening - friction spring preload of the height bearing

Prevents unintentional adjustment during eyepiece change. An even contact pressure is ensured and allows a clean centering of the object.
GSO Dobson 300mm aperture - eyepiece extension ball bearing Crayford 2 "extension

A clean 2 "eyepiece can be used for 2" and 1.25 "eyepieces.
Computer-optimized main mirror cell Computer-optimized main mirror cell

The computer-optimized 9-point main mirror cell, which is made entirely of metal (with the exception of the plastic mirror bearing points), is also standard.

 
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
 
GSD300C GSO Dobson Telescope - 12 300mm 1500mm
GSD300C GSO Dobson Telescope - 12 300mm 1500mm
GSD300C GSO Dobson Telescope - 12 300mm 1500mm
GSD300C GSO Dobson Telescope - 12 300mm 1500mm
GSD300C GSO Dobson Telescope - 12 300mm 1500mm
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