Refraction astronomical telescope double objective lens set 154mm DIY self-made
Suitable for primary lens diameter: 100-200mm
Astronomical telescope optical system: refraction
Lens Diameter: 154mm,
Effective diameter: 150mm
Attention: 2pcs lens makes a objective lens group.
Package includes: 2pcs lens per quantity
objective lens D=154mm F=750mm multilayer green filmdiameter 154mm
focal length 750mm
Coating Four-sided multilayer broadband film (400-700nm)
Combined image quality 1/4-1/8
Diameter tolerance +0/-0.12 mm
Center thickness tolerance ±0.2mm
Focal length tolerance ±0.1%
Finish 60/40
Eccentric 1'
