Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Telescope

BH #SKSW8DOBK • MFR #S11700
Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Telescope
Key Features
  • 8" Dobsonian-Style Reflector
  • 1200mm Focal Length, f/5.9 Focal Ratio
  • Space-Saving Collapsible Tube Design
  • Highly Reflective Borosilicate Mirror
Enjoy the wonders of the night sky with the Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Telescope. This reflector-style Dob offers a generous 8" aperture and 1200mm focal length for dazzling views of planets, the moon, nebulae, galaxies, and more. The optical tube assembly is mounted on a floor base with Teflon bearings for smooth, easy slewing and Sky-Watcher's patented Tension Control Handle, which keeps the telescope locked onto whichever celestial object you've chosen to observe on a given evening. The OTA's collapsible design makes the telescope easier to transport and store.
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Sky-Watcher S11700 Overview

Enjoy the wonders of the night sky with the Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Telescope. This reflector-style Dob offers a generous 8" aperture and 1200mm focal length for dazzling views of planets, the moon, nebulae, galaxies, and more. The optical tube assembly is mounted on a floor base with Teflon bearings for smooth, easy slewing and Sky-Watcher's patented Tension Control Handle, which keeps the telescope locked onto whichever celestial object you've chosen to observe on a given evening. The OTA's collapsible design makes the telescope easier to transport and store.

Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Optical Tube Assembly

The Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Optical Tube Assembly gives users great performance at a reasonable price. Its large parabolic borosilicate primary mirror is treated with a combination of quartz, titanium, and silicon dioxide that brings its reflectivity to over 94%, with a secondary mirror obstruction of just 6% by area. Unlike traditional Dobsonians that tend to be bulky and unwieldy, the Flextube's patented truss design allows it to retract to just 33" for easier transport and storage, and then extends to 44" for observation.

The large 8" aperture draws in copious amounts of light to resolve deep-sky objects like wispy nebulae and galaxies, while also revealing incredible details of the lunar surface and planetary features. Included are 10 and 25mm 1.25" eyepieces, but the focuser comes with an adapter allowing 2" eyepieces to be used.

Optical Tube Assembly
  • Large 8" aperture is able to resolve dim deep-space objects like wispy nebulae and galaxies
  • Fast f/5.9 focal ratio ensures a wide field of view, maximum light throughput
  • Long 1200mm focal length helps to produce fast focal ratio and moderate magnification potential
  • Collapsible truss system saves space during transport and storage, measuring just 33" when trusses are retracted and extending to 44" when set up
  • Borosilicate parabolic primary mirror
  • Quartz, titanium, and silicon dioxide mirror coatings bring the reflectivity to 94%
  • Resolution: 0.57 arcsec (Dawes Limit), 0.69 arcsec (Rayleigh Limit)
  • 48mm secondary diameter mirror; Obstruction: 24% by diameter, 6% by area
  • 44.5" eyepiece height when aimed directly overhead at the zenith
  • 9.375" (23.81cm) outside tube diameter
Focuser
  • Crayford-style is much more precise than the traditional rack-and-pinion focuser
  • Tension control system eliminates gears, resulting in zero backlash for tack-sharp focus on dim objects or objects, like binary stars, that are close together
  • 2" diameter holder allows the use of larger eyepieces and imaging systems that provide a wide field of view and long eye relief to make viewing dim and small deep-sky objects more comfortable
Included Accessories
Eyepieces:
  • 1.25" diameter nosepiece accepts most standard filters
  • 25mm focal length eyepiece produces 48x magnification for wide-field observations, alignment, and viewing lunar surface details
  • 10mm focal length eyepiece yields a high 120x power to make detailed observations of specific portions of the sky or for planetary viewing
Reducer adapter:
  • 2-to-1.25" reducer allows the use of the more common size eyepieces and accessories
Finder:
  • Low 8x power produces a wide field of view for accurate alignment
  • 50mm objective allows users to see dimmer stars for more options during 2-star alignment
  • Mounting bracket included
Sky-Watcher 8" Collapsible Dobsonian Base

Featuring Teflon bearings for smooth slewing and a patented tension control to lock on the target of your observation, this Sky-Watcher 8" Collapsible Dobsonian Base makes it easy to aim your compatible optical tube assembly. The base assembly is outfitted with Sky-Watcher's proprietary Tension Control Handle to increase or decrease friction between the optical tube and sideboards. This floor-based mount measures 29.5 x 20" and weighs 26.5 pounds.

Base Details
  • Tension Control Handle allows users to add or reduce tension, increasing or decreasing the friction between the optical tube and the sideboards
  • Teflon bearings for smooth, easy slewing
  • Dimensions: 29.5 x 20"
  • Weight: 26.5 pounds
UPC: 050234700115

Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Optical Tube Assembly Specs

Key Specs
Optical Design
Dobsonian Reflector
Aperture
203 mm / 8"
Focal Length
1200 mm
Focal Ratio
f/5.9
Focuser
Crayford
Eyepiece Barrel Diameter
1.25", 2"
Type
No
Optical Tube Assembly
Optical Design
Dobsonian Reflector
Aperture
203 mm / 8"
Focal Length
1200 mm
Focal Ratio
f/5.9
Resolution
0.57 Arcsec (Dawes)
0.69 Arcsec (Rayleigh)
Focuser
Crayford
Eyepiece Barrel Diameter
1.25", 2"
Diagonal
No
Finderscope
Yes
Optical Tube Dimensions
33 x 9.4" / 83.8 x 23.9 cm (Retracted)
44 x 9.4" / 111.8 x 23.9 cm (Extended)
Mount
Type
No
Payload Capacity
No
Altitude Adjustment
No
Latitude Adjustment
No
Counterweight
No
General
Mobile App Compatible
No
Packaging Info
Package Weight
31 lb
Box Dimensions (LxWxH)
35 x 18 x 15"

Sky-Watcher 8" Collapsible Dobsonian Base Specs

Key Specs
Mount Type
Alt-Azimuth
GoTo Capability
No
Motor
No
GPS
No
Weight
26 lb / 11.8 kg
Mount
Mount Type
Alt-Azimuth
GoTo Capability
No
Motor
No
Altitude Adjustment
Yes
Latitude Adjustment
Yes
Declination Adjustment
Yes
Right Ascension Adjustment
Yes
Counterweight
Yes
Polar Axis Scope
No
General
Inputs / Outputs
No
GPS
No
Dimensions
29.5 x 20" / 74.9 x 50.8 cm
Weight
26 lb / 11.8 kg
Packaging Info
Package Weight
30.5 lb
Box Dimensions (LxWxH)
30 x 26.5 x 4.5"

Sky-Watcher S11700 Reviews

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