Astronomik Deep Sky RGB Filter

Parfocal means that all filters in the set have the same optical thickness. You won't need to refocus your telescope when switching between the Red, Green, and Blue filters, which saves significant time during your imaging sessions.

These filters are designed to work seamlessly with both CMOS and CCD sensors. They are optimized to balance color reproduction across most modern sensors, ensuring you get accurate, vibrant results regardless of your camera type.

The advanced MFR coating technology is specifically engineered to eliminate halos and internal reflections. This allows you to capture bright stars without the distracting artifacts that often plague lower-quality filter sets.

Yes, they are built to be highly resistant to humidity and environmental aging. The high-quality optical glass and robust coating process ensure consistent performance even if your equipment is exposed to the elements over long periods.

No, you don't. These filters are designed to block both IR and UV light effectively. This ensures that your images remain sharp and clear, preventing the bloated star images often caused by light outside the visible spectrum.

These are 2-inch filters with a standard M48 x 0.75 thread. They are compatible with most standard filter wheels and drawers that accept 2-inch mounted filters.