ZWO 2″ IR-cut filter is suitable for colour cameras 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 filter will do just that.
The ZWO IR-Cut filter is housed in a 2″ cell, and has internal threads so that you can stack filters together. The filter comes with a protective plastic case.
Technical Parameter:
- Name: IR-cut filter
- Size: 2″
- Thickness: 5mm+2mm(Thread)
- Thread: M48*0.75 male thread
Paul Milvain –
Recently I bought the 2″ ZWO IR cut filter from Sidereal Trading to use in my imaging system (A Skywatcher Evostar 72mm telescope with focal reducer and a ZWO ASI294MC Pro one shot colour camera) I highly recommend a filter such as this for anyone imaging with a similar setup as it makes a huge difference to image quality. It greatly reduced issues with reflections in the imaging train, significantly reduced the star size and allowed much easier colour management. A cheap investment for such a large improvement in image quality.