ZWO Filters IR pass filter 1.25 inches

ZWO IR Pass Filter 1.25 inch: Sharper Planetary Details Through Infrared

This IR pass filter does the opposite of a block filter: it blocks all visible light and allows only infrared light with wavelengths above 850 nm to pass through. Because infrared light is much less affected by atmospheric turbulence, images of the Moon and planets are noticeably smoother and sharper, especially in moderate seeing conditions or when a planet is low in the sky.

It’s useful to know: in many color cameras, the Bayer color layer above 850 nm is virtually transparent. With this filter, you can effectively use a color camera as a full-resolution monochrome camera. To do this, set the white balance (WB_R and WB_B) to 50.

What you capture with it

• Sharper images of Mars, Jupiter, Saturn, and the Moon
• Planet detail in poor seeing or low altitude
• Shooting in twilight: infrared makes the background sky darker

Compatibility

Fits all 1.25-inch focusers and filter wheels. Only suitable for cameras that are sensitive to infrared, such as the ASI174MM, ASI462MM, and ASI585MM. Not suitable for visual observation.

Specifications

A specialized planetary filter from the filter series of ZWO. Combine with a fast planetary camera for the sharpest results.