Baader Planetarium SLOAN/SDSS Photometric Filter

Parfocal design means that all filters in the set have the same optical thickness. This allows you to switch between different filters without needing to refocus your telescope, saving significant time during long observation sessions.

Yes, they are fully compatible with both. While they are specifically optimized for the high sensitivity and spectral response of modern CMOS sensors, they perform equally well with traditional CCD cameras.

These coatings are specifically engineered to minimize halos around bright stars. By reducing internal reflections, they provide cleaner, higher-contrast data, which is essential for accurate photometric measurements.

No, these filters use Baader's Life-Coat technology. This hard-coating process is designed for extreme durability, ensuring the filters remain resistant to environmental wear and tear over the long term.

The blackened edges serve a crucial purpose: they absorb stray light that might otherwise bounce around inside the filter cell. This prevents internal reflections and light leakage, ensuring that only the light passing through the filter reaches your sensor.

Yes, the SLOAN/SDSS (ugriz') standard is widely used in professional astronomy. These filters are manufactured to strict tolerances, making them a reliable choice for serious photometric surveys and data-driven observation.