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:

Venus-U filter makes it possible to obtain photographs, CCD or video images in the UV-A (320-400nm) and observe Venus’ cloud structures.

APPLICATION:

• Use with monochrome CCD cameras and you need to remove the cover glass of sensor and internal UV-IR blocker in order to pass UV light. The same holds true for mono DSLRs that its built-in low pass filter needs to be removed. What’s more, you need a special UV lens together with camera body. The sensor of CCD or CMOS cameras is capable of detecting light in the 350-1100nm range.
• Act as an outstanding dust shield, which prevents the possibility of dust settling on the lens during long time exposure.
• Ultraviolet photography finds practical use in medicine, dermatology, botany, criminology and theatrical applications.

Size

Standard 1.25” & 2”

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.