Skyliner 200/1200
Kodas: DV-2129
kita
Feeling lost
between many telescope designs? Just want a simple to use good
all-around telescope for visual observing at reasonable price? Can’t
afford good refractor or catadioptric? Even reflectors, with large
equatorial mounts seam too bulky and inconvenient? Look no further, you
found it. Sky-watcher Skyliner series Dobsonian reflector is a very
reasonable priced, good quality telescope. You won’t find any cheaper
of this aperture! But don’t think that price cut will affect quality of
optics, you pay less because the Dobsonian mount is very cheap to
manufacture. A simple, elegant form of an alt-azimuth mount made to
carry a Newtonian reflector was popularized by John Dobson in the late
1970's. The Dobsonian mounted telescope is popular among amateur
astronomers and telescope makers because of its simplicity. In its
simplest form, the Dobsonian mount consists of a box which allows the
optical tube assembly to pivot in altitude, while the box itself is
swiveled on a base in azimuth. The mount is very sturdy and very easy
to operate.
Newtonian reflector for this mount was chosen for many reasons, but the
main is in a word – value. A Newtonian reflector offers more
performance for your observing dollar than any other telescope type.
The reflector's large light-gathering area and relatively short focal
length can provide bright images of deep space objects that are too
faint for any small aperture refractor to see. And the reflector's
large aperture can resolve details within those objects with a
precision no small scope can match – if the seeing is good. When
choosing a reflector always make sure you get a telescope with
parabolic primary mirror, since it is only form that will correctly
concentrate gathered light. The second optical element is a secondary
mirror. Light diffracted, or scattered, by this mirror can reduce image
contrast in lunar and planetary observing, masking subtle surface
details compared with an unobstructed refractor image. In addition,
diffraction spikes on star images, due to the spider vanes that hold
the diagonal mirror, can mask faint binary star components and smear
globular cluster detail. But don’t worry you’ll have plenty of aperture
to compensate these drawbacks. In addition, unlike refractors or
catadioptric telescopes, a reflector requires frequent recollimation or
alignment of its optics, and its exposed mirrors mean that periodic
cleaning will also be required. However, this maintenance typically
averages only a few additional minutes of work per observing session,
and reflectors we sell are always collimated before sale. So for
serious visual observing of faint galaxies and nebulas, as well as for
more-than-acceptable lunar and planetary observing, you'd be
hard-pressed to equal, much less surpass, the excellent
price-to-performance ratio of a Newtonian reflector. Reflectors have
been a best-seller for over 300 years – and sheer value for the money
is why.
This 203mm Skyliner is a perfect choice for those, who is looking for
simple to use telescope. This scope is universal, suitable for anything
starting from planetary observations to more serious deep sky study.
Primary mirror parabolic, focal ratio of f/6 works very well on deep
sky. Coated with high reflectivity aluminum and protective layer of
silicone dioxide. The unique design feature of Skyliner series
Dobsonian is Tension Control Handle. By providing such a tension
adjuster, the telescope does not need to be balanced in order to stay
in position. The tension adjuster can be tightened such that the
optical tube can stay in a position but can still be moved when
prompted to adjust the position of the optical tube. Alternatively, the
tension adjuster can be completely tightened to lock the optical tube
in position. In general this telescope combines great value for money,
with ease of operation. Highly recommended for beginners.
Be aware that
although Dobsonian mount is perfect for visual observing photography is
not possible. So if you planning to take some deep sky pictures in the
future, consider purchasing good equatorial mount. Also if you’re
dreaming about visible details and thousands deep sky objects to
observe 250 mm models could be better choice for you.
- Magnifications (with eyepieces supplied): x48 &
x120
- Highest Practical Power (Potential): x400
- Diameter of Primary Mirror: 203mm
- Telescope Focal Length: 1200mm (f/6)
- Eyepieces Supplied (1.25"): 10mm & 25mm
- Parabolic Primary Mirror
- Diffraction Limited Optics
- 0.5mm Ultra-Thin Secondary Mirror Supports
- 9x50 Finderscope
- Direct SLR Camera Connection
- Wooden Alt-Azimuth Mount with Accessory Tray
Gamtos stebėjimas:
Mėnulio stebėjimas:
Planetų stebėjimas:
Dvinarių žvaigždžių, žvagždžių spiečių stebėjimas:
Galaktikų, ūkų stebėjimas:
Astrofotografija:
Objektyvo/veidrodžio skersmuo, mm: 203
Dangos: nėra
Židinio nuotolis: 1200 mm
Židinio santykis: f/6
Įvorė okuliarams: 2
Ieškiklis: 9x50
Rekomenduojamas didinimas: 406x
Standartinė komplektacija: 10mm ir 25mm okuliarai
Perkamiausi
