The Sky-Watcher Dobson " Retro-Classic" Telescope with Float Glas mirror.
These instruments offer an incredible aperture-to-price ratio. The Dobsonian mount, is a very simple but effective method of mounting a Newtonian Reflector, based on the alt-azimuth principle. Fast and easy to set up, the Dobsonian mount consists of a box-type mounting which allows the telescope to pivot in altitude, while the box itself is rotated on a base in azimuth. The secret of the design is to correctly balance the optical tube and to use frictional materials, which allow it to move easily when nudged but to stay in position when not. The mount is designed to be driven by hand as opposed to slow motion controls. Tube material: Aluminium
The telescope has two handy carryes wich allow to handle and adjust the tube in each attitude.
The serial Crayford 2" Focusser with the 1,25" Adaptor works very smooth. It guarantee a shifting free sharp focussing.
| Tabellary Data: |
| Aperture |
200 mm |
Focal length
|
1000 mm |
Focal ratio
|
f/ 5 |
Main mirror
|
parabolic |
Rezolution power
|
0,6 arc sec.
|
Diameter secondary
|
50 mm |
| Obstruction |
25 % |
| Focusser |
2" Crayford w 1,25" Adapt. |
| Mirror |
Aluminized and coated |
| Finder |
9 x 50 |
| Weight |
18 kg |
accessories.:
2 Eyepieces 1,25" Super 25 mm and Super 10 mm
Rockerbox
Tools
