Refraction astronomical telescope double objective lens set 106mm DIY self-made
Astronomical telescope optical system: refraction
Lens Diameter: 10
6
mm,
Effective diameter: 100
mm
Attention: 2pcs lens makes a objective lens group.
Package includes: 2pcs lens per quantity
| objective lens D=106mm F=600mm multilayer green film | |
| diameter | 106mm |
| focal length | 600mm |
| 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=106mm F=900mm multilayer green film | |
| diameter | 106mm |
| focal length | 900mm |
| 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' |