Maxvision (explore scientific company) triplet 80ED 80/480mm refractor telescope Tube only (Same brand as explore scientific/Bresser)
 
Objective: 80mm
Focal length: 480mm
Optics: Three-piece ED / APO refractive lens
Lens: HOYA FCD1 ED glass
Net weight: about 2.66KG
Use: Astronomy / OTA main lens tube
Interface: 2 inch interface
Product contains: white metal lens barrel + dust cover
Focal ratio: F6
Resolution: 1.5 arc seconds
Concentrating power: 200 times
Extreme magnitude: 11.29 magnitude
Optics: Apochromatic Refractive Mirror
Coating: AR Coating