Astronomik Deep-Sky RGB Filter

LRGB stands for Luminance, Red, Green, and Blue. This set allows you to capture a high-resolution monochrome luminance channel for detail, while using the RGB filters to add accurate color information, which is the standard method for producing high-quality color deep-sky images.

These filters are designed for standard 1.25-inch filter wheels or filter drawers. Before purchasing, verify that your camera's sensor size is small enough to avoid vignetting, as 1.25-inch filters can sometimes restrict the field of view on larger full-frame sensors.

While these are primarily color-separation filters, they are engineered to isolate specific wavelengths of light. This helps improve the signal-to-noise ratio and contrast of faint objects, though they are not a substitute for dedicated narrowband filters if you are shooting from extremely light-polluted urban areas.

Because these filters are designed with a standardized color balance, your post-processing should be more straightforward. You will likely find that your color calibration steps require less manual adjustment compared to using unoptimized or mismatched filter sets.

Yes, Astronomik designs these filters to be parfocal, meaning you should not need to refocus your telescope when switching between the L, R, G, and B filters during your imaging sequence.