20nm atmospheric filter 1.25 "
The ZWO atmosphere (CH4) filter is a special filter for photographic use. Its FWHM is 20nm, which is suitable for most IR-sensitive cameras or monochrome cameras. It can show the details of the target, and not too dark. Recommended for shooting planets such as Jupiter, Saturn and other planets. The filter size is 1.25 "(31.7mm), the frame with internal thread. With plastic protection box.