Refraction astronomical telescope double objective lens Group 154mm DIY F2250mm

Description

Refraction astronomical telescope double objective Lens group 154mm
Astronomical telescope optical system: refraction
Lens Diameter: 154mm, Focal Length 2250mm
Effective diameter: 150mm
Attention: 2pcs lens makes a objective lens group.
Package includes: 2pcs lens per , lens group.
this Group contains the Lens holder
,
o
bj
ective lens
D=154mm F=2250mm multilayer blue film
diameter
154mm
focal length
2250mm
Coating
multilayer 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'
Delivery details
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