Sky-Watcher BK 909 AZ3 telescope
- description
- technical data
- Reviews
- Goes Well With
The telescope is a traditional achromatic refractor featuring a lens objective with a 90 mm diameter and a 900 mm focal length. The objective’s focal ratio stands at f/10.
A high-quality 6x30 finder and an AZ3 azimuthal mount are included. Despite its robust capabilities, the mount remains lightweight, enabling smooth vertical and horizontal rotation. Enhanced observation accuracy is achieved by utilizing micromovement controls on both axes.
A standard 1.25" rack-and-pinion focuser comes equipped with a locking screw mount for a diagonal adapter. Notably, the focuser is compatible with the Sky-Watcher focuser drive. Observation of all Messier catalog objects and a significant part of the NGC catalog is possible with this instrument.
Included with the telescope
6x30 finder
1.25" eyepieces – Super 25, Super 10
1.25" 45 degree diagonal prism
Technical data
Objective diameter: 90 mm
Telescope series: AZ3
Optical system of the telescope: refractor
Objective focal length: 900 mm
Focal ratio: 10
Eyepiece focal length 1: 25 mm
Eyepiece focal length 2: 10 mm
Finder: optical 6x30
Tripod: aluminum LT1
Largest useful magnification: 180
Smallest useful magnification: 13
Stellar magnitude limit: 12.1 mag
Resolution (Dawes): 1.29 arc seconds
Light gathering power (compared to the naked eye): 165
Tube length: 910 mm
Telescope control: micromovement knobs
Magnification with eyepiece 1: 36
Magnification with eyepiece 2: 90
Diagonal adapter: 45st. / 1.25
Mount: AZ3, azimuthal
Focuser: rack-and-pinion
Focuser diameter: 1.25
Tube weight: 2.5 kg
Mount weight: 3.9 kg
Manufacturer Sky-Watcher, PRC
Militaria.pl is a premium dealer of Sky Watcher.
Sky-Watcher is a brand created in 1999 by Synta Technology Corporation from Taiwan, which is now the largest manufacturer of amateur astronomical equipment in the world. Its product range includes telescopes from simple models for beginners to advanced designs such as ED refractors, Esprit astrographs, and Maksutov systems. Dobsonian telescopes are extremely popular, including the iconic models with a mirror diameter of up to 16 inches, as well as the professional EQ8 equatorial mounts valued by astrophotographers. Since 2008, the company has been developing innovative Flex Tube Dobsonian telescopes with an extendable tube, which have become a distinctive symbol of Sky-Watcher in the world of astronomy.
| Weight | 6,4 g |
|---|---|
| Objective lens diameter (mm) | 90 |
| Telescope type | Refractor |
| Focal length | 900 mm |
| Lens speed (f/x) | f/10 |
| Maximum magnification | 180x |
| Telescope mount | AZ Azimuth |
| Finderscope in the set | Yes, optical |
| Limiting magnitude (magnitudo) | 12,1 mag |
| Replacement glasses in the set | Yes |
| Tripod material | Aluminium |
| Tube length | 910 mm |
| EAN | 5901691609099 |
| Manufacturer code | SW-2107 |
| Brand | Sky Watcher |
| EAN |
