D106F600 D106F900 Double Separated Blue/Green Film DIY Refracting Astronomical Telescope Objective Lens (D106F900 Blue Film)

KWD 68

ColorD106F900 Blue Film

Special Features

🔭Product Name: D106 Refracting Astronomical Telescope Double Separation Objective Lens
🔭Caliber D: 106mm；Focal length F: 600mm/900mm Optional
🔭D106F600 Multi-layer blue film coating: four-sided multi-layer blue film; 🔭D106F600 Multi-layer green film coating: four-sided multi-layer broadband film (400-700nm)；
🔭D106F900 Multi-layer blue film coating: four-sided multi-layer blue film； 🔭D106F900 Multi-layer green film coating: four-sided multi-layer broadband film (400-700nm)
🔭The lenses are two refracting double separation objective groups, which are used for astronomical telescope objectives and collimating objectives.
🔭The objective lens base is made of aluminum alloy material, and the two are composed of the objective lens base and the objective lens pressure ring. The surface is treated with oxidized black. The outer end of the mirror base has internal thread, and the inner end of the pressure ring is external thread, and the glass is tightened by internal and external thread, and the connection is fixed by three self-tapping screws.
🔭The objective holder is suitable for connecting the external diameter of the objective 106mm directly to the 110mm plastic PVC pipe.
🔭1 Pcs/Package

Description

🔭Refractive astronomical telescope objective lens D=106mm

🔭Diameter: 106mm

🔭The focal length F: 600mm Blue Film / 600mm Green Film / 900mm Blue Film/900mm Green Film Optional

🔭Coating:
D106F600 Multi-layer blue film coating: four-sided multi-layer blue film;
D106F600 Multi-layer green film coating: four-sided multi-layer broadband film (400-700nm)；
D106F900 Multi-layer blue film coating: four-sided multi-layer blue film；
D106F900 Multi-layer green film coating: four-sided multi-layer broadband film (400-700nm)

🔭Combined image quality :1/4-1/8

🔭Diameter tolerance :+0/ -0.12mm

🔭Center thickness tolerance :±0.2mm

🔭Focal length tolerance :±0.1%

🔭Finish :60/40

🔭Eccentric :1'

🔭Note: two refracting double separation objective groups, which are used for astronomical telescope objectives and collimating objectives.