SPECIFICATION：

• Optical Design: Apochromat Refractor

• Lens Design: Quadruplet

• Glass Material: Two‑element HOYA Glass ( One is FCD100, the other is FCD1)

• Focuser: 1:10 Rack and Pinion Focusing

• Aperture: 80 mm (3.15 in)

• Focal Length:  400 mm (15.75 in)

• Focal Ratio: F/5

• Finderscope: 8x50

• Eyepiece: 70° Ultra Wide 20mm Eyepiece

• Diagonal: 2" Dielectric Coatings

• Tube Rings: (D-Style) Dovetail Plate

• Optical Coatings:  Fully Multi-Coated

• Fully Illuminated Field:  44 mm (1.73 in) Optical Tube

• Length(Include Camera Adapter): 41.8cm (16.5 in) Optical Tube

• Weight:  4.1 kg (9.1 lbs)

• Carbon Fiber Optical Tube and Lens Hood