Refraction astronomical telescope double objective lens set 154mm DIY self-made

Description

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
o
bj
ective lens
D=154mm F=750mm multilayer blue film
diameter
154mm
focal length
750mm
Coating
Four-sided multilayer blue film
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'
objective lens
D=154mm F=750mm multilayer green film
diameter
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'
objective lens
D=154mm F=1200mm mult
ilayer blue film
diameter
154mm
focal length
1200mm
Coating
Four-sided multilayer blue film
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'
objective lens
D=154mm F=12000mm multilayer green film
diameter
154mm
focal length
1200mm
Coat
ing
Four-sided mult
ilayer
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'
Delivery details
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