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Stargate 18″ Truss Dobsonian

$5,999.00

  • Fused conical primary mirror
  • Cellular secondary mirror
  • Dual speed 2” Crayford focuser
  • Two section truss poles (compact transport)
  • Minimalist, all metal construction
  • Fast f/4.1 optics for short eyepiece heights
  • 18” provides 27% more light than a 16” telescope
  • 94% reflectivity coatings
SKU: S11900 Category:

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Additional Information

Optical Design

Dobsonian

Primary Aperture (mm)

458mm (18”)

Secondary Diameter (mm)

120mm minor axis

Secondary Obstruction by Area

7%

Mirror Coatings

94% Aluminum

Glass Type

Borosilicate

Focal Length (mm)

1900mm

Focal Ratio

4.1

Light Gathering (compared to next size down)

Captures 27% more light than a 16” telescope

Zenith Eyepiece Height

74.5”

Rayleigh Limit

0.31

Dawes Limit

0.25

Limiting Magnitude

15.9

Minimum Magnification

65x

Maximum Magnification

902x

GoTo

No

Focuser

2″ Dual Speed Crayford

Included Eyepieces

28mm LET eyepiece and 10mm eyepiece

Included Finder

9×50

Other Included Items

2.3lbs counter weights (3), Shroud, Truss clamps

Upper Cage Weight

11lbs.

Truss Pole Weight

2.6lbs each. 16lbs total

Mirror Box Weight

62lbs.

Dobsonian Base Weight

40lbs.

Fully Assembled Weight (with weights)

129lbs.