Sky-Watcher 12-inch Truss Dobsonian
Telescope (like new)
The Sky-Watcher 12" f/5 Truss
Dobsonian Telescope is a big gun. If you are shooting for well resolved,
elusive 12th-magnitude fuzzies, you now have the power. In fact, a very
significant wow-factor extends down to viewing the stuff people usually concentrate
on with 8" and 10" telescopes. Except they say, "WOW!",
when they view through this super aperture 12" Sky-Watcher telescope. The
12" Dobsonian Telescope by Sky-Watcher is a serious telescope that will be
purchased by a serious amateur who wants serious deep-sky penetrating
resolution. You can be the hit of any star party. Be advised this Light Chariot
is one sweet astronomical ride!
Everything in deep-space appears
brighter, and wider in extension with the SW 12" DOB. Many of the more
challenging to resolve objects in smaller diameter telescopes now reveal their
essential structure. Objects just within the threshold of a 10" aperture
now appear more prominent and may be worth dwelling upon for extended periods.
Comet hunters will delight in the fainter magnitudes that are possible to
discern in the SW 12" DOB. Here at last is a telescope within the
threshold to tackle elusive deep-space gems like the Horsehead Nebula in
Constellation Orion. Located in Constellation Perseus, M76, is a very faint
nebula of 11th magnitude. The SW 12" will capture this baby like you want
to see it. M97, a planetary nebula in Ursa Major is very faint, but as a
serious amateur you'll want to see it. M61, a spiral galaxy in Virgo, will
reveal spiral arms as you would hope to see them, but you will need a SW
12" telescope to resolve them well.
Observing with the 12"
If you have never before observed
through a high-quality, wide-field Dobsonian, like the Sky-Watcher 12"
DOB, you are in for one of the sweetest experiences in amateur astronomy. Some
of amateur astronomy's most revered and enthusiastically observed extra
solar-system objects are now within your reach. Observing with a Dobsonian has
been described akin to shooting ducks in a gallery because it is so easy to
find your target. Just swing your Sky-Watcher DOB to the quadrant of sky to be
searched, and scan the vicinity. An 8x50 mm right-angle erect viewfinder helps
your search for those elusive fuzzies when star-hopping. At low power,
deep-space objects leisurely drift through the field of the Sky-Watcher
12" DOB, so constant mechanical adjustment of the telescope's orientation
isn't needed to keep objects in the field of view.
The standard-equipment backlash-free
2" Crayford Focuser ensures ultra smooth focusing adjustments.
Multi-coated, 4-element Plossl eyepieces (25 mm and 10 mm) provide a spacious
52-degree Apparent Field of View. To ensure mechanical ease-of-use, Sky-Watcher
uses a high-performance Teflon bearing system in both axes combined with tension
adjustment in altitude to facilitate setting the appropriate amount of
friction, assuring smooth vertical and horizontal manual movement without
free-play from small bumps or gusts of wind. This also eliminates the need to
have a balanced optical tube as in an equatorial mount.
truss-support concept allows the optical tube's front and back cells to
collapse together, aligning on the truss support rods which can then be locked
down for easy and secure telescope transport. This innovation provides a one
piece, low-hassle OTA design, mechanically simple and results in large aperture
telescopes that can be reasonably handled and transported by one individual.
Sky-Watcher Uses Quality Components
The polishing process for primary
and diagonal mirror yields smooth mirror surfaces ensuring good contrast, and
properly corrected optics show minimum alterations to the optical wave-front.
On each primary mirror, and elliptical diagonal mirror aluminum is vacuum
deposited to the front glass surface and then over coated with hard quartz
(SiO4). Additional layers of Titanium Dioxide (TiO2) and (SiO4) are then
applied. Dust covers help keep your DOB clean when not in use. The mechanical
and structural components of the OTA exhibit rigid construction and outstanding
stability. Mount design, while simple, facilitates smooth motions about both
- Sky-Watcher 12" f/5 Truss Dobsonian Reflector
- Solid Dobsonian Rocker Mount
- Collapsible Truss-Tube Structure
- Telrad upgrade
- 2" Crayford-Style Focuser with 1.25" Adapter
- 25 mm Super Plossl Eyepiece - 1.25"
- 10 mm Super Plossl Eyepiece - 1.25"
- 1.25" and 2" Eyepiece Adapters
- Dust Covers and light shield for truss
- Telescope Aperture 305mm (12")
- Telescope Series Sky-Watcher Truss DobsonianTelescope
- Mount Type Dobsonian
- Type of Electronics Manual
- Mount No Electronics
- Optical Design Newtonian Reflector
- Focal Length (mm)1500
- Focal Ratio f/4.9
- Optical Coatings Aluminum with Multi-Overcoats
- Limiting Stellar Magnitude 14.9
- Lowest Useful Magnification 44x
- Highest Useful Magnification 720x
- Light-Gathering Power Compared to Human Eye 1898x
- Focuser Style Crayford/Crayford Style
- Focuser Size 2"
- Focuser Speed Single Speed
- Eyepiece Height at Zenith (in.) 55.5
- Reflector OTA Length - Extended (in.) 55
- Reflector OTA Length - Retracted (in.) 36
- Telescope OTA Outside Diameter (in.)14.25
- Dobsonian Base Weight (lb.) 38.3
- Dobsonian Base Dimensions (in.) 29 x 25
This scope is a pure light bucket.
But it is heavy. Even with disassembly it's heavy. Perfect for
two people like father-son, mother-daughter. It would not be a good fit for
individuals in apartments or those that have to haul this telescope over long
distances, unless you have help.
The scope and accessories are in
great condition. I'm selling this telescope since I'm now too old and this telescope
is just too much for me since I don't have someone to assist me. Thank
Filed under: High-End Telescope Auctions (USA)