Sky-Watcher 10" Flextube 250P Collapsible Dobsonian


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  • $635.00
  • Regular price $695.00

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  • 10″ (254 mm) Dobsonian-style Newtonian
  • 1200 mm focal length (f/4.7)
  • 2″ Crayford-style focuser with 1.25″ adapter
  • 4-element Plössl 25 mm and 10 mm 1.25″ eyepieces
  • 8×50 right angle erect-image finderscope
  • Solid rocker-mount with Teflon bearings and tension clutch for altitude
  • Teflon bearing for azimuth
  • Eyepiece height at zenith: 48”

Specifications

Optical Design

Dobsonian

Primary Aperture (mm)

254mm (10″)

Focal Ratio

4.7

Focal Length (mm)

1200mm

Secondary Diameter (mm)

64mm

Secondary Obstruction by Area

6%

Mirror Coatings

94% Aluminum

Glass Type

Borosilicate

Included Finder

8×50 Right Angle Correct Image

Included Eyepieces

25mm and 10mm 1.25″ Super Plossls

Magnification with Included Eyepieces

48x (25mm), 120x (10mm)

Other Included Items

1.25″ and 2″ eyepiece adapters

Focuser

2″ Crayford

GoTo

No

OTA Weight (with accessories)

26.5 lbs

OTA Length

Retracted: 31.5″, Extended: 44″

Zenith Eyepiece Height

48″

OTA Outer Diameter

11.375″

Dobsonian Base Weight

26.5 lbs.

Base Size

Height: 29.5″
Diameter: 20″

Dawes Limit

0.46

Rayleigh Limit

0.55

Limiting Magnitude

14.5

Light Gathering (compared to next size down)

57% (compared to 8″)

Minimum Magnification

36x

Maximum Magnification

500x

    SKU: S11720
    Barcode: 050234117203