ZWO UV/IR cut Filter 2"

ZWO 2″ IR UV CUT filter is suitable for color camera with AR protect window.

The ZWO IR-Cut Filter blocks infrared light from reaching the sensor of your CCD or CMOS camera or your expensive H-alpha filter. When imaging, the addition of this simple and inexpensive accessory will result in sharper images, and when doing solar work, the IR Cut Filter will your protect H-alpha filter from the damaging effects of infrared radiation.

Infrared or IR light is invisible to the human eye, and so even though most telescopes are not designed to focus IR light, it does not matter when you are using your telescope visually. However, when you add a camera to the mix, its a whole other story! Unlike the human eye, a silicon sensor is very sensitive to light in the infrared portion of the spectrum, and that is a problem because infrared images are blurry as all get out. That means your nice, sharp visual light image is degraded by the addition of the infrared layer. This problem can easily be solved by blocking the infrared, and the ZWO IR Cut-Off, will do just that.

The ZWO IR-Cut filter is housed in a 2” cell. The filter comes with a protective plastic case.

Thickness: 2 mm

The UV/IR cut filter is recommended in many cases:
- at least one lens is used in the light path which is not corrected to infrared light (most of the lenses are optimized for visible light)
- when taking images without an IR blocking filter in the camera
- when the Sun is still above the horizon or close to it (dawn/dusk lasts more in IR light)
- if there's a strong IR light source next to the target object

The UV/IR cut filter is recommended in many cases:
- at least one lens is used in the light path which is not corrected to infrared light (most of the lenses are optimized for visible light)
- when taking images without an IR blocking filter in the camera
- when the Sun is still above the horizon or close to it (dawn/dusk lasts more in IR light)
- if there's a strong IR light source next to the target object

GSO's filter is affordably priced and provides 90% transmission.

Baader's filters have a transmission of 97% between 420 and 680nm.

Astronomik's IR blocking filter are similar to Baaders but filter for Canon EOS APS-C cameras are also available.