FEATURES:

• Multi-layers anti-reflection coating
• Non-cementing optical substrate coating
• Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL(central wavelength) no deviation affected by temperature change
• Planetary rotation system offers precision and homogeneity of coatings ensuring high value on transmission of pass-band and Optical density of off-band

• Ultra-thin filter cell minimize vignetting by maximize possible clear aperture (clear aperture is 26mm for 1.25”, 45mm for 2")
• Aerometal Material, Precise CNC Machining, Sand Blasting Process, Black Anodized Finish, Extinction Treatment to Prevent Reflection, Laser Engraving No Fading.

DESCRIPTION:

Clear focusing filter is designed to highly pass the visible spectral region 420-680nm at 98.5% transmission.

APPLICATION:

• Use of astrophotography filters, especially narrowband filters, often results in dim images which can be difficult to focus. Clear focusing filter can be used first to clearly focus the image.
• Use with modified DSLRs for higher efficiency and sensitivity by passing visible range with 98.5% transmission
• Act as an outstanding dust shield, which prevents the possibility of dust settling on the lens during long time exposure

Size

Standard 1.25” & 2” | Clip Filter Series

Note : This filter is not designed for sun observation. DO NOT LOOK AT THE SUN WITH THIS FILTER. You would be BLIND if you fail to observe the warning.

Note: For Solar observation use high quality solar film ie BAADER Solar film or Solar filter along with this filter.