Sky-Watcher Flextube 300P - SKU# S11740

by Sky-Watcher
$1,335.00

Sky-Watcher 12" DOB: Deep-Space Hero!

Astronomy is a great hobby to share, and a SW 12" DOB makes you potentially the hit of any star party. Well, so much for ego satisfaction—the point is—the SW 12" DOB is a serious telescope that will be purchased by a serious amateur who wants serious deep-sky penetrating resolution. Be advised this Light Chariot is one sweet astronomical ride!

Viewing through the SW 12" DOB

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. The list goes on, and you will delight in planning your own journey of exploration. The incremental resolving power of the SW 12" aperture is beyond just being impressive, it's within amateur astronomy's super aperture threshold where the lucky observer is able to resolve well, many, many objects that smaller telescopes just don't have the horsepower to detail satisfactorily because they can't pull in enough light.

The 12" Sky-Watcher Establishes a New Standard in Large Aperture Ease-of-Use

To ensure mechanical ease-of-use, SW 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. Sky-Watcher's Teflon bearing system is preferable to the use of ball-bearings. Ball-bearings make unintended movement of the optical tube more difficult to control. Fortunately, at low power, deep-space objects leisurely drift through the field of the SW 12" DOB, so constant mechanical adjustment of the telescope's orientation isn't needed to keep objects in the field of view. Sky-Watcher's revolutionary 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.

Sky-Watcher Uses Quality Components Throughout

Pride of workmanship manifests itself in high quality standards of optical and mechanical fabrication. 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 are provided to help keep your DOB clean when not being used. The mechanical and structural components of the OTA exhibit rigid construction and outstanding stability.

Specifications

SKU S11740
UPC 050234117401
Optical Info
Optical Design Newtonian
Mirror Coatings 94% Aluminum
Glass Type Borosilicate
Primary Aperture (mm) 305
Primary Edge Thickness 38mm
F/Ratio 4.9
Focal Length (mm) 1500
Secondary Diameter 70mm
Secondary Obstruction (by diameter) 23%
Secondary Obstruction by Area 5%
Observational Info
Dawes Limit 0.38
Rayleigh Limit 0.46
Limiting Mag. 14.9
Minimum Magnification 43
Maximum Magnification 600
Light Gathering (compared to next size down) 44%
General Info
Focuser 2" Crayford
OTA Length (Retract/Ext.) 36"/55"
OTA Outer Diameter 14.25"
OTA Weight (with accessories) 46.2
Dob Base Weight 38.3
Dob Base Measurements 29"x25"
Zenith Eyepiece Height 55.5"
Accessories
Included Finder 8x50 RACI
Included Diagonal No
Included Eyepieces 25/10 Plossl
Magnification w/ Included Eyepieces 60x/150x
Included Case No
Corrector No

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