Adapter Threads:
M48 (2"), M42 (1.25")
Aperture:
80mm (3.15")
Camera Compatibility:
Full Frame, APS-C, M4/3
Focal Length:
400mm
Focal Ratio:
f/5
Focuser:
Dual-Speed 2" Rack & Pinion
Focuser Travel:
50mm
Image Circle:
44mm
Lens Elements:
3-Element APO
Lens Material:
FPL-53 ED Glass
Mount Type:
No Mount - OTA Only
Optical Design:
Apochromatic Refractor
Tube Length:
380mm (15")
Tube Weight:
2.2kg (4.85 lbs)
Warranty:
ZWO - 2 Years