TS-Optics 8" f/6 Dobsonian Télescope Version Deluxe, GSD680

EUR 849,00 Achat immédiat, EUR 21,90 Livraison, 14-Jour Retours, Garantie client eBay
Vendeur: wolfi24 ✉️ (49.983) 100%, Lieu où se trouve: Parsdorf, DE, Lieu de livraison: WORLDWIDE, Numéro de l'objet: 374121640025 TS-Optics 8" f/6 Dobsonian Télescope Version Deluxe, GSD680. GSO 8-inch f/6 Dobsonian Telescope Deluxe Version

Powerful and transportable GSD 680 Dobsonian Telescope with 8 inch aperture and 1200 mm focal length. Successful observations from the first night on - with this first class telescope. This dobsonian is also a very good beginner telescope. : - High Quality parabolic main mirror with 94% reflection for a brighter image. - Rigid metal tube for good mechanical stability. - Main mirror cell and secondary mirror holder - made of metal - fully adjustable - 2" Crayford focuser, dual speed 1:10 for precise focusing. - High Quality accessories like 2" 30 mm Erfle Wide Angle eyepiece, 8x50 achromatic finder, 9 mm Quality Plössl, ... - New friction and balance system in altitude and azimut roller bearing system for very fine and precise moving the telescope.    

Join the growing number of happy users of GSO quality telescopes!

We are very proud of GSOs exceptional image quality at a very affordable price.

Thousands of objects are within reach of this 8" Newtonian-style telescope. With its highly refined Dobsonian style mount the telescope is the ideal companion for discerning beginners and for advanced observers alike! Galaxies will reveal their spiral structure. Planetary nebulae will display splendid detail where a smaller telescope will hardly show anything. The diffraction limited quality optics from GSO will at the same time offer razor sharp images even at high magnifications. Planets and the moon will be seen in great detail. The visibility of details is not limited by the telescope, but rather by observing conditions!

Optical Quality The centerpiece of any telescope is its optics. GSO produces parabolic primary mirrors of very high quality. It is our firm opinion that GSO offers better mirrors than typical in this price range. We guarantee a diffraction-limited performance, which essentially means that the performance is limited by observing conditions and the laws of physics rather than by the telescope itself!

GSO 2" Crayford Focuser: This is one of the best focuser this manufacturer has to offer. It is far superior to most classic rack-and-pinion focusers:

- no image shift when focusing

- large load capacity: up to approx. 3 kg with a firm friction setting

- 1:10 dual speed microfocuser for far improved focusing precision

- compression rings for 2" and 1.25" accessories

New Altitude Tension & Balancing System: 

On most Dobsonian telescopes the altitude bearing is a very simple design. 

GSO has developed an improved altitude bearing with additional functionality: 

A strong steel shaft bears the weight of the tube. 

The tube is guided and kept in position through two CNC machined surfaces. 

The desired tension can be freely adjusted with a large knurled knob on both sides. 

This is particularly helpful when changing eyepieces where the telescope is temporarily out of balance.

Balancing System: 

This is another major improvement of this bearing system. The telescope can be balanced by moving it up or down a couple of centimetres. This may be necessary when adding a second finderscope (like a Telrad) or when using very heavy eyepieces or a binoviewer. A scale on both sides allows you to easily achieve a symmetric bearing position.

Azimuth Roller Bearing:

A simple teflon friction bearing used by some other manufacturers (also by GSO in the past) offers a rather stiff motion that makes tracking at high magnifications difficult. This becomes particularly obvious when the telescope is pointed near the zenith so that the lever arm becomes very short. In this position tracking is almost impossible in some Dobsonians!

The new GSO Dobsonians have a modern industrial roller bearing for a very easy movement. Metal plates above and below the bearing prevent the rollers from sinking into the softer wood of the rocker box, so the movement will remain smooth even after years of use.

 

Technical Data:

- Aperture: 8" / 200 mm

- Focal Length: 1200 mm

- Focal Ratio: f/6

- Main Mirror: BK7 with 94% forced reflection

- Optical Quality: Parabolical main mirror - better, than diffraction limited

- Resolution: 0.58"

- Limited Mag: 14.5 mag

- Secondary mirror obstruction: Only 25%

- Tube diameter: 230 mm

- Tube length: 1150 mm

- Tube weight: 9.5 kg

- Rockerbox mount dimensions: Height 600 mm / Diameter 500 mm

- Rockerbox mount weight: 11.2 kg

- Collimation: Center Mark on the main mirror

  

In The Box:

- GSO Dobsonian Telescope

- Fan behind the main mirror

- 8x50 Finder with achromatic optic

- 2" Crayford focuser - 1:10 micro - reduction from 2" to 1.25"

- 30 mm 2" Wide Angle ERFLE with 70° field for good overfiew

- 9 mm Super Plössl - multicoated

- 2" Extension tube

- eyepiece and accessory tray for eyepieces and filters

- Collimation manual

 

For further selection of telescopes, cameras and accessories, please visit us in our online shop at teleskop-express and enter the product no.   GSD680  

    PAYMENT SHIPPING
    • Condition: Neuf
    • Type de prisme: Ritchey-Chrétien
    • Marque: TS Optics
    • Numéro de pièce fabricant: GSD680
    • Type: RC
    • EAN: 4250477978159

    PicClick Insights - TS-Optics 8" f/6 Dobsonian Télescope Version Deluxe, GSD680 PicClick Exclusif

    •  Popularité - 2 personnes suivent la vente, 0.0 de nouvelles personnes suivent la vente par jour, 659 days for sale on eBay. Bonne quantité suivi. 0 vendu, 3 disponibles.
    •  Meilleur Prix -
    •  Vendeur - 49.983+ articles vendu. 0% évaluations négative. Grand vendeur avec la très bonne rétroaction positive et plus de 50 cotes.

    Les Gens ont Aussi Aimé PicClick Exclusif