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Specifications – Orion SKYQUEST #27189 XT12I User Manual

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8. specifications

skyQuest Xt6i intelliscope
Primary mirror: 150mm diameter, parabolic, center marked
Primary mirror material: Low thermal expansion optical glass
Mirror coatings: Enhanced-reflectivity (94%) aluminum, SiO

2

overcoat
Secondary mirror minor axis: 34.5mm
Focal length: 1200mm
Focal ratio: f/8.0
Focuser: Rack-and-pinion, accepts 1.25" eyepieces
Altitude bearing diameter: 5.75"
Optical tube material: Rolled steel
Azimuth pad material: Teflon
Altitude bearing material: UHMW polyethylene
Eyepieces: 25mm & 10mm Sirius Plössl, multi-coated, 1.25"
Eyepiece magnification: 48x and 120x
Finder scope: 6x30mm, right-angle correct-image, 7° field of
view
Eyepiece rack: Holds three 1.25" eyepieces
Optical tube weight: 13.5 lbs.
Base weight: 20.9 lbs.
Tube length: 45.5"
Tube outer diameter: 7.25"

skyQuest Xt8i intelliscope
Primary mirror: 203mm diameter, parabolic, center marked
Primary mirror material: Low thermal expansion optical glass
Mirror coatings: Enhanced-reflectivity (94%) aluminum, SiO

2

overcoat
Minor axis of secondary mirror: 47mm
Focal length: 1200mm
Focal ratio: f/5.9
Focuser: Crayford, accepts 2" and 1.25" eyepieces with
included adapter
Altitude bearing diameter: 5.75"
Optical tube material: Rolled steel
Azimuth pad material: Teflon
Altitude bearing material: UHMW polyethylene
Eyepieces: 25mm & 10mm Sirius Plössl, multi-coated, 1.25"
Eyepiece magnifications: 48x and 120x
Finder scope: 9x50mm, right-angle correct-image, 5° field of
view
Eyepiece rack: Holds three 1.25" eyepieces and one 2"
eyepiece
Optical tube weight: 20.3 lbs.
Base weight: 21.3 lbs.
Tube length: 46.5"
Tube outer diameter: 9.25"

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