The ZWO 2″ RGB Filter Kit includes four filters, luminance, red, green and blue. Each filter is mounted to a screw thread and are recommended for the suitable ZWO full frame camera system.
Key features:
High quality optically polished to ensure accurate 1/4 wavefront
more than 92% transmission at passband
Infrared wavelength 700nm – 1100nm cut-off
Precision off-band blocking
Multilayered anti reflection coating
Small spectral gap to minimize effect of light pollution
The filter set is a set of 4 filters which are 7.5 mm thick, mounted to a metal round thread. Designed for full frame ZWO cameras system and comes with individual protective plastic cases.
LRGB stands for Luminance, Red, Green, and Blue. These filters will allow you to capture a full color image with a monochrome camera.
Luminance Filter – UV-IR and Luminance filters are important for digital astrophotography as blurred or bloated images of stars might be encountered when allowing transmission in the UV and IR portions of the spectrum. Removing this unwanted light will improve sharpness and star image quality.
Parfocal – is a lens that stays in focus when magnification/focal length is changed removing the need to refocus when the filters are interchanged.