Achromatic refractor with a lens diameter of 120 mm and a focal length of 600 mm. The large aperture for a refractor and a relatively short focal length make this telescope a very wide field of view. This makes it an excellent proposition for people who want to admire large open clusters, vast nebular objects or entire fragments of the Milky Way. The telescope with the EQ3-2 azimuth mount is a relatively mobile set, which, combined with its small dimensions, means that its transport or storage will not cause any problems. This telescope is also a good option for novice night sky observers. The large field of view possible with this telescope helps a lot in finding objects in the sky.
The set includes a Star Pointer finder and dovetail clamps for mounting the refractor on the assembly. It works well as a small piece of equipment for beginner observers, allowing for comfortable observations of the Moon, the Sun (using an appropriate sun filter) or planets. However, this type of telescope is best for observing large star fields, entire fragments of the Milky Way. With the right eyepieces, it can provide a field of view comparable to wide-angle binoculars at a typically telescopic range. Due to this type of properties, the telescope can be used to observe comets, especially those with extensive plaits. It is very well suited for the visual observation of variable stars. With the use of short-focus eyepieces, this telescope will allow you to observe objects on the Moon’s disc, as well as allow you to admire the planets in a basic way (here we rather recommend Maksutov type structures or refractors with a longer focal length). The construction of the telescope and the use of the azimuth mount make it a useful tool also in nature observations.
Optical system
This telescope is a classic, two-element achromatic refractor. A system of this type guarantees good brightness of the image obtained. The telescope collects about 290 times more light than the human eye at night, providing the ability to observe objects up to nearly 12.5 magnitude (with naked eye visibility up to magnitude 6). The size of the lens is also related to the optical resolution, which in this telescope enables it to separate stars that are more than 1.2 ”apart. In combination with the Baader Semi APO filter, we will remove most of the purple-yellow artifacts resulting from chromatic aberration that occurs in achromatic refractors.
Installation
The telescope tube is mounted on a stable EQ3-2 equatorial mount. It is a relatively massive structure, sufficient for photographing the sky with telescopes up to 150mm in diameter, but at the same time light enough that such equipment can be considered quite mobile. The assembly is equipped with precise micromovements, what’s more, it is possible to connect quite advanced drives such as SynScan GoTo (the so-called Upgrade Kit EQ3-2). The EQ3-2 mount allows for the attachment of telescopes equipped with a Dovetail mounting rail in the Vixen standard.
Spectacle lift
BK1206 is equipped with a 2 «Rack & Pinion eyepiece extractor. The extractor is terminated with a mounting ring with screws clamping 2-inch accessories. There is a standard Sky-Watcher finder attachment on the extractor body. This extractor is compatible with Sky-Watcher extractor drives. -Watcher.
Astronomical observations
1. Solar System
- objects on the lunar surface larger than 1-1.5 km in size;
- sunspots and their structure;
- all the planets of the solar system;
- Mercury and Venus phases
- the little shield of Mars
- Jupiter’s equatorial belts and Galilean moons
- rings of Saturn and the largest moon Titan
- Uranus and Neptune in the form of stars
- motion of asteroids against the background of stars
- observations of bright comets
2. Stars
- about 1.1 million stars across the sky, shining down to about magnitude 12.5
- double and multiple stars separated from each other angularly by more than 1.2 «.
- the colors of the brightest stars
3. Nebulae objects
- almost all objects from the Messier catalog
- hundreds of globular clusters
- hundreds of open clusters
- brighter nebulae
- brighter galaxies
Specifications:
Optics
|
| Type |
Refractor |
| Type of build |
Achromat |
| Aperture (mm) |
120 |
| Focal length (mm) |
600 |
| Aperture ratio (f/) |
5 |
| Resolving capacity |
0,96 |
| Limit value (mag) |
12,2 |
| Light gathering capacity |
290 |
| Max. useful magnification |
240 |
| Tube weight (kg) |
4,0 |
| Tube construction |
Full tube |
Focuser
|
| Type of build |
Gear rack |
| Connection ( to eyepiece) |
2 |
| Gear reduction |
without |
Mount
|
| Mounting type |
Equatorial |
| Type of build |
EQ3-2 |
| GoTo control |
no |
Tripod
|
| Type |
Tripod |
| Max. tripod height (cm) |
121 |
| Min. tripod height (cm) |
71 |
| Canibelle |
yes |
| Accessory plate |
yes |
Included accessories
|
| 1.25» eyepieces |
25mm, 10mm |
| Eyepiece adaptor |
1,25″ — 2″ |
| Finder scope |
Red dot finder |
| Dew Shield |
yes |
| Prism rail |
Vixen-Style |
| Tube clamps |
yes |
| Deviating optics |
Amici prism, 1.25″, 45° |
| Slow motion cable (piece) |
2 |
| Counterweight (piece) |
2 |
| Camera adaptor |
T2 |
General
|
| Special recommendation |
yes |
| Total weight (kg) |
12 |
| Series |
EQ-3 |
Area of application
|
| Moon & Planets |
yes |
| Nebulae & galaxies |
yes |
| Astrophotography |
no |
| Sun |
no (Only with appropriate Sun filter) |
Recommended for
|
| Observatories |
no |
| Beginners |
yes |
| Advanced |
no |
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