Astronomik Deep Sky RGB Filter

Yes, the Deep Sky RGB set is designed to be parfocal. This means you won't need to refocus your telescope when switching between the red, green, and blue filters during your imaging sequence.

Absolutely. While originally optimized for CCD sensors, these filters perform exceptionally well with modern CMOS cameras, providing high photon counts and excellent color separation.

These filters are optimized for telescopes with focal ratios of f/6 or faster. Their MFR coating technique ensures high performance and minimal internal reflections even when used with these faster optical systems.

The filters feature extremely tough, scratch-resistant coatings. They are built to withstand regular handling and cleaning, and they are backed by a 10-year warranty from Astronomik.

These are standard RGB filters designed for color balance and contrast, not specifically for light pollution suppression. If you are imaging from a bright location, you may want to pair these with a dedicated light pollution or narrowband filter.

The 36mm round size is a standard format for many filter wheels. Please ensure your filter wheel or drawer is compatible with 36mm unmounted round filters before purchasing.